v6.8

* Update lyrics code

* Refactor DownloadFile to use default HTTP client

.github/workflows/build.yml

@@ -243,10 +243,21 @@ jobs:
         run: |
           upx --best --lzma build/bin/SpotiFLAC
 
+      - name: Cache appimagetool
+        id: cache-appimagetool
+        uses: actions/cache@v4
+        with:
+          path: appimagetool
+          key: appimagetool-x86_64-v1
+
       - name: Download appimagetool
+        if: steps.cache-appimagetool.outputs.cache-hit != 'true'
         run: |
-          wget -O appimagetool https://github.com/AppImage/AppImageKit/releases/download/continuous/appimagetool-x86_64.AppImage
-          chmod +x appimagetool
+          wget --timeout=30 --tries=5 --retry-connrefused --waitretry=5 -O appimagetool https://github.com/AppImage/AppImageKit/releases/download/continuous/appimagetool-x86_64.AppImage || \
+          wget --timeout=30 --tries=5 --retry-connrefused --waitretry=5 -O appimagetool https://github.com/AppImage/AppImageKit/releases/download/13/appimagetool-x86_64.AppImage
+
+      - name: Make appimagetool executable
+        run: chmod +x appimagetool
 
       - name: Create AppImage
         run: |

.gitignore

@@ -56,6 +56,9 @@ temp/
 *.bak
 *.old
 
+# Test files
+test
+
 # Build notes (optional - uncomment if you don't want to commit)
 # BUILD_NOTES.md
 build.txt

README.md

@@ -4,7 +4,7 @@
 
 <div align="center">
 
-Get Spotify tracks in true FLAC from Tidal, Deezer, Qobuz & Amazon Music — no account required.
+Get Spotify tracks in true FLAC from Tidal, Qobuz & Amazon Music — no account required.
 
 ![Windows](https://img.shields.io/badge/Windows-10%2B-0078D6?style=for-the-badge&logo=data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI1MTIiIGhlaWdodD0iNTEyIiB2aWV3Qm94PSIwIDAgMjAgMjAiPjxwYXRoIGZpbGw9IiNmZmZmZmYiIGZpbGwtcnVsZT0iZXZlbm9kZCIgZD0iTTIwIDEwLjg3M1YyMEw4LjQ3OSAxOC41MzdsLjAwMS03LjY2NEgyMFptLTEzLjEyIDBsLS4wMDEgNy40NjFMMCAxNy40NjF2LTYuNTg4aDYuODhaTTIwIDkuMjczSDguNDhsLS4wMDEtNy44MUwyMCAwdjkuMjczWk02Ljg3OSAxLjY2NmwuMDAxIDcuNjA3SDBWMi41MzlsNi44NzktLjg3M1oiLz48L3N2Zz4=)
 ![macOS](https://img.shields.io/badge/macOS-10.13%2B-000000?style=for-the-badge&logo=apple&logoColor=white)
@@ -16,7 +16,7 @@ Get Spotify tracks in true FLAC from Tidal, Deezer, Qobuz & Amazon Music — no
 
 ## Screenshot
 
-![Image](https://github.com/user-attachments/assets/4da39b61-dcf8-4018-83e4-b8750a671245)
+![Image](https://github.com/user-attachments/assets/ee352566-7e6d-4d6f-9add-d6b55a0187fa)
 
 ## Lossless Audio Checker
 

app.go

@@ -43,6 +43,9 @@ type DownloadRequest struct {
 	TrackName            string `json:"track_name,omitempty"`
 	ArtistName           string `json:"artist_name,omitempty"`
 	AlbumName            string `json:"album_name,omitempty"`
+	AlbumArtist          string `json:"album_artist,omitempty"`
+	ReleaseDate          string `json:"release_date,omitempty"`
+	CoverURL             string `json:"cover_url,omitempty"` // Spotify cover URL for embedding
 	ApiURL               string `json:"api_url,omitempty"`
 	OutputDir            string `json:"output_dir,omitempty"`
 	AudioFormat          string `json:"audio_format,omitempty"`
@@ -51,9 +54,14 @@ type DownloadRequest struct {
 	Position             int    `json:"position,omitempty"`                // Position in playlist/album (1-based)
 	UseAlbumTrackNumber  bool   `json:"use_album_track_number,omitempty"`  // Use album track number instead of playlist position
 	SpotifyID            string `json:"spotify_id,omitempty"`              // Spotify track ID
+	EmbedLyrics          bool   `json:"embed_lyrics,omitempty"`            // Whether to embed lyrics into the audio file
+	EmbedMaxQualityCover bool   `json:"embed_max_quality_cover,omitempty"` // Whether to embed max quality cover art
 	ServiceURL           string `json:"service_url,omitempty"`             // Direct service URL (Tidal/Deezer/Amazon) to skip song.link API call
 	Duration             int    `json:"duration,omitempty"`                // Track duration in seconds for better matching
 	ItemID               string `json:"item_id,omitempty"`                 // Optional queue item ID for multi-service fallback tracking
+	SpotifyTrackNumber   int    `json:"spotify_track_number,omitempty"`    // Track number from Spotify album
+	SpotifyDiscNumber    int    `json:"spotify_disc_number,omitempty"`     // Disc number from Spotify album
+	SpotifyTotalTracks   int    `json:"spotify_total_tracks,omitempty"`    // Total tracks in album from Spotify
 }
 
 // DownloadResponse represents the response structure for download operations
@@ -126,11 +134,14 @@ func (a *App) DownloadTrack(req DownloadRequest) (DownloadResponse, error) {
 	}
 
 	if req.Service == "" {
-		req.Service = "deezer"
+		req.Service = "tidal"
 	}
 
 	if req.OutputDir == "" {
 		req.OutputDir = "."
+	} else {
+		// Sanitize output directory path to remove invalid characters
+		req.OutputDir = backend.SanitizeFolderPath(req.OutputDir)
 	}
 
 	if req.AudioFormat == "" {
@@ -204,7 +215,7 @@ func (a *App) DownloadTrack(req DownloadRequest) (DownloadResponse, error) {
 		downloader := backend.NewAmazonDownloader()
 		if req.ServiceURL != "" {
 			// Use provided URL directly
-			filename, err = downloader.DownloadByURL(req.ServiceURL, req.OutputDir, req.FilenameFormat, req.TrackNumber, req.Position, req.TrackName, req.ArtistName, req.AlbumName, req.UseAlbumTrackNumber)
+			filename, err = downloader.DownloadByURL(req.ServiceURL, req.OutputDir, req.FilenameFormat, req.TrackNumber, req.Position, req.TrackName, req.ArtistName, req.AlbumName, req.AlbumArtist, req.ReleaseDate, req.CoverURL, req.ISRC, req.SpotifyTrackNumber, req.SpotifyDiscNumber, req.SpotifyTotalTracks, req.EmbedMaxQualityCover)
 		} else {
 			if req.SpotifyID == "" {
 				return DownloadResponse{
@@ -212,7 +223,7 @@ func (a *App) DownloadTrack(req DownloadRequest) (DownloadResponse, error) {
 					Error:   "Spotify ID is required for Amazon Music",
 				}, fmt.Errorf("spotify ID is required for Amazon Music")
 			}
-			filename, err = downloader.DownloadBySpotifyID(req.SpotifyID, req.OutputDir, req.FilenameFormat, req.TrackNumber, req.Position, req.TrackName, req.ArtistName, req.AlbumName, req.UseAlbumTrackNumber)
+			filename, err = downloader.DownloadBySpotifyID(req.SpotifyID, req.OutputDir, req.FilenameFormat, req.TrackNumber, req.Position, req.TrackName, req.ArtistName, req.AlbumName, req.AlbumArtist, req.ReleaseDate, req.CoverURL, req.ISRC, req.SpotifyTrackNumber, req.SpotifyDiscNumber, req.SpotifyTotalTracks, req.EmbedMaxQualityCover)
 		}
 
 	case "tidal":
@@ -220,7 +231,7 @@ func (a *App) DownloadTrack(req DownloadRequest) (DownloadResponse, error) {
 			downloader := backend.NewTidalDownloader("")
 			if req.ServiceURL != "" {
 				// Use provided URL directly with fallback to multiple APIs
-				filename, err = downloader.DownloadByURLWithFallback(req.ServiceURL, req.OutputDir, req.AudioFormat, req.FilenameFormat, req.TrackNumber, req.Position, req.TrackName, req.ArtistName, req.AlbumName, req.UseAlbumTrackNumber)
+				filename, err = downloader.DownloadByURLWithFallback(req.ServiceURL, req.OutputDir, req.AudioFormat, req.FilenameFormat, req.TrackNumber, req.Position, req.TrackName, req.ArtistName, req.AlbumName, req.AlbumArtist, req.ReleaseDate, req.UseAlbumTrackNumber, req.CoverURL, req.EmbedMaxQualityCover, req.SpotifyTrackNumber, req.SpotifyDiscNumber, req.SpotifyTotalTracks, req.ISRC)
 			} else {
 				if req.SpotifyID == "" {
 					return DownloadResponse{
@@ -229,13 +240,13 @@ func (a *App) DownloadTrack(req DownloadRequest) (DownloadResponse, error) {
 					}, fmt.Errorf("spotify ID is required for Tidal")
 				}
 				// Use ISRC matching for search fallback
-				filename, err = downloader.DownloadWithFallbackAndISRC(req.SpotifyID, req.ISRC, req.OutputDir, req.AudioFormat, req.FilenameFormat, req.TrackNumber, req.Position, req.TrackName, req.ArtistName, req.AlbumName, req.UseAlbumTrackNumber, req.Duration)
+				filename, err = downloader.DownloadWithFallbackAndISRC(req.SpotifyID, req.ISRC, req.OutputDir, req.AudioFormat, req.FilenameFormat, req.TrackNumber, req.Position, req.TrackName, req.ArtistName, req.AlbumName, req.AlbumArtist, req.ReleaseDate, req.UseAlbumTrackNumber, req.Duration, req.CoverURL, req.EmbedMaxQualityCover, req.SpotifyTrackNumber, req.SpotifyDiscNumber, req.SpotifyTotalTracks)
 			}
 		} else {
 			downloader := backend.NewTidalDownloader(req.ApiURL)
 			if req.ServiceURL != "" {
 				// Use provided URL directly with specific API
-				filename, err = downloader.DownloadByURL(req.ServiceURL, req.OutputDir, req.AudioFormat, req.FilenameFormat, req.TrackNumber, req.Position, req.TrackName, req.ArtistName, req.AlbumName, req.UseAlbumTrackNumber)
+				filename, err = downloader.DownloadByURL(req.ServiceURL, req.OutputDir, req.AudioFormat, req.FilenameFormat, req.TrackNumber, req.Position, req.TrackName, req.ArtistName, req.AlbumName, req.AlbumArtist, req.ReleaseDate, req.UseAlbumTrackNumber, req.CoverURL, req.EmbedMaxQualityCover, req.SpotifyTrackNumber, req.SpotifyDiscNumber, req.SpotifyTotalTracks, req.ISRC)
 			} else {
 				if req.SpotifyID == "" {
 					return DownloadResponse{
@@ -244,28 +255,24 @@ func (a *App) DownloadTrack(req DownloadRequest) (DownloadResponse, error) {
 					}, fmt.Errorf("spotify ID is required for Tidal")
 				}
 				// Use ISRC matching for search fallback
-				filename, err = downloader.DownloadWithISRC(req.SpotifyID, req.ISRC, req.OutputDir, req.AudioFormat, req.FilenameFormat, req.TrackNumber, req.Position, req.TrackName, req.ArtistName, req.AlbumName, req.UseAlbumTrackNumber, req.Duration)
+				filename, err = downloader.DownloadWithISRC(req.SpotifyID, req.ISRC, req.OutputDir, req.AudioFormat, req.FilenameFormat, req.TrackNumber, req.Position, req.TrackName, req.ArtistName, req.AlbumName, req.AlbumArtist, req.ReleaseDate, req.UseAlbumTrackNumber, req.Duration, req.CoverURL, req.EmbedMaxQualityCover, req.SpotifyTrackNumber, req.SpotifyDiscNumber, req.SpotifyTotalTracks)
 			}
 		}
 
 	case "qobuz":
 		downloader := backend.NewQobuzDownloader()
-		filename, err = downloader.DownloadByISRC(req.ISRC, req.OutputDir, req.AudioFormat, req.FilenameFormat, req.TrackNumber, req.Position, req.TrackName, req.ArtistName, req.AlbumName, req.UseAlbumTrackNumber)
+		// Default to "6" (FLAC 16-bit) for Qobuz if not specified
+		quality := req.AudioFormat
+		if quality == "" {
+			quality = "6"
+		}
+		filename, err = downloader.DownloadByISRC(req.ISRC, req.OutputDir, quality, req.FilenameFormat, req.TrackNumber, req.Position, req.TrackName, req.ArtistName, req.AlbumName, req.AlbumArtist, req.ReleaseDate, req.UseAlbumTrackNumber, req.CoverURL, req.EmbedMaxQualityCover, req.SpotifyTrackNumber, req.SpotifyDiscNumber, req.SpotifyTotalTracks)
 
-	default: // deezer
-		downloader := backend.NewDeezerDownloader()
-		if req.ServiceURL != "" {
-			// Use provided URL directly
-			filename, err = downloader.DownloadByURL(req.ServiceURL, req.OutputDir, req.FilenameFormat, req.TrackNumber, req.Position, req.TrackName, req.ArtistName, req.AlbumName, req.UseAlbumTrackNumber)
-		} else {
-			if req.SpotifyID == "" {
+	default:
 		return DownloadResponse{
 			Success: false,
-					Error:   "Spotify ID is required for Deezer",
-				}, fmt.Errorf("spotify ID is required for Deezer")
-			}
-			filename, err = downloader.DownloadBySpotifyID(req.SpotifyID, req.OutputDir, req.FilenameFormat, req.TrackNumber, req.Position, req.TrackName, req.ArtistName, req.AlbumName, req.UseAlbumTrackNumber)
-		}
+			Error:   fmt.Sprintf("Unknown service: %s", req.Service),
+		}, fmt.Errorf("unknown service: %s", req.Service)
 	}
 
 	if err != nil {
@@ -296,6 +303,58 @@ func (a *App) DownloadTrack(req DownloadRequest) (DownloadResponse, error) {
 		filename = strings.TrimPrefix(filename, "EXISTS:")
 	}
 
+	// Embed lyrics after successful download (only for new downloads with Spotify ID and if embedLyrics is enabled)
+	if !alreadyExists && req.SpotifyID != "" && req.EmbedLyrics && strings.HasSuffix(filename, ".flac") {
+		go func(filePath, spotifyID, trackName, artistName string) {
+			fmt.Printf("\n========== LYRICS FETCH START ==========\n")
+			fmt.Printf("Spotify ID: %s\n", spotifyID)
+			fmt.Printf("Track: %s\n", trackName)
+			fmt.Printf("Artist: %s\n", artistName)
+			fmt.Println("Searching all sources...")
+
+			lyricsClient := backend.NewLyricsClient()
+
+			// Try all sources with fallbacks
+			lyricsResp, source, err := lyricsClient.FetchLyricsAllSources(spotifyID, trackName, artistName)
+			if err != nil {
+				fmt.Printf("All sources failed: %v\n", err)
+				fmt.Printf("========== LYRICS FETCH END (FAILED) ==========\n\n")
+				return
+			}
+
+			if lyricsResp == nil || len(lyricsResp.Lines) == 0 {
+				fmt.Println("No lyrics content found")
+				fmt.Printf("========== LYRICS FETCH END (FAILED) ==========\n\n")
+				return
+			}
+
+			fmt.Printf("Lyrics found from: %s\n", source)
+			fmt.Printf("Sync type: %s\n", lyricsResp.SyncType)
+			fmt.Printf("Total lines: %d\n", len(lyricsResp.Lines))
+
+			lyrics := lyricsClient.ConvertToLRC(lyricsResp, trackName, artistName)
+			if lyrics == "" {
+				fmt.Println("No lyrics content to embed")
+				fmt.Printf("========== LYRICS FETCH END (FAILED) ==========\n\n")
+				return
+			}
+
+			// Show full lyrics in console for debugging
+			fmt.Printf("\n--- Full LRC Content ---\n")
+			fmt.Println(lyrics)
+			fmt.Printf("--- End LRC Content ---\n\n")
+
+			fmt.Printf("Embedding into: %s\n", filePath)
+			if err := backend.EmbedLyricsOnly(filePath, lyrics); err != nil {
+				fmt.Printf("Failed to embed lyrics: %v\n", err)
+				fmt.Printf("========== LYRICS FETCH END (FAILED) ==========\n\n")
+			} else {
+				fmt.Printf("Lyrics embedded successfully!\n")
+				fmt.Printf("========== LYRICS FETCH END (SUCCESS) ==========\n\n")
+			}
+		}(filename, req.SpotifyID, req.TrackName, req.ArtistName)
+	}
+
 	message := "Download completed successfully"
 	if alreadyExists {
 		message = "File already exists"
@@ -543,3 +602,82 @@ func (a *App) CheckTrackAvailability(spotifyTrackID string, isrc string) (string
 
 	return string(jsonData), nil
 }
+
+// IsFFmpegInstalled checks if ffmpeg is installed
+func (a *App) IsFFmpegInstalled() (bool, error) {
+	return backend.IsFFmpegInstalled()
+}
+
+// GetFFmpegPath returns the path to ffmpeg
+func (a *App) GetFFmpegPath() (string, error) {
+	return backend.GetFFmpegPath()
+}
+
+// DownloadFFmpegRequest represents a request to download ffmpeg
+type DownloadFFmpegRequest struct{}
+
+// DownloadFFmpegResponse represents the response from downloading ffmpeg
+type DownloadFFmpegResponse struct {
+	Success bool   `json:"success"`
+	Message string `json:"message"`
+	Error   string `json:"error,omitempty"`
+}
+
+// DownloadFFmpeg downloads and installs ffmpeg
+func (a *App) DownloadFFmpeg() DownloadFFmpegResponse {
+	err := backend.DownloadFFmpeg(func(progress int) {
+		fmt.Printf("[FFmpeg] Download progress: %d%%\n", progress)
+	})
+	if err != nil {
+		return DownloadFFmpegResponse{
+			Success: false,
+			Error:   err.Error(),
+		}
+	}
+
+	return DownloadFFmpegResponse{
+		Success: true,
+		Message: "FFmpeg installed successfully",
+	}
+}
+
+// InstallFFmpegFromFile installs ffmpeg from a local file path
+func (a *App) InstallFFmpegFromFile(filePath string) DownloadFFmpegResponse {
+	err := backend.InstallFFmpegFromFile(filePath)
+	if err != nil {
+		return DownloadFFmpegResponse{
+			Success: false,
+			Error:   err.Error(),
+		}
+	}
+	return DownloadFFmpegResponse{
+		Success: true,
+		Message: "FFmpeg installed successfully from file",
+	}
+}
+
+// ConvertAudioRequest represents a request to convert audio files
+type ConvertAudioRequest struct {
+	InputFiles   []string `json:"input_files"`
+	OutputFormat string   `json:"output_format"`
+	Bitrate      string   `json:"bitrate"`
+}
+
+// ConvertAudio converts audio files using ffmpeg
+func (a *App) ConvertAudio(req ConvertAudioRequest) ([]backend.ConvertAudioResult, error) {
+	backendReq := backend.ConvertAudioRequest{
+		InputFiles:   req.InputFiles,
+		OutputFormat: req.OutputFormat,
+		Bitrate:      req.Bitrate,
+	}
+	return backend.ConvertAudio(backendReq)
+}
+
+// SelectAudioFiles opens a file dialog to select audio files for conversion
+func (a *App) SelectAudioFiles() ([]string, error) {
+	files, err := backend.SelectMultipleFiles(a.ctx)
+	if err != nil {
+		return nil, err
+	}
+	return files, nil
+}

backend/amazon.go

@@ -10,6 +10,7 @@ import (
 	"net/url"
 	"os"
 	"path/filepath"
+	"regexp"
 	"strings"
 	"time"
 )
@@ -141,9 +142,24 @@ func (a *AmazonDownloader) GetAmazonURLFromSpotify(spotifyTrackID string) (strin
 	}
 	defer resp.Body.Close()
 
+	// Read body first to handle encoding issues and provide better error messages
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return "", fmt.Errorf("failed to read response body: %w", err)
+	}
+
+	if len(body) == 0 {
+		return "", fmt.Errorf("API returned empty response")
+	}
+
 	var songLinkResp SongLinkResponse
-	if err := json.NewDecoder(resp.Body).Decode(&songLinkResp); err != nil {
-		return "", fmt.Errorf("failed to decode response: %w", err)
+	if err := json.Unmarshal(body, &songLinkResp); err != nil {
+		// Truncate body for error message (max 200 chars)
+		bodyStr := string(body)
+		if len(bodyStr) > 200 {
+			bodyStr = bodyStr[:200] + "..."
+		}
+		return "", fmt.Errorf("failed to decode response: %w (response: %s)", err, bodyStr)
 	}
 
 	amazonLink, ok := songLinkResp.LinksByPlatform["amazonMusic"]
@@ -356,7 +372,7 @@ func (a *AmazonDownloader) DownloadFromService(amazonURL, outputDir string) (str
 	return "", fmt.Errorf("all regions failed. Last error: %v", lastError)
 }
 
-func (a *AmazonDownloader) DownloadByURL(amazonURL, outputDir, filenameFormat string, includeTrackNumber bool, position int, spotifyTrackName, spotifyArtistName, spotifyAlbumName string, useAlbumTrackNumber bool) (string, error) {
+func (a *AmazonDownloader) DownloadByURL(amazonURL, outputDir, filenameFormat string, includeTrackNumber bool, position int, spotifyTrackName, spotifyArtistName, spotifyAlbumName, spotifyAlbumArtist, spotifyReleaseDate, spotifyCoverURL, spotifyISRC string, spotifyTrackNumber, spotifyDiscNumber, spotifyTotalTracks int, embedMaxQualityCover bool) (string, error) {
 	// Create output directory if needed
 	if outputDir != "." {
 		if err := os.MkdirAll(outputDir, 0755); err != nil {
@@ -366,7 +382,7 @@ func (a *AmazonDownloader) DownloadByURL(amazonURL, outputDir, filenameFormat st
 
 	// Check if file with expected name already exists (Amazon doesn't provide ISRC before download)
 	if spotifyTrackName != "" && spotifyArtistName != "" {
-		expectedFilename := BuildExpectedFilename(spotifyTrackName, spotifyArtistName, filenameFormat, includeTrackNumber, position, useAlbumTrackNumber)
+		expectedFilename := BuildExpectedFilename(spotifyTrackName, spotifyArtistName, filenameFormat, includeTrackNumber, position, false)
 		expectedPath := filepath.Join(outputDir, expectedFilename)
 
 		if fileInfo, err := os.Stat(expectedPath); err == nil && fileInfo.Size() > 0 {
@@ -383,13 +399,31 @@ func (a *AmazonDownloader) DownloadByURL(amazonURL, outputDir, filenameFormat st
 		return "", err
 	}
 
-	// File already has embedded metadata, just rename if needed
+	// Rename file based on Spotify metadata
 	if spotifyTrackName != "" && spotifyArtistName != "" {
 		safeArtist := sanitizeFilename(spotifyArtistName)
 		safeTitle := sanitizeFilename(spotifyTrackName)
 
 		// Build filename based on format settings
 		var newFilename string
+
+		// Check if format is a template (contains {})
+		if strings.Contains(filenameFormat, "{") {
+			newFilename = filenameFormat
+			newFilename = strings.ReplaceAll(newFilename, "{title}", safeTitle)
+			newFilename = strings.ReplaceAll(newFilename, "{artist}", safeArtist)
+
+			// Handle track number - if position is 0, remove {track} and surrounding separators
+			if position > 0 {
+				newFilename = strings.ReplaceAll(newFilename, "{track}", fmt.Sprintf("%02d", position))
+			} else {
+				// Remove {track} with common separators
+				newFilename = regexp.MustCompile(`\{track\}\.\s*`).ReplaceAllString(newFilename, "")
+				newFilename = regexp.MustCompile(`\{track\}\s*-\s*`).ReplaceAllString(newFilename, "")
+				newFilename = regexp.MustCompile(`\{track\}\s*`).ReplaceAllString(newFilename, "")
+			}
+		} else {
+			// Legacy format support
 			switch filenameFormat {
 			case "artist-title":
 				newFilename = fmt.Sprintf("%s - %s", safeArtist, safeTitle)
@@ -399,10 +433,11 @@ func (a *AmazonDownloader) DownloadByURL(amazonURL, outputDir, filenameFormat st
 				newFilename = fmt.Sprintf("%s - %s", safeTitle, safeArtist)
 			}
 
-		// Add track number prefix if enabled
+			// Add track number prefix if enabled (legacy behavior)
 			if includeTrackNumber && position > 0 {
 				newFilename = fmt.Sprintf("%02d. %s", position, newFilename)
 			}
+		}
 
 		newFilename = newFilename + ".flac"
 		newFilePath := filepath.Join(outputDir, newFilename)
@@ -416,17 +451,64 @@ func (a *AmazonDownloader) DownloadByURL(amazonURL, outputDir, filenameFormat st
 		}
 	}
 
+	// Embed Spotify metadata (replace Amazon's embedded metadata)
+	fmt.Println("Embedding Spotify metadata...")
+
+	coverPath := ""
+	// Download Spotify cover (with max resolution if enabled)
+	if spotifyCoverURL != "" {
+		coverPath = filePath + ".cover.jpg"
+		coverClient := NewCoverClient()
+		if err := coverClient.DownloadCoverToPath(spotifyCoverURL, coverPath, embedMaxQualityCover); err != nil {
+			fmt.Printf("Warning: Failed to download Spotify cover: %v\n", err)
+			coverPath = ""
+		} else {
+			defer os.Remove(coverPath)
+			fmt.Println("Spotify cover downloaded")
+		}
+	}
+
+	// Determine track number to embed
+	// Use Spotify track number (album track number) if available, otherwise use position
+	trackNumberToEmbed := spotifyTrackNumber
+	if trackNumberToEmbed == 0 {
+		trackNumberToEmbed = position // Fallback to playlist position
+	}
+	if trackNumberToEmbed == 0 {
+		trackNumberToEmbed = 1 // Default to track 1 for single track downloads without track number
+	}
+
+	// Build metadata from Spotify
+	metadata := Metadata{
+		Title:       spotifyTrackName,
+		Artist:      spotifyArtistName,
+		Album:       spotifyAlbumName,
+		AlbumArtist: spotifyAlbumArtist,
+		Date:        spotifyReleaseDate, // Recorded date (full date YYYY-MM-DD)
+		TrackNumber: trackNumberToEmbed,
+		TotalTracks: spotifyTotalTracks, // Total tracks in album from Spotify
+		DiscNumber:  spotifyDiscNumber,  // Disc number from Spotify
+		ISRC:        spotifyISRC,        // Use ISRC from Spotify
+		Description: "https://github.com/afkarxyz/SpotiFLAC",
+	}
+
+	if err := EmbedMetadata(filePath, metadata, coverPath); err != nil {
+		fmt.Printf("Warning: Failed to embed metadata: %v\n", err)
+	} else {
+		fmt.Println("Metadata embedded successfully")
+	}
+
 	fmt.Println("Done")
 	fmt.Println("✓ Downloaded successfully from Amazon Music")
 	return filePath, nil
 }
 
-func (a *AmazonDownloader) DownloadBySpotifyID(spotifyTrackID, outputDir, filenameFormat string, includeTrackNumber bool, position int, spotifyTrackName, spotifyArtistName, spotifyAlbumName string, useAlbumTrackNumber bool) (string, error) {
+func (a *AmazonDownloader) DownloadBySpotifyID(spotifyTrackID, outputDir, filenameFormat string, includeTrackNumber bool, position int, spotifyTrackName, spotifyArtistName, spotifyAlbumName, spotifyAlbumArtist, spotifyReleaseDate, spotifyCoverURL, spotifyISRC string, spotifyTrackNumber, spotifyDiscNumber, spotifyTotalTracks int, embedMaxQualityCover bool) (string, error) {
 	// Get Amazon URL from Spotify track ID
 	amazonURL, err := a.GetAmazonURLFromSpotify(spotifyTrackID)
 	if err != nil {
 		return "", err
 	}
 
-	return a.DownloadByURL(amazonURL, outputDir, filenameFormat, includeTrackNumber, position, spotifyTrackName, spotifyArtistName, spotifyAlbumName, useAlbumTrackNumber)
+	return a.DownloadByURL(amazonURL, outputDir, filenameFormat, includeTrackNumber, position, spotifyTrackName, spotifyArtistName, spotifyAlbumName, spotifyAlbumArtist, spotifyReleaseDate, spotifyCoverURL, spotifyISRC, spotifyTrackNumber, spotifyDiscNumber, spotifyTotalTracks, embedMaxQualityCover)
 }

backend/cover.go

@@ -6,6 +6,7 @@ import (
 	"net/http"
 	"os"
 	"path/filepath"
+	"regexp"
 	"strings"
 	"time"
 )
@@ -55,7 +56,23 @@ func buildCoverFilename(trackName, artistName, filenameFormat string, includeTra
 
 	var filename string
 
-	// Build base filename based on format
+	// Check if format is a template (contains {})
+	if strings.Contains(filenameFormat, "{") {
+		filename = filenameFormat
+		filename = strings.ReplaceAll(filename, "{title}", safeTitle)
+		filename = strings.ReplaceAll(filename, "{artist}", safeArtist)
+
+		// Handle track number - if position is 0, remove {track} and surrounding separators
+		if position > 0 {
+			filename = strings.ReplaceAll(filename, "{track}", fmt.Sprintf("%02d", position))
+		} else {
+			// Remove {track} with common separators
+			filename = regexp.MustCompile(`\{track\}\.\s*`).ReplaceAllString(filename, "")
+			filename = regexp.MustCompile(`\{track\}\s*-\s*`).ReplaceAllString(filename, "")
+			filename = regexp.MustCompile(`\{track\}\s*`).ReplaceAllString(filename, "")
+		}
+	} else {
+		// Legacy format support
 		switch filenameFormat {
 		case "artist-title":
 			filename = fmt.Sprintf("%s - %s", safeArtist, safeTitle)
@@ -65,10 +82,11 @@ func buildCoverFilename(trackName, artistName, filenameFormat string, includeTra
 			filename = fmt.Sprintf("%s - %s", safeTitle, safeArtist)
 		}
 
-	// Add track number prefix if enabled
+		// Add track number prefix if enabled (legacy behavior)
 		if includeTrackNumber && position > 0 {
 			filename = fmt.Sprintf("%02d. %s", position, filename)
 		}
+	}
 
 	return filename + ".jpg"
 }
@@ -89,6 +107,46 @@ func (c *CoverClient) getMaxResolutionURL(coverURL string) string {
 	return coverURL
 }
 
+// DownloadCoverToPath downloads cover art from URL to a specific path
+// If embedMaxQualityCover is true, it will try to get max resolution
+func (c *CoverClient) DownloadCoverToPath(coverURL, outputPath string, embedMaxQualityCover bool) error {
+	if coverURL == "" {
+		return fmt.Errorf("cover URL is required")
+	}
+
+	// Use max quality URL if setting is enabled
+	downloadURL := coverURL
+	if embedMaxQualityCover {
+		downloadURL = c.getMaxResolutionURL(coverURL)
+	}
+
+	// Download cover image
+	resp, err := c.httpClient.Get(downloadURL)
+	if err != nil {
+		return fmt.Errorf("failed to download cover: %v", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("failed to download cover: HTTP %d", resp.StatusCode)
+	}
+
+	// Create file
+	file, err := os.Create(outputPath)
+	if err != nil {
+		return fmt.Errorf("failed to create file: %v", err)
+	}
+	defer file.Close()
+
+	// Write content to file
+	_, err = io.Copy(file, resp.Body)
+	if err != nil {
+		return fmt.Errorf("failed to write cover file: %v", err)
+	}
+
+	return nil
+}
+
 // DownloadCover downloads cover art for a single track
 func (c *CoverClient) DownloadCover(req CoverDownloadRequest) (*CoverDownloadResponse, error) {
 	if req.CoverURL == "" {
@@ -102,6 +160,8 @@ func (c *CoverClient) DownloadCover(req CoverDownloadRequest) (*CoverDownloadRes
 	outputDir := req.OutputDir
 	if outputDir == "" {
 		outputDir = GetDefaultMusicPath()
+	} else {
+		outputDir = SanitizeFolderPath(outputDir)
 	}
 
 	if err := os.MkdirAll(outputDir, 0755); err != nil {

backend/deezer.go

@@ -1,380 +0,0 @@
-package backend
-
-import (
-	"encoding/base64"
-	"encoding/json"
-	"fmt"
-	"io"
-	"net/http"
-	"os"
-	"path/filepath"
-	"strings"
-	"time"
-)
-
-type DeezerDownloader struct {
-	client *http.Client
-}
-
-type DeezerTrack struct {
-	ID          int64  `json:"id"`
-	Title       string `json:"title"`
-	TitleShort  string `json:"title_short"`
-	Duration    int    `json:"duration"`
-	TrackPos    int    `json:"track_position"`
-	DiskNumber  int    `json:"disk_number"`
-	ISRC        string `json:"isrc"`
-	ReleaseDate string `json:"release_date"`
-	Artist      struct {
-		Name string `json:"name"`
-		ID   int64  `json:"id"`
-	} `json:"artist"`
-	Album struct {
-		Title    string `json:"title"`
-		ID       int64  `json:"id"`
-		CoverXL  string `json:"cover_xl"`
-		CoverBig string `json:"cover_big"`
-	} `json:"album"`
-	Contributors []struct {
-		Name string `json:"name"`
-		Role string `json:"role"`
-	} `json:"contributors"`
-}
-
-type DeezMateResponse struct {
-	Success bool `json:"success"`
-	Links   struct {
-		FLAC string `json:"flac"`
-	} `json:"links"`
-}
-
-func NewDeezerDownloader() *DeezerDownloader {
-	return &DeezerDownloader{
-		client: &http.Client{
-			Timeout: 60 * time.Second,
-		},
-	}
-}
-
-func (d *DeezerDownloader) GetDeezerURLFromSpotify(spotifyTrackID string) (string, error) {
-	// Decode base64 API URL
-	spotifyBase, _ := base64.StdEncoding.DecodeString("aHR0cHM6Ly9vcGVuLnNwb3RpZnkuY29tL3RyYWNrLw==")
-	spotifyURL := fmt.Sprintf("%s%s", string(spotifyBase), spotifyTrackID)
-
-	apiBase, _ := base64.StdEncoding.DecodeString("aHR0cHM6Ly9hcGkuc29uZy5saW5rL3YxLWFscGhhLjEvbGlua3M/dXJsPQ==")
-	apiURL := fmt.Sprintf("%s%s", string(apiBase), spotifyURL)
-
-	req, err := http.NewRequest("GET", apiURL, nil)
-	if err != nil {
-		return "", fmt.Errorf("failed to create request: %w", err)
-	}
-
-	fmt.Println("Getting Deezer URL...")
-
-	resp, err := d.client.Do(req)
-	if err != nil {
-		return "", fmt.Errorf("failed to get Deezer URL: %w", err)
-	}
-	defer resp.Body.Close()
-
-	if resp.StatusCode != 200 {
-		return "", fmt.Errorf("API returned status %d", resp.StatusCode)
-	}
-
-	var songLinkResp struct {
-		LinksByPlatform map[string]struct {
-			URL string `json:"url"`
-		} `json:"linksByPlatform"`
-	}
-	if err := json.NewDecoder(resp.Body).Decode(&songLinkResp); err != nil {
-		return "", fmt.Errorf("failed to decode response: %w", err)
-	}
-
-	deezerLink, ok := songLinkResp.LinksByPlatform["deezer"]
-	if !ok || deezerLink.URL == "" {
-		return "", fmt.Errorf("deezer link not found")
-	}
-
-	deezerURL := deezerLink.URL
-	fmt.Printf("Found Deezer URL: %s\n", deezerURL)
-	return deezerURL, nil
-}
-
-func (d *DeezerDownloader) GetTrackIDFromURL(deezerURL string) (int64, error) {
-	// Extract track ID from Deezer URL
-	// Format: https://www.deezer.com/track/3412534581
-	parts := strings.Split(deezerURL, "/track/")
-	if len(parts) < 2 {
-		return 0, fmt.Errorf("invalid Deezer URL format")
-	}
-
-	// Get the track ID part and remove any query parameters
-	trackIDStr := strings.Split(parts[1], "?")[0]
-	trackIDStr = strings.TrimSpace(trackIDStr)
-
-	var trackID int64
-	_, err := fmt.Sscanf(trackIDStr, "%d", &trackID)
-	if err != nil {
-		return 0, fmt.Errorf("failed to parse track ID: %w", err)
-	}
-
-	return trackID, nil
-}
-
-func (d *DeezerDownloader) GetTrackByID(trackID int64) (*DeezerTrack, error) {
-	// Decode base64 API URL
-	apiBase, _ := base64.StdEncoding.DecodeString("aHR0cHM6Ly9hcGkuZGVlemVyLmNvbS8yLjAvdHJhY2sv")
-	url := fmt.Sprintf("%s%d", string(apiBase), trackID)
-
-	resp, err := d.client.Get(url)
-	if err != nil {
-		return nil, fmt.Errorf("failed to fetch track: %w", err)
-	}
-	defer resp.Body.Close()
-
-	if resp.StatusCode != 200 {
-		return nil, fmt.Errorf("API returned status %d", resp.StatusCode)
-	}
-
-	var track DeezerTrack
-	if err := json.NewDecoder(resp.Body).Decode(&track); err != nil {
-		return nil, fmt.Errorf("failed to decode response: %w", err)
-	}
-
-	if track.ID == 0 {
-		return nil, fmt.Errorf("track not found")
-	}
-
-	return &track, nil
-}
-
-func (d *DeezerDownloader) GetDownloadURL(trackID int64) (string, error) {
-	// Decode base64 API URL
-	apiBase, _ := base64.StdEncoding.DecodeString("aHR0cHM6Ly9hcGkuZGVlem1hdGUuY29tL2RsLw==")
-	url := fmt.Sprintf("%s%d", string(apiBase), trackID)
-
-	resp, err := d.client.Get(url)
-	if err != nil {
-		return "", fmt.Errorf("failed to get download URL: %w", err)
-	}
-	defer resp.Body.Close()
-
-	var apiResp DeezMateResponse
-	if err := json.NewDecoder(resp.Body).Decode(&apiResp); err != nil {
-		return "", fmt.Errorf("failed to decode API response: %w", err)
-	}
-
-	if !apiResp.Success || apiResp.Links.FLAC == "" {
-		return "", fmt.Errorf("no FLAC download link available")
-	}
-
-	return apiResp.Links.FLAC, nil
-}
-
-func (d *DeezerDownloader) DownloadFile(url, filepath string) error {
-	resp, err := d.client.Get(url)
-	if err != nil {
-		return fmt.Errorf("failed to download file: %w", err)
-	}
-	defer resp.Body.Close()
-
-	if resp.StatusCode != 200 {
-		return fmt.Errorf("download failed with status %d", resp.StatusCode)
-	}
-
-	out, err := os.Create(filepath)
-	if err != nil {
-		return fmt.Errorf("failed to create file: %w", err)
-	}
-	defer out.Close()
-
-	fmt.Println("Downloading...")
-	// Use progress writer to track download
-	pw := NewProgressWriter(out)
-	_, err = io.Copy(pw, resp.Body)
-	if err != nil {
-		return fmt.Errorf("failed to write file: %w", err)
-	}
-
-	// Print final size
-	fmt.Printf("\rDownloaded: %.2f MB (Complete)\n", float64(pw.GetTotal())/(1024*1024))
-	return nil
-}
-
-func (d *DeezerDownloader) DownloadCoverArt(coverURL, filepath string) error {
-	if coverURL == "" {
-		return fmt.Errorf("no cover URL provided")
-	}
-
-	resp, err := d.client.Get(coverURL)
-	if err != nil {
-		return fmt.Errorf("failed to download cover: %w", err)
-	}
-	defer resp.Body.Close()
-
-	if resp.StatusCode != 200 {
-		return fmt.Errorf("cover download failed with status %d", resp.StatusCode)
-	}
-
-	out, err := os.Create(filepath)
-	if err != nil {
-		return fmt.Errorf("failed to create cover file: %w", err)
-	}
-	defer out.Close()
-
-	_, err = io.Copy(out, resp.Body)
-	return err
-}
-
-func buildFilename(title, artist string, trackNumber int, format string, includeTrackNumber bool, position int, useAlbumTrackNumber bool) string {
-	var filename string
-
-	// Build base filename based on format
-	switch format {
-	case "artist-title":
-		filename = fmt.Sprintf("%s - %s", artist, title)
-	case "title":
-		filename = title
-	default: // "title-artist"
-		filename = fmt.Sprintf("%s - %s", title, artist)
-	}
-
-	// Add track number prefix if enabled
-	if includeTrackNumber && position > 0 {
-		// Use album track number if in album folder structure, otherwise use playlist position
-		numberToUse := position
-		if useAlbumTrackNumber && trackNumber > 0 {
-			numberToUse = trackNumber
-		}
-		filename = fmt.Sprintf("%02d. %s", numberToUse, filename)
-	}
-
-	return filename + ".flac"
-}
-
-func (d *DeezerDownloader) DownloadByURL(deezerURL, outputDir, filenameFormat string, includeTrackNumber bool, position int, spotifyTrackName, spotifyArtistName, spotifyAlbumName string, useAlbumTrackNumber bool) (string, error) {
-	fmt.Printf("Using Deezer URL: %s\n", deezerURL)
-
-	// Extract track ID from URL
-	trackID, err := d.GetTrackIDFromURL(deezerURL)
-	if err != nil {
-		return "", err
-	}
-
-	// Get track info by ID
-	track, err := d.GetTrackByID(trackID)
-	if err != nil {
-		return "", err
-	}
-
-	// Use Spotify metadata if provided, otherwise fallback to Deezer metadata
-	artists := spotifyArtistName
-	trackTitle := spotifyTrackName
-	albumTitle := spotifyAlbumName
-
-	if artists == "" {
-		artists = track.Artist.Name
-		if len(track.Contributors) > 0 {
-			var mainArtists []string
-			for _, contrib := range track.Contributors {
-				if contrib.Role == "Main" {
-					mainArtists = append(mainArtists, contrib.Name)
-				}
-			}
-			if len(mainArtists) > 0 {
-				artists = strings.Join(mainArtists, ", ")
-			}
-		}
-	}
-
-	if trackTitle == "" {
-		trackTitle = track.Title
-	}
-
-	if albumTitle == "" {
-		albumTitle = track.Album.Title
-	}
-
-	fmt.Printf("Found track: %s - %s\n", artists, trackTitle)
-	fmt.Printf("Album: %s\n", albumTitle)
-
-	downloadURL, err := d.GetDownloadURL(track.ID)
-	if err != nil {
-		return "", err
-	}
-
-	safeArtist := sanitizeFilename(artists)
-	safeTitle := sanitizeFilename(trackTitle)
-
-	// Check if file with same ISRC already exists
-	if existingFile, exists := CheckISRCExists(outputDir, track.ISRC); exists {
-		fmt.Printf("File with ISRC %s already exists: %s\n", track.ISRC, existingFile)
-		return "EXISTS:" + existingFile, nil
-	}
-
-	// Build filename based on format settings
-	filename := buildFilename(safeTitle, safeArtist, track.TrackPos, filenameFormat, includeTrackNumber, position, useAlbumTrackNumber)
-	filepath := filepath.Join(outputDir, filename)
-
-	if fileInfo, err := os.Stat(filepath); err == nil && fileInfo.Size() > 0 {
-		fmt.Printf("File already exists: %s (%.2f MB)\n", filepath, float64(fileInfo.Size())/(1024*1024))
-		return "EXISTS:" + filepath, nil
-	}
-
-	fmt.Println("Downloading FLAC file...")
-	if err := d.DownloadFile(downloadURL, filepath); err != nil {
-		return "", err
-	}
-
-	fmt.Printf("Downloaded: %s\n", filepath)
-
-	coverPath := ""
-	if track.Album.CoverXL != "" {
-		coverPath = filepath + ".cover.jpg"
-		fmt.Println("Downloading cover art...")
-		if err := d.DownloadCoverArt(track.Album.CoverXL, coverPath); err != nil {
-			fmt.Printf("Warning: Failed to download cover art: %v\n", err)
-		} else {
-			defer os.Remove(coverPath)
-		}
-	}
-
-	fmt.Println("Embedding metadata and cover art...")
-	// Use album track number if in album folder structure, otherwise use playlist position
-	trackNumberToEmbed := 0
-	if position > 0 {
-		if useAlbumTrackNumber && track.TrackPos > 0 {
-			trackNumberToEmbed = track.TrackPos
-		} else {
-			trackNumberToEmbed = position
-		}
-	}
-
-	metadata := Metadata{
-		Title:       trackTitle,
-		Artist:      artists,
-		Album:       albumTitle,
-		Date:        track.ReleaseDate,
-		TrackNumber: trackNumberToEmbed,
-		DiscNumber:  track.DiskNumber,
-		ISRC:        track.ISRC,
-	}
-
-	if err := EmbedMetadata(filepath, metadata, coverPath); err != nil {
-		return "", fmt.Errorf("failed to embed metadata: %w", err)
-	}
-
-	fmt.Println("Metadata embedded successfully!")
-	fmt.Println("✓ Downloaded successfully from Deezer")
-	return filepath, nil
-}
-
-func (d *DeezerDownloader) DownloadBySpotifyID(spotifyTrackID, outputDir, filenameFormat string, includeTrackNumber bool, position int, spotifyTrackName, spotifyArtistName, spotifyAlbumName string, useAlbumTrackNumber bool) (string, error) {
-	// Get Deezer URL from Spotify track ID
-	deezerURL, err := d.GetDeezerURLFromSpotify(spotifyTrackID)
-	if err != nil {
-		return "", err
-	}
-
-	return d.DownloadByURL(deezerURL, outputDir, filenameFormat, includeTrackNumber, position, spotifyTrackName, spotifyArtistName, spotifyAlbumName, useAlbumTrackNumber)
-}

backend/ffmpeg.go

@@ -0,0 +1,557 @@
+package backend
+
+import (
+	"archive/tar"
+	"archive/zip"
+	"encoding/base64"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"runtime"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/ulikunitz/xz"
+)
+
+// decodeBase64 decodes a base64 encoded string
+func decodeBase64(encoded string) (string, error) {
+	decoded, err := base64.StdEncoding.DecodeString(encoded)
+	if err != nil {
+		return "", err
+	}
+	return string(decoded), nil
+}
+
+const (
+	ffmpegWindowsURL = "aHR0cHM6Ly9naXRodWIuY29tL0J0Yk4vRkZtcGVnLUJ1aWxkcy9yZWxlYXNlcy9kb3dubG9hZC9sYXRlc3QvZmZtcGVnLW1hc3Rlci1sYXRlc3Qtd2luNjQtZ3BsLnppcA=="
+	ffmpegLinuxURL   = "aHR0cHM6Ly9naXRodWIuY29tL0J0Yk4vRkZtcGVnLUJ1aWxkcy9yZWxlYXNlcy9kb3dubG9hZC9sYXRlc3QvZmZtcGVnLW1hc3Rlci1sYXRlc3QtbGludXg2NC1ncGwudGFyLnh6"
+	ffmpegMacOSURL   = "aHR0cHM6Ly9ldmVybWVldC5jeC9mZm1wZWcvZ2V0cmVsZWFzZS9mZm1wZWcvemlw"
+)
+
+// GetFFmpegDir returns the directory where ffmpeg should be stored
+func GetFFmpegDir() (string, error) {
+	homeDir, err := os.UserHomeDir()
+	if err != nil {
+		return "", fmt.Errorf("failed to get home directory: %w", err)
+	}
+	return filepath.Join(homeDir, ".spotiflac"), nil
+}
+
+// GetFFmpegPath returns the full path to the ffmpeg executable
+func GetFFmpegPath() (string, error) {
+	ffmpegDir, err := GetFFmpegDir()
+	if err != nil {
+		return "", err
+	}
+
+	ffmpegName := "ffmpeg"
+	if runtime.GOOS == "windows" {
+		ffmpegName = "ffmpeg.exe"
+	}
+
+	return filepath.Join(ffmpegDir, ffmpegName), nil
+}
+
+// IsFFmpegInstalled checks if ffmpeg is installed in the app directory
+func IsFFmpegInstalled() (bool, error) {
+	ffmpegPath, err := GetFFmpegPath()
+	if err != nil {
+		return false, err
+	}
+
+	_, err = os.Stat(ffmpegPath)
+	if os.IsNotExist(err) {
+		return false, nil
+	}
+	if err != nil {
+		return false, err
+	}
+
+	// Verify it's executable
+	cmd := exec.Command(ffmpegPath, "-version")
+	// Hide console window on Windows
+	setHideWindow(cmd)
+	err = cmd.Run()
+	return err == nil, nil
+}
+
+// DownloadFFmpeg downloads and extracts ffmpeg to the app directory
+func DownloadFFmpeg(progressCallback func(int)) error {
+	ffmpegDir, err := GetFFmpegDir()
+	if err != nil {
+		return err
+	}
+
+	// Create directory if it doesn't exist
+	if err := os.MkdirAll(ffmpegDir, 0755); err != nil {
+		return fmt.Errorf("failed to create ffmpeg directory: %w", err)
+	}
+
+	// Get the appropriate URL for the current OS
+	var encodedURL string
+	switch runtime.GOOS {
+	case "windows":
+		encodedURL = ffmpegWindowsURL
+	case "linux":
+		encodedURL = ffmpegLinuxURL
+	case "darwin":
+		encodedURL = ffmpegMacOSURL
+	default:
+		return fmt.Errorf("unsupported operating system: %s", runtime.GOOS)
+	}
+
+	// Decode URL
+	url, err := decodeBase64(encodedURL)
+	if err != nil {
+		return fmt.Errorf("failed to decode ffmpeg URL: %w", err)
+	}
+
+	fmt.Printf("[FFmpeg] Downloading from: %s\n", url)
+
+	// Create temporary file for download
+	tmpFile, err := os.CreateTemp("", "ffmpeg-*")
+	if err != nil {
+		return fmt.Errorf("failed to create temp file: %w", err)
+	}
+	defer os.Remove(tmpFile.Name())
+	defer tmpFile.Close()
+
+	// Download the file
+	resp, err := http.Get(url)
+	if err != nil {
+		return fmt.Errorf("failed to download ffmpeg: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("failed to download ffmpeg: HTTP %d", resp.StatusCode)
+	}
+
+	totalSize := resp.ContentLength
+	var downloaded int64
+
+	// Create a progress reader
+	buf := make([]byte, 32*1024)
+	for {
+		n, err := resp.Body.Read(buf)
+		if n > 0 {
+			_, writeErr := tmpFile.Write(buf[:n])
+			if writeErr != nil {
+				return fmt.Errorf("failed to write to temp file: %w", writeErr)
+			}
+			downloaded += int64(n)
+			if totalSize > 0 && progressCallback != nil {
+				progress := int(float64(downloaded) / float64(totalSize) * 100)
+				progressCallback(progress)
+			}
+		}
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return fmt.Errorf("failed to read response: %w", err)
+		}
+	}
+
+	tmpFile.Close()
+
+	fmt.Printf("[FFmpeg] Download complete, extracting...\n")
+
+	// Extract the archive
+	switch runtime.GOOS {
+	case "windows", "darwin":
+		return extractZip(tmpFile.Name(), ffmpegDir)
+	case "linux":
+		return extractTarXz(tmpFile.Name(), ffmpegDir)
+	default:
+		return fmt.Errorf("unsupported operating system: %s", runtime.GOOS)
+	}
+}
+
+// extractZip extracts ffmpeg from a zip archive
+func extractZip(zipPath, destDir string) error {
+	r, err := zip.OpenReader(zipPath)
+	if err != nil {
+		return fmt.Errorf("failed to open zip: %w", err)
+	}
+	defer r.Close()
+
+	ffmpegName := "ffmpeg"
+	if runtime.GOOS == "windows" {
+		ffmpegName = "ffmpeg.exe"
+	}
+
+	destPath := filepath.Join(destDir, ffmpegName)
+
+	for _, f := range r.File {
+		// Look for ffmpeg executable in any subdirectory
+		baseName := filepath.Base(f.Name)
+		if baseName == ffmpegName && !f.FileInfo().IsDir() {
+			fmt.Printf("[FFmpeg] Found: %s\n", f.Name)
+
+			rc, err := f.Open()
+			if err != nil {
+				return fmt.Errorf("failed to open file in zip: %w", err)
+			}
+			defer rc.Close()
+
+			outFile, err := os.OpenFile(destPath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0755)
+			if err != nil {
+				return fmt.Errorf("failed to create output file: %w", err)
+			}
+			defer outFile.Close()
+
+			_, err = io.Copy(outFile, rc)
+			if err != nil {
+				return fmt.Errorf("failed to extract file: %w", err)
+			}
+
+			fmt.Printf("[FFmpeg] Extracted to: %s\n", destPath)
+			return nil
+		}
+	}
+
+	return fmt.Errorf("ffmpeg executable not found in archive")
+}
+
+// extractTarXz extracts ffmpeg from a tar.xz archive
+func extractTarXz(tarXzPath, destDir string) error {
+	file, err := os.Open(tarXzPath)
+	if err != nil {
+		return fmt.Errorf("failed to open tar.xz: %w", err)
+	}
+	defer file.Close()
+
+	xzReader, err := xz.NewReader(file)
+	if err != nil {
+		return fmt.Errorf("failed to create xz reader: %w", err)
+	}
+
+	tarReader := tar.NewReader(xzReader)
+
+	ffmpegName := "ffmpeg"
+	destPath := filepath.Join(destDir, ffmpegName)
+
+	for {
+		header, err := tarReader.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return fmt.Errorf("failed to read tar: %w", err)
+		}
+
+		baseName := filepath.Base(header.Name)
+		if baseName == ffmpegName && header.Typeflag == tar.TypeReg {
+			fmt.Printf("[FFmpeg] Found: %s\n", header.Name)
+
+			outFile, err := os.OpenFile(destPath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0755)
+			if err != nil {
+				return fmt.Errorf("failed to create output file: %w", err)
+			}
+			defer outFile.Close()
+
+			_, err = io.Copy(outFile, tarReader)
+			if err != nil {
+				return fmt.Errorf("failed to extract file: %w", err)
+			}
+
+			fmt.Printf("[FFmpeg] Extracted to: %s\n", destPath)
+			return nil
+		}
+	}
+
+	return fmt.Errorf("ffmpeg executable not found in archive")
+}
+
+// ConvertAudioRequest represents a request to convert audio files
+type ConvertAudioRequest struct {
+	InputFiles   []string `json:"input_files"`
+	OutputFormat string   `json:"output_format"` // mp3, m4a
+	Bitrate      string   `json:"bitrate"`       // e.g., "320k", "256k", "192k", "128k"
+}
+
+// ConvertAudioResult represents the result of a single file conversion
+type ConvertAudioResult struct {
+	InputFile  string `json:"input_file"`
+	OutputFile string `json:"output_file"`
+	Success    bool   `json:"success"`
+	Error      string `json:"error,omitempty"`
+}
+
+// ConvertAudio converts audio files using ffmpeg while preserving metadata
+func ConvertAudio(req ConvertAudioRequest) ([]ConvertAudioResult, error) {
+	ffmpegPath, err := GetFFmpegPath()
+	if err != nil {
+		return nil, fmt.Errorf("failed to get ffmpeg path: %w", err)
+	}
+
+	installed, err := IsFFmpegInstalled()
+	if err != nil || !installed {
+		return nil, fmt.Errorf("ffmpeg is not installed")
+	}
+
+	results := make([]ConvertAudioResult, len(req.InputFiles))
+	var wg sync.WaitGroup
+	var mu sync.Mutex
+
+	// Convert files in parallel
+	for i, inputFile := range req.InputFiles {
+		wg.Add(1)
+		go func(idx int, inputFile string) {
+			defer wg.Done()
+
+			result := ConvertAudioResult{
+				InputFile: inputFile,
+			}
+
+			// Get input file info
+			inputExt := strings.ToLower(filepath.Ext(inputFile))
+			baseName := strings.TrimSuffix(filepath.Base(inputFile), inputExt)
+			inputDir := filepath.Dir(inputFile)
+
+			// Determine output directory: same as input file location + subfolder (MP3 or M4A)
+			outputFormatUpper := strings.ToUpper(req.OutputFormat)
+			outputDir := filepath.Join(inputDir, outputFormatUpper)
+
+			// Create output directory if it doesn't exist
+			if err := os.MkdirAll(outputDir, 0755); err != nil {
+				result.Error = fmt.Sprintf("failed to create output directory: %v", err)
+				result.Success = false
+				mu.Lock()
+				results[idx] = result
+				mu.Unlock()
+				return
+			}
+
+			// Determine output path
+			outputExt := "." + strings.ToLower(req.OutputFormat)
+			outputFile := filepath.Join(outputDir, baseName+outputExt)
+
+			// Skip if same format
+			if inputExt == outputExt {
+				result.Error = "Input and output formats are the same"
+				result.Success = false
+				mu.Lock()
+				results[idx] = result
+				mu.Unlock()
+				return
+			}
+
+			result.OutputFile = outputFile
+
+			// Extract cover art and lyrics from input file before conversion
+			var coverArtPath string
+			var lyrics string
+			
+			coverArtPath, _ = ExtractCoverArt(inputFile)
+			lyrics, err = ExtractLyrics(inputFile)
+			if err != nil {
+				fmt.Printf("[FFmpeg] Warning: Failed to extract lyrics from %s: %v\n", inputFile, err)
+			} else if lyrics != "" {
+				fmt.Printf("[FFmpeg] Lyrics extracted from %s: %d characters\n", inputFile, len(lyrics))
+			} else {
+				fmt.Printf("[FFmpeg] No lyrics found in %s\n", inputFile)
+			}
+
+			// Build ffmpeg command
+			args := []string{
+				"-i", inputFile,
+				"-y", // Overwrite output
+			}
+
+			// Add codec and bitrate based on output format
+			switch req.OutputFormat {
+			case "mp3":
+				args = append(args,
+					"-codec:a", "libmp3lame",
+					"-b:a", req.Bitrate,
+					"-map", "0:a", // Map audio stream
+					"-map_metadata", "0", // Copy all metadata
+					"-id3v2_version", "3", // Use ID3v2.3 for better compatibility
+				)
+				// Map video stream if exists (for cover art)
+				args = append(args, "-map", "0:v?", "-c:v", "copy")
+			case "m4a":
+				args = append(args,
+					"-codec:a", "aac",
+					"-b:a", req.Bitrate,
+					"-map", "0:a", // Map audio stream
+					"-map_metadata", "0", // Copy all metadata
+				)
+				// Map video stream for cover art in M4A
+				args = append(args, "-map", "0:v?", "-c:v", "copy", "-disposition:v:0", "attached_pic")
+			}
+
+			args = append(args, outputFile)
+
+			fmt.Printf("[FFmpeg] Converting: %s -> %s\n", inputFile, outputFile)
+
+			cmd := exec.Command(ffmpegPath, args...)
+			// Hide console window on Windows
+			setHideWindow(cmd)
+			output, err := cmd.CombinedOutput()
+			if err != nil {
+				result.Error = fmt.Sprintf("conversion failed: %s - %s", err.Error(), string(output))
+				result.Success = false
+				mu.Lock()
+				results[idx] = result
+				mu.Unlock()
+				// Clean up temp cover art file if exists
+				if coverArtPath != "" {
+					os.Remove(coverArtPath)
+				}
+				return
+			}
+
+			// Embed cover art and lyrics after conversion if they were extracted
+			if coverArtPath != "" {
+				if err := EmbedCoverArtOnly(outputFile, coverArtPath); err != nil {
+					fmt.Printf("[FFmpeg] Warning: Failed to embed cover art: %v\n", err)
+				} else {
+					fmt.Printf("[FFmpeg] Cover art embedded successfully\n")
+				}
+				os.Remove(coverArtPath) // Clean up temp file
+			}
+
+			if lyrics != "" {
+				if err := EmbedLyricsOnlyUniversal(outputFile, lyrics); err != nil {
+					fmt.Printf("[FFmpeg] Warning: Failed to embed lyrics: %v\n", err)
+				} else {
+					fmt.Printf("[FFmpeg] Lyrics embedded successfully\n")
+				}
+			}
+
+			result.Success = true
+			fmt.Printf("[FFmpeg] Successfully converted: %s\n", outputFile)
+
+			mu.Lock()
+			results[idx] = result
+			mu.Unlock()
+		}(i, inputFile)
+	}
+
+	wg.Wait()
+	return results, nil
+}
+
+// GetAudioInfo returns information about an audio file
+type AudioFileInfo struct {
+	Path     string `json:"path"`
+	Filename string `json:"filename"`
+	Format   string `json:"format"`
+	Size     int64  `json:"size"`
+}
+
+// GetAudioFileInfo gets information about an audio file
+func GetAudioFileInfo(filePath string) (*AudioFileInfo, error) {
+	info, err := os.Stat(filePath)
+	if err != nil {
+		return nil, err
+	}
+
+	ext := strings.ToLower(strings.TrimPrefix(filepath.Ext(filePath), "."))
+	return &AudioFileInfo{
+		Path:     filePath,
+		Filename: filepath.Base(filePath),
+		Format:   ext,
+		Size:     info.Size(),
+	}, nil
+}
+
+// InstallFFmpegFromFile installs ffmpeg from a local file path
+func InstallFFmpegFromFile(filePath string) error {
+	// Check if file exists
+	info, err := os.Stat(filePath)
+	if err != nil {
+		return fmt.Errorf("file does not exist: %w", err)
+	}
+
+	// Check if it's a regular file (not a directory)
+	if info.IsDir() {
+		return fmt.Errorf("path is a directory, not a file")
+	}
+
+	// Verify it's likely an ffmpeg executable by checking the filename
+	fileName := strings.ToLower(filepath.Base(filePath))
+	expectedName := "ffmpeg"
+	if runtime.GOOS == "windows" {
+		expectedName = "ffmpeg.exe"
+	}
+
+	if fileName != expectedName && !strings.Contains(fileName, "ffmpeg") {
+		return fmt.Errorf("file does not appear to be an ffmpeg executable (expected name containing 'ffmpeg')")
+	}
+
+	// Get destination path
+	ffmpegPath, err := GetFFmpegPath()
+	if err != nil {
+		return fmt.Errorf("failed to get ffmpeg path: %w", err)
+	}
+
+	ffmpegDir := filepath.Dir(ffmpegPath)
+	
+	// Create directory if it doesn't exist
+	if err := os.MkdirAll(ffmpegDir, 0755); err != nil {
+		return fmt.Errorf("failed to create ffmpeg directory: %w", err)
+	}
+
+	// Copy file to destination
+	sourceFile, err := os.Open(filePath)
+	if err != nil {
+		return fmt.Errorf("failed to open source file: %w", err)
+	}
+
+	destFile, err := os.OpenFile(ffmpegPath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0755)
+	if err != nil {
+		sourceFile.Close()
+		return fmt.Errorf("failed to create destination file: %w", err)
+	}
+
+	_, err = io.Copy(destFile, sourceFile)
+	sourceFile.Close()
+	if err != nil {
+		destFile.Close()
+		return fmt.Errorf("failed to copy file: %w", err)
+	}
+	
+	// Ensure all data is written to disk
+	if err := destFile.Sync(); err != nil {
+		destFile.Close()
+		return fmt.Errorf("failed to sync file: %w", err)
+	}
+	destFile.Close()
+
+	// On Windows, file may still be locked by antivirus or system
+	// Wait a bit and retry verification
+	maxRetries := 3
+	retryDelay := 500 * time.Millisecond
+	
+	var verifyErr error
+	for i := 0; i < maxRetries; i++ {
+		if i > 0 {
+			time.Sleep(retryDelay)
+		}
+		
+		cmd := exec.Command(ffmpegPath, "-version")
+		// Hide console window on Windows
+		setHideWindow(cmd)
+		verifyErr = cmd.Run()
+		if verifyErr == nil {
+			break
+		}
+	}
+	
+	if verifyErr != nil {
+		return fmt.Errorf("file copied but ffmpeg verification failed after %d attempts: %w", maxRetries, verifyErr)
+	}
+
+	fmt.Printf("[FFmpeg] Successfully installed from: %s\n", filePath)
+	return nil
+}
+

backend/ffmpeg_unix.go

@@ -0,0 +1,14 @@
+//go:build !windows
+// +build !windows
+
+package backend
+
+import (
+	"os/exec"
+)
+
+// setHideWindow is a no-op on non-Windows platforms
+func setHideWindow(cmd *exec.Cmd) {
+	// No-op on Unix-like systems
+}
+

backend/ffmpeg_windows.go

@@ -0,0 +1,17 @@
+//go:build windows
+// +build windows
+
+package backend
+
+import (
+	"os/exec"
+	"syscall"
+)
+
+// setHideWindow sets HideWindow attribute for Windows processes
+func setHideWindow(cmd *exec.Cmd) {
+	cmd.SysProcAttr = &syscall.SysProcAttr{
+		HideWindow: true,
+	}
+}
+

backend/file_dialog.go

@@ -0,0 +1,52 @@
+package backend
+
+import (
+	"context"
+
+	"github.com/wailsapp/wails/v2/pkg/runtime"
+)
+
+// SelectMultipleFiles opens a file dialog to select multiple audio files
+func SelectMultipleFiles(ctx context.Context) ([]string, error) {
+	files, err := runtime.OpenMultipleFilesDialog(ctx, runtime.OpenDialogOptions{
+		Title: "Select Audio Files",
+		Filters: []runtime.FileFilter{
+			{
+				DisplayName: "Audio Files (*.mp3, *.m4a, *.flac)",
+				Pattern:     "*.mp3;*.m4a;*.flac",
+			},
+			{
+				DisplayName: "MP3 Files (*.mp3)",
+				Pattern:     "*.mp3",
+			},
+			{
+				DisplayName: "M4A Files (*.m4a)",
+				Pattern:     "*.m4a",
+			},
+			{
+				DisplayName: "FLAC Files (*.flac)",
+				Pattern:     "*.flac",
+			},
+			{
+				DisplayName: "All Files (*.*)",
+				Pattern:     "*.*",
+			},
+		},
+	})
+	if err != nil {
+		return nil, err
+	}
+	return files, nil
+}
+
+// SelectOutputDirectory opens a directory dialog to select output folder
+func SelectOutputDirectory(ctx context.Context) (string, error) {
+	dir, err := runtime.OpenDirectoryDialog(ctx, runtime.OpenDialogOptions{
+		Title: "Select Output Directory",
+	})
+	if err != nil {
+		return "", err
+	}
+	return dir, nil
+}
+

backend/filename.go

@@ -2,8 +2,11 @@ package backend
 
 import (
 	"fmt"
+	"path/filepath"
 	"regexp"
 	"strings"
+	"unicode"
+	"unicode/utf8"
 )
 
 // BuildExpectedFilename builds the expected filename based on track metadata and settings
@@ -14,7 +17,23 @@ func BuildExpectedFilename(trackName, artistName, filenameFormat string, include
 
 	var filename string
 
-	// Build base filename based on format
+	// Check if format is a template (contains {})
+	if strings.Contains(filenameFormat, "{") {
+		filename = filenameFormat
+		filename = strings.ReplaceAll(filename, "{title}", safeTitle)
+		filename = strings.ReplaceAll(filename, "{artist}", safeArtist)
+
+		// Handle track number - if position is 0, remove {track} and surrounding separators
+		if position > 0 {
+			filename = strings.ReplaceAll(filename, "{track}", fmt.Sprintf("%02d", position))
+		} else {
+			// Remove {track} with common separators like ". " or " - " or ". "
+			filename = regexp.MustCompile(`\{track\}\.\s*`).ReplaceAllString(filename, "")
+			filename = regexp.MustCompile(`\{track\}\s*-\s*`).ReplaceAllString(filename, "")
+			filename = regexp.MustCompile(`\{track\}\s*`).ReplaceAllString(filename, "")
+		}
+	} else {
+		// Legacy format support
 		switch filenameFormat {
 		case "artist-title":
 			filename = fmt.Sprintf("%s - %s", safeArtist, safeTitle)
@@ -24,23 +43,121 @@ func BuildExpectedFilename(trackName, artistName, filenameFormat string, include
 			filename = fmt.Sprintf("%s - %s", safeTitle, safeArtist)
 		}
 
-	// Add track number prefix if enabled
-	// Note: We can't determine the exact track number without fetching from API
-	// So we only add it if position > 0 (bulk download)
+		// Add track number prefix if enabled (legacy behavior)
 		if includeTrackNumber && position > 0 {
 			filename = fmt.Sprintf("%02d. %s", position, filename)
 		}
+	}
 
 	return filename + ".flac"
 }
 
 // sanitizeFilename removes invalid characters from filename
 func sanitizeFilename(name string) string {
-	re := regexp.MustCompile(`[<>:"/\\|?*]`)
-	sanitized := re.ReplaceAllString(name, "_")
+	// Replace forward slash with space (more natural than underscore)
+	sanitized := strings.ReplaceAll(name, "/", " ")
+	
+	// Remove other invalid filesystem characters (replace with space)
+	re := regexp.MustCompile(`[<>:"\\|?*]`)
+	sanitized = re.ReplaceAllString(sanitized, " ")
+	
+	// Remove control characters (0x00-0x1F, 0x7F)
+	var result strings.Builder
+	for _, r := range sanitized {
+		// Keep printable characters and valid Unicode characters
+		// Remove control characters, but keep spaces, tabs, newlines for now
+		if r < 0x20 && r != 0x09 && r != 0x0A && r != 0x0D {
+			continue
+		}
+		if r == 0x7F {
+			continue
+		}
+		// Remove emoji and other symbols that might cause issues
+		// Keep letters, numbers, and common punctuation
+		if unicode.IsControl(r) && r != 0x09 && r != 0x0A && r != 0x0D {
+			continue
+		}
+		// Remove emoji ranges (most emoji are in these ranges)
+		if (r >= 0x1F300 && r <= 0x1F9FF) || // Miscellaneous Symbols and Pictographs, Emoticons
+			(r >= 0x2600 && r <= 0x26FF) ||   // Miscellaneous Symbols
+			(r >= 0x2700 && r <= 0x27BF) ||   // Dingbats
+			(r >= 0xFE00 && r <= 0xFE0F) ||   // Variation Selectors
+			(r >= 0x1F900 && r <= 0x1F9FF) || // Supplemental Symbols and Pictographs
+			(r >= 0x1F600 && r <= 0x1F64F) || // Emoticons
+			(r >= 0x1F680 && r <= 0x1F6FF) || // Transport and Map Symbols
+			(r >= 0x1F1E0 && r <= 0x1F1FF) {  // Regional Indicator Symbols (flags)
+			continue
+		}
+		result.WriteRune(r)
+	}
+	
+	sanitized = result.String()
 	sanitized = strings.TrimSpace(sanitized)
+	
+	// Remove leading/trailing dots and spaces (Windows doesn't allow these)
+	sanitized = strings.Trim(sanitized, ". ")
+	
+	// Normalize consecutive spaces to single space
+	re = regexp.MustCompile(`\s+`)
+	sanitized = re.ReplaceAllString(sanitized, " ")
+	
+	// Normalize consecutive underscores to single underscore
+	re = regexp.MustCompile(`_+`)
+	sanitized = re.ReplaceAllString(sanitized, "_")
+	
+	// Remove leading/trailing underscores and spaces
+	sanitized = strings.Trim(sanitized, "_ ")
+	
 	if sanitized == "" {
 		return "Unknown"
 	}
+	
+	// Ensure the result is valid UTF-8
+	if !utf8.ValidString(sanitized) {
+		// If invalid UTF-8, try to fix it
+		sanitized = strings.ToValidUTF8(sanitized, "_")
+	}
+	
 	return sanitized
 }
+
+// SanitizeFolderPath sanitizes each component of a folder path and normalizes separators
+func SanitizeFolderPath(folderPath string) string {
+	// Normalize all forward slashes to backslashes on Windows
+	normalizedPath := strings.ReplaceAll(folderPath, "/", string(filepath.Separator))
+
+	// Detect separator
+	sep := string(filepath.Separator)
+
+	// Split path into components
+	parts := strings.Split(normalizedPath, sep)
+	sanitizedParts := make([]string, 0, len(parts))
+
+	for i, part := range parts {
+		// Keep drive letter intact on Windows (e.g., "C:")
+		if i == 0 && len(part) == 2 && part[1] == ':' {
+			sanitizedParts = append(sanitizedParts, part)
+			continue
+		}
+
+		// Keep empty first part for absolute paths on Unix (e.g., "/Users/...")
+		if i == 0 && part == "" {
+			sanitizedParts = append(sanitizedParts, part)
+			continue
+		}
+
+		// Sanitize each folder name (but don't replace / or \ since we already normalized)
+		sanitized := sanitizeFolderName(part)
+		if sanitized != "" {
+			sanitizedParts = append(sanitizedParts, sanitized)
+		}
+	}
+
+	return strings.Join(sanitizedParts, sep)
+}
+
+// sanitizeFolderName removes invalid characters from a single folder name
+func sanitizeFolderName(name string) string {
+	// Use the same sanitization as filename
+	return sanitizeFilename(name)
+}

backend/lyrics.go

@@ -6,12 +6,27 @@ import (
 	"fmt"
 	"io"
 	"net/http"
+	"net/url"
 	"os"
 	"path/filepath"
+	"regexp"
 	"strings"
 	"time"
 )
 
+// LRCLibResponse represents the LRCLIB API response
+type LRCLibResponse struct {
+	ID            int     `json:"id"`
+	Name          string  `json:"name"`
+	TrackName     string  `json:"trackName"`
+	ArtistName    string  `json:"artistName"`
+	AlbumName     string  `json:"albumName"`
+	Duration      float64 `json:"duration"`
+	Instrumental  bool    `json:"instrumental"`
+	PlainLyrics   string  `json:"plainLyrics"`
+	SyncedLyrics  string  `json:"syncedLyrics"`
+}
+
 // LyricsLine represents a single line of lyrics
 type LyricsLine struct {
 	StartTimeMs string `json:"startTimeMs"`
@@ -59,35 +74,203 @@ func NewLyricsClient() *LyricsClient {
 	}
 }
 
-// FetchLyrics fetches lyrics from the Spotify Lyrics API
-func (c *LyricsClient) FetchLyrics(spotifyID string) (*LyricsResponse, error) {
-	// Decode base64 API URL
-	apiBase, _ := base64.StdEncoding.DecodeString("aHR0cHM6Ly9zcG90aWZ5LWx5cmljcy1hcGktcGkudmVyY2VsLmFwcC8/dHJhY2tpZD0=")
-	url := fmt.Sprintf("%s%s", string(apiBase), spotifyID)
+// FetchLyricsWithMetadata fetches lyrics using track name and artist from LRCLIB
+func (c *LyricsClient) FetchLyricsWithMetadata(trackName, artistName string) (*LyricsResponse, error) {
+	// Try LRCLIB API
+	apiBase, _ := base64.StdEncoding.DecodeString("aHR0cHM6Ly9scmNsaWIubmV0L2FwaS9nZXQ/YXJ0aXN0X25hbWU9")
+	apiURL := fmt.Sprintf("%s%s&track_name=%s",
+		string(apiBase),
+		url.QueryEscape(artistName),
+		url.QueryEscape(trackName))
 
-	resp, err := c.httpClient.Get(url)
+	resp, err := c.httpClient.Get(apiURL)
 	if err != nil {
-		return nil, fmt.Errorf("failed to fetch lyrics: %v", err)
+		return nil, fmt.Errorf("failed to fetch from LRCLIB: %v", err)
 	}
 	defer resp.Body.Close()
 
+	if resp.StatusCode != 200 {
+		return nil, fmt.Errorf("LRCLIB returned status %d", resp.StatusCode)
+	}
+
 	body, err := io.ReadAll(resp.Body)
 	if err != nil {
-		return nil, fmt.Errorf("failed to read response: %v", err)
+		return nil, fmt.Errorf("failed to read LRCLIB response: %v", err)
 	}
 
-	var lyricsResp LyricsResponse
-	if err := json.Unmarshal(body, &lyricsResp); err != nil {
-		return nil, fmt.Errorf("failed to parse lyrics response: %v", err)
+	var lrcLibResp LRCLibResponse
+	if err := json.Unmarshal(body, &lrcLibResp); err != nil {
+		return nil, fmt.Errorf("failed to parse LRCLIB response: %v", err)
 	}
 
-	if lyricsResp.Error {
-		return nil, fmt.Errorf("lyrics not found for this track")
+	// Convert LRCLIB response to our LyricsResponse format
+	return c.convertLRCLibToLyricsResponse(&lrcLibResp), nil
 }
 
-	return &lyricsResp, nil
+// convertLRCLibToLyricsResponse converts LRCLIB response to our standard format
+func (c *LyricsClient) convertLRCLibToLyricsResponse(lrcLib *LRCLibResponse) *LyricsResponse {
+	resp := &LyricsResponse{
+		Error:    false,
+		SyncType: "LINE_SYNCED",
+		Lines:    []LyricsLine{},
 	}
 
+	// Prefer synced lyrics, fall back to plain
+	lyricsText := lrcLib.SyncedLyrics
+	if lyricsText == "" {
+		lyricsText = lrcLib.PlainLyrics
+		resp.SyncType = "UNSYNCED"
+	}
+
+	if lyricsText == "" {
+		resp.Error = true
+		return resp
+	}
+
+	// Parse synced lyrics format [mm:ss.xx] text
+	lines := strings.Split(lyricsText, "\n")
+	for _, line := range lines {
+		line = strings.TrimSpace(line)
+		if line == "" {
+			continue
+		}
+
+		// Check if line has timestamp [mm:ss.xx]
+		if strings.HasPrefix(line, "[") && len(line) > 10 {
+			closeBracket := strings.Index(line, "]")
+			if closeBracket > 0 {
+				timestamp := line[1:closeBracket]
+				words := strings.TrimSpace(line[closeBracket+1:])
+
+				// Convert [mm:ss.xx] to milliseconds
+				ms := lrcTimestampToMs(timestamp)
+				resp.Lines = append(resp.Lines, LyricsLine{
+					StartTimeMs: fmt.Sprintf("%d", ms),
+					Words:       words,
+				})
+				continue
+			}
+		}
+
+		// Plain lyrics line (no timestamp)
+		resp.Lines = append(resp.Lines, LyricsLine{
+			StartTimeMs: "0",
+			Words:       line,
+		})
+	}
+
+	return resp
+}
+
+// lrcTimestampToMs converts LRC timestamp [mm:ss.xx] to milliseconds
+func lrcTimestampToMs(timestamp string) int64 {
+	var minutes, seconds, centiseconds int64
+	// Try parsing mm:ss.xx format
+	n, _ := fmt.Sscanf(timestamp, "%d:%d.%d", &minutes, &seconds, &centiseconds)
+	if n >= 2 {
+		return minutes*60*1000 + seconds*1000 + centiseconds*10
+	}
+	return 0
+}
+
+// FetchLyricsFromLRCLibSearch fetches lyrics using LRCLIB search API
+func (c *LyricsClient) FetchLyricsFromLRCLibSearch(trackName, artistName string) (*LyricsResponse, error) {
+	query := fmt.Sprintf("%s %s", artistName, trackName)
+	apiBase, _ := base64.StdEncoding.DecodeString("aHR0cHM6Ly9scmNsaWIubmV0L2FwaS9zZWFyY2g/cT0=")
+	apiURL := fmt.Sprintf("%s%s", string(apiBase), url.QueryEscape(query))
+
+	resp, err := c.httpClient.Get(apiURL)
+	if err != nil {
+		return nil, fmt.Errorf("request failed: %v", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != 200 {
+		return nil, fmt.Errorf("status %d", resp.StatusCode)
+	}
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return nil, fmt.Errorf("read failed: %v", err)
+	}
+
+	var results []LRCLibResponse
+	if err := json.Unmarshal(body, &results); err != nil {
+		return nil, fmt.Errorf("parse failed: %v", err)
+	}
+
+	if len(results) == 0 {
+		return nil, fmt.Errorf("no results found")
+	}
+
+	// Find best match - prefer one with synced lyrics
+	var best *LRCLibResponse
+	for i := range results {
+		if results[i].SyncedLyrics != "" {
+			best = &results[i]
+			break
+		}
+		if best == nil && results[i].PlainLyrics != "" {
+			best = &results[i]
+		}
+	}
+
+	if best == nil {
+		best = &results[0]
+	}
+
+	return c.convertLRCLibToLyricsResponse(best), nil
+}
+
+// simplifyTrackName removes common suffixes like "(feat. X)", "(Remastered)", etc.
+func simplifyTrackName(name string) string {
+	// Remove content in parentheses
+	if idx := strings.Index(name, "("); idx > 0 {
+		name = strings.TrimSpace(name[:idx])
+	}
+	// Remove content after " - " (like "From the Motion Picture")
+	if idx := strings.Index(name, " - "); idx > 0 {
+		name = strings.TrimSpace(name[:idx])
+	}
+	return name
+}
+
+// FetchLyricsAllSources tries all LRCLIB sources to get lyrics
+func (c *LyricsClient) FetchLyricsAllSources(spotifyID, trackName, artistName string) (*LyricsResponse, string, error) {
+	// 1. Try LRCLIB exact match
+	resp, err := c.FetchLyricsWithMetadata(trackName, artistName)
+	if err == nil && resp != nil && !resp.Error && len(resp.Lines) > 0 {
+		return resp, "LRCLIB", nil
+	}
+	fmt.Printf("   LRCLIB exact: %v\n", err)
+
+	// 2. Try LRCLIB search
+	resp, err = c.FetchLyricsFromLRCLibSearch(trackName, artistName)
+	if err == nil && resp != nil && !resp.Error && len(resp.Lines) > 0 {
+		return resp, "LRCLIB Search", nil
+	}
+	fmt.Printf("   LRCLIB search: %v\n", err)
+
+	// 3. Try with simplified track name (remove parentheses, subtitles)
+	simplifiedTrack := simplifyTrackName(trackName)
+	if simplifiedTrack != trackName {
+		fmt.Printf("   Trying simplified name: %s\n", simplifiedTrack)
+		
+		resp, err = c.FetchLyricsWithMetadata(simplifiedTrack, artistName)
+		if err == nil && resp != nil && !resp.Error && len(resp.Lines) > 0 {
+			return resp, "LRCLIB (simplified)", nil
+		}
+
+		resp, err = c.FetchLyricsFromLRCLibSearch(simplifiedTrack, artistName)
+		if err == nil && resp != nil && !resp.Error && len(resp.Lines) > 0 {
+			return resp, "LRCLIB Search (simplified)", nil
+		}
+	}
+
+	return nil, "", fmt.Errorf("lyrics not found in any source")
+}
+
+
 // ConvertToLRC converts lyrics response to LRC format
 func (c *LyricsClient) ConvertToLRC(lyrics *LyricsResponse, trackName, artistName string) string {
 	var sb strings.Builder
@@ -132,7 +315,23 @@ func buildLyricsFilename(trackName, artistName, filenameFormat string, includeTr
 
 	var filename string
 
-	// Build base filename based on format
+	// Check if format is a template (contains {})
+	if strings.Contains(filenameFormat, "{") {
+		filename = filenameFormat
+		filename = strings.ReplaceAll(filename, "{title}", safeTitle)
+		filename = strings.ReplaceAll(filename, "{artist}", safeArtist)
+
+		// Handle track number - if position is 0, remove {track} and surrounding separators
+		if position > 0 {
+			filename = strings.ReplaceAll(filename, "{track}", fmt.Sprintf("%02d", position))
+		} else {
+			// Remove {track} with common separators
+			filename = regexp.MustCompile(`\{track\}\.\s*`).ReplaceAllString(filename, "")
+			filename = regexp.MustCompile(`\{track\}\s*-\s*`).ReplaceAllString(filename, "")
+			filename = regexp.MustCompile(`\{track\}\s*`).ReplaceAllString(filename, "")
+		}
+	} else {
+		// Legacy format support
 		switch filenameFormat {
 		case "artist-title":
 			filename = fmt.Sprintf("%s - %s", safeArtist, safeTitle)
@@ -142,10 +341,11 @@ func buildLyricsFilename(trackName, artistName, filenameFormat string, includeTr
 			filename = fmt.Sprintf("%s - %s", safeTitle, safeArtist)
 		}
 
-	// Add track number prefix if enabled
+		// Add track number prefix if enabled (legacy behavior)
 		if includeTrackNumber && position > 0 {
 			filename = fmt.Sprintf("%02d. %s", position, filename)
 		}
+	}
 
 	return filename + ".lrc"
 }
@@ -163,6 +363,8 @@ func (c *LyricsClient) DownloadLyrics(req LyricsDownloadRequest) (*LyricsDownloa
 	outputDir := req.OutputDir
 	if outputDir == "" {
 		outputDir = GetDefaultMusicPath()
+	} else {
+		outputDir = SanitizeFolderPath(outputDir)
 	}
 
 	if err := os.MkdirAll(outputDir, 0755); err != nil {
@@ -190,8 +392,8 @@ func (c *LyricsClient) DownloadLyrics(req LyricsDownloadRequest) (*LyricsDownloa
 		}, nil
 	}
 
-	// Fetch lyrics
-	lyrics, err := c.FetchLyrics(req.SpotifyID)
+	// Fetch lyrics from LRCLIB
+	lyrics, _, err := c.FetchLyricsAllSources(req.SpotifyID, req.TrackName, req.ArtistName)
 	if err != nil {
 		return &LyricsDownloadResponse{
 			Success: false,

backend/metadata.go

@@ -3,9 +3,12 @@ package backend
 import (
 	"fmt"
 	"os"
+	"os/exec"
+	pathfilepath "path/filepath"
 	"strconv"
 	"strings"
 
+	id3v2 "github.com/bogem/id3v2/v2"
 	"github.com/go-flac/flacpicture"
 	"github.com/go-flac/flacvorbis"
 	"github.com/go-flac/go-flac"
@@ -15,10 +18,15 @@ type Metadata struct {
 	Title       string
 	Artist      string
 	Album       string
-	Date        string
+	AlbumArtist string
+	Date        string // Recorded date (full date YYYY-MM-DD)
+	ReleaseDate string // Release date (full date) - kept for compatibility
 	TrackNumber int
+	TotalTracks int // Total tracks in album
 	DiscNumber  int
 	ISRC        string
+	Lyrics      string
+	Description string
 }
 
 func EmbedMetadata(filepath string, metadata Metadata, coverPath string) error {
@@ -46,18 +54,31 @@ func EmbedMetadata(filepath string, metadata Metadata, coverPath string) error {
 	if metadata.Album != "" {
 		_ = cmt.Add(flacvorbis.FIELD_ALBUM, metadata.Album)
 	}
+	if metadata.AlbumArtist != "" {
+		_ = cmt.Add("ALBUMARTIST", metadata.AlbumArtist)
+	}
 	if metadata.Date != "" {
 		_ = cmt.Add(flacvorbis.FIELD_DATE, metadata.Date)
 	}
 	if metadata.TrackNumber > 0 {
 		_ = cmt.Add(flacvorbis.FIELD_TRACKNUMBER, strconv.Itoa(metadata.TrackNumber))
 	}
+	if metadata.TotalTracks > 0 {
+		_ = cmt.Add("TOTALTRACKS", strconv.Itoa(metadata.TotalTracks))
+	}
 	if metadata.DiscNumber > 0 {
 		_ = cmt.Add("DISCNUMBER", strconv.Itoa(metadata.DiscNumber))
 	}
 	if metadata.ISRC != "" {
 		_ = cmt.Add(flacvorbis.FIELD_ISRC, metadata.ISRC)
 	}
+	if metadata.Description != "" {
+		_ = cmt.Add("DESCRIPTION", metadata.Description)
+	}
+	// Lyrics is added last to keep it at the bottom
+	if metadata.Lyrics != "" {
+		_ = cmt.Add("LYRICS", metadata.Lyrics) // Or "UNSYNCEDLYRICS" for unsynced
+	}
 
 	cmtBlock := cmt.Marshal()
 	if cmtIdx < 0 {
@@ -113,6 +134,75 @@ func fileExists(path string) bool {
 	return err == nil
 }
 
+// extractYear extracts the year from a release date string
+// Handles formats: "YYYY-MM-DD", "YYYY-MM", "YYYY"
+func extractYear(releaseDate string) string {
+	if releaseDate == "" {
+		return ""
+	}
+	// Try to extract year (first 4 digits)
+	if len(releaseDate) >= 4 {
+		return releaseDate[:4]
+	}
+	return releaseDate
+}
+
+// EmbedLyricsOnly adds lyrics to a FLAC file while preserving existing metadata
+func EmbedLyricsOnly(filepath string, lyrics string) error {
+	if lyrics == "" {
+		return nil
+	}
+	f, err := flac.ParseFile(filepath)
+	if err != nil {
+		return fmt.Errorf("failed to parse FLAC file: %w", err)
+	}
+
+	var cmtIdx = -1
+	var existingCmt *flacvorbis.MetaDataBlockVorbisComment
+	for idx, block := range f.Meta {
+		if block.Type == flac.VorbisComment {
+			cmtIdx = idx
+			existingCmt, err = flacvorbis.ParseFromMetaDataBlock(*block)
+			if err != nil {
+				existingCmt = nil
+			}
+			break
+		}
+	}
+
+	// Create new comment block, preserving existing comments
+	cmt := flacvorbis.New()
+
+	// Copy existing comments except LYRICS
+	if existingCmt != nil {
+		for _, comment := range existingCmt.Comments {
+			parts := strings.SplitN(comment, "=", 2)
+			if len(parts) == 2 {
+				fieldName := strings.ToUpper(parts[0])
+				if fieldName != "LYRICS" && fieldName != "UNSYNCEDLYRICS" && fieldName != "SYNCEDLYRICS" {
+					_ = cmt.Add(parts[0], parts[1])
+				}
+			}
+		}
+	}
+
+	// Add lyrics
+	_ = cmt.Add("LYRICS", lyrics)
+
+	cmtBlock := cmt.Marshal()
+	if cmtIdx < 0 {
+		f.Meta = append(f.Meta, &cmtBlock)
+	} else {
+		f.Meta[cmtIdx] = &cmtBlock
+	}
+
+	if err := f.Save(filepath); err != nil {
+		return fmt.Errorf("failed to save FLAC file: %w", err)
+	}
+
+	return nil
+}
+
 // ReadISRCFromFile reads ISRC metadata from a FLAC file
 func ReadISRCFromFile(filepath string) (string, error) {
 	if !fileExists(filepath) {
@@ -187,3 +277,326 @@ func CheckISRCExists(outputDir string, targetISRC string) (string, bool) {
 
 	return "", false
 }
+
+// ExtractCoverArt extracts cover art from an audio file and saves it to a temporary file
+func ExtractCoverArt(filePath string) (string, error) {
+	ext := strings.ToLower(pathfilepath.Ext(filePath))
+
+	switch ext {
+	case ".mp3":
+		return extractCoverFromMp3(filePath)
+	case ".m4a", ".flac":
+		return extractCoverFromM4AOrFlac(filePath)
+	default:
+		return "", fmt.Errorf("unsupported file format: %s", ext)
+	}
+}
+
+// extractCoverFromMp3 extracts cover art from MP3 file
+func extractCoverFromMp3(filePath string) (string, error) {
+	tag, err := id3v2.Open(filePath, id3v2.Options{Parse: true})
+	if err != nil {
+		return "", fmt.Errorf("failed to open MP3 file: %w", err)
+	}
+	defer tag.Close()
+
+	pictures := tag.GetFrames(tag.CommonID("Attached picture"))
+	if len(pictures) == 0 {
+		return "", fmt.Errorf("no cover art found")
+	}
+
+	pic, ok := pictures[0].(id3v2.PictureFrame)
+	if !ok {
+		return "", fmt.Errorf("invalid picture frame")
+	}
+
+	// Create temporary file
+	tmpFile, err := os.CreateTemp("", "cover-*.jpg")
+	if err != nil {
+		return "", fmt.Errorf("failed to create temp file: %w", err)
+	}
+	defer tmpFile.Close()
+
+	if _, err := tmpFile.Write(pic.Picture); err != nil {
+		os.Remove(tmpFile.Name())
+		return "", fmt.Errorf("failed to write cover art: %w", err)
+	}
+
+	return tmpFile.Name(), nil
+}
+
+// extractCoverFromM4AOrFlac extracts cover art from M4A or FLAC file
+func extractCoverFromM4AOrFlac(filePath string) (string, error) {
+	ext := strings.ToLower(pathfilepath.Ext(filePath))
+
+	if ext == ".flac" {
+		f, err := flac.ParseFile(filePath)
+		if err != nil {
+			return "", fmt.Errorf("failed to parse FLAC file: %w", err)
+		}
+
+		for _, block := range f.Meta {
+			if block.Type == flac.Picture {
+				pic, err := flacpicture.ParseFromMetaDataBlock(*block)
+				if err != nil {
+					continue
+				}
+
+				// Create temporary file
+				tmpFile, err := os.CreateTemp("", "cover-*.jpg")
+				if err != nil {
+					return "", fmt.Errorf("failed to create temp file: %w", err)
+				}
+				defer tmpFile.Close()
+
+				if _, err := tmpFile.Write(pic.ImageData); err != nil {
+					os.Remove(tmpFile.Name())
+					return "", fmt.Errorf("failed to write cover art: %w", err)
+				}
+
+				return tmpFile.Name(), nil
+			}
+		}
+		return "", fmt.Errorf("no cover art found")
+	}
+
+	// For M4A, try to extract using ffmpeg or return empty
+	// M4A cover art should be preserved by ffmpeg during conversion
+	return "", nil
+}
+
+// ExtractLyrics extracts lyrics from an audio file
+func ExtractLyrics(filePath string) (string, error) {
+	ext := strings.ToLower(pathfilepath.Ext(filePath))
+
+	switch ext {
+	case ".mp3":
+		return extractLyricsFromMp3(filePath)
+	case ".flac":
+		return extractLyricsFromFlac(filePath)
+	case ".m4a":
+		// M4A lyrics extraction would need different approach
+		return "", nil
+	default:
+		return "", fmt.Errorf("unsupported file format: %s", ext)
+	}
+}
+
+// extractLyricsFromMp3 extracts lyrics from MP3 file
+func extractLyricsFromMp3(filePath string) (string, error) {
+	tag, err := id3v2.Open(filePath, id3v2.Options{Parse: true})
+	if err != nil {
+		return "", fmt.Errorf("failed to open MP3 file: %w", err)
+	}
+	defer tag.Close()
+
+	usltFrames := tag.GetFrames(tag.CommonID("Unsynchronised lyrics/text transcription"))
+	if len(usltFrames) == 0 {
+		fmt.Printf("[ExtractLyrics] No USLT frames found in MP3: %s\n", filePath)
+		return "", nil
+	}
+
+	uslt, ok := usltFrames[0].(id3v2.UnsynchronisedLyricsFrame)
+	if !ok {
+		fmt.Printf("[ExtractLyrics] USLT frame type assertion failed in MP3: %s\n", filePath)
+		return "", nil
+	}
+
+	if uslt.Lyrics == "" {
+		fmt.Printf("[ExtractLyrics] USLT frame has empty lyrics in MP3: %s\n", filePath)
+		return "", nil
+	}
+
+	fmt.Printf("[ExtractLyrics] Successfully extracted lyrics from MP3: %s (%d characters)\n", filePath, len(uslt.Lyrics))
+	return uslt.Lyrics, nil
+}
+
+// extractLyricsFromFlac extracts lyrics from FLAC file
+func extractLyricsFromFlac(filePath string) (string, error) {
+	f, err := flac.ParseFile(filePath)
+	if err != nil {
+		return "", fmt.Errorf("failed to parse FLAC file: %w", err)
+	}
+
+	for _, block := range f.Meta {
+		if block.Type == flac.VorbisComment {
+			cmt, err := flacvorbis.ParseFromMetaDataBlock(*block)
+			if err != nil {
+				continue
+			}
+
+			// Search through comments for lyrics
+			for _, comment := range cmt.Comments {
+				parts := strings.SplitN(comment, "=", 2)
+				if len(parts) == 2 {
+					fieldName := strings.ToUpper(parts[0])
+					if fieldName == "LYRICS" || fieldName == "UNSYNCEDLYRICS" {
+						lyrics := parts[1]
+						fmt.Printf("[ExtractLyrics] Successfully extracted lyrics from FLAC: %s (%d characters)\n", filePath, len(lyrics))
+						return lyrics, nil
+					}
+				}
+			}
+		}
+	}
+
+	fmt.Printf("[ExtractLyrics] No lyrics found in FLAC: %s\n", filePath)
+	return "", nil
+}
+
+// EmbedCoverArtOnly embeds cover art into an audio file
+func EmbedCoverArtOnly(filePath string, coverPath string) error {
+	if coverPath == "" || !fileExists(coverPath) {
+		return nil
+	}
+
+	ext := strings.ToLower(pathfilepath.Ext(filePath))
+
+	switch ext {
+	case ".mp3":
+		return embedCoverToMp3(filePath, coverPath)
+	case ".m4a":
+		// M4A cover art should be handled by ffmpeg during conversion
+		// If not, we can try to embed using atomicparsley or similar tool
+		// For now, return nil as ffmpeg should handle it
+		return nil
+	default:
+		return fmt.Errorf("unsupported file format: %s", ext)
+	}
+}
+
+// embedCoverToMp3 embeds cover art into MP3 file
+func embedCoverToMp3(filePath string, coverPath string) error {
+	tag, err := id3v2.Open(filePath, id3v2.Options{Parse: true})
+	if err != nil {
+		return fmt.Errorf("failed to open MP3 file: %w", err)
+	}
+	defer tag.Close()
+
+	// Remove existing cover art
+	tag.DeleteFrames(tag.CommonID("Attached picture"))
+
+	// Read cover art
+	artwork, err := os.ReadFile(coverPath)
+	if err != nil {
+		return fmt.Errorf("failed to read cover art: %w", err)
+	}
+
+	// Add new cover art
+	pic := id3v2.PictureFrame{
+		Encoding:    id3v2.EncodingUTF8,
+		MimeType:    "image/jpeg",
+		PictureType: id3v2.PTFrontCover,
+		Description: "Front cover",
+		Picture:     artwork,
+	}
+	tag.AddAttachedPicture(pic)
+
+	if err := tag.Save(); err != nil {
+		return fmt.Errorf("failed to save MP3 tags: %w", err)
+	}
+
+	return nil
+}
+
+// EmbedLyricsOnlyMP3 adds lyrics to an MP3 file using ID3v2 USLT frame
+func EmbedLyricsOnlyMP3(filepath string, lyrics string) error {
+	if lyrics == "" {
+		return nil
+	}
+
+	tag, err := id3v2.Open(filepath, id3v2.Options{Parse: true})
+	if err != nil {
+		return fmt.Errorf("failed to open MP3 file: %w", err)
+	}
+	defer tag.Close()
+
+	// Remove existing USLT frames
+	tag.DeleteFrames(tag.CommonID("Unsynchronised lyrics/text transcription"))
+
+	// Add new USLT frame with lyrics
+	// Use UTF-8 encoding for better compatibility with AIMP and other players
+	usltFrame := id3v2.UnsynchronisedLyricsFrame{
+		Encoding:          id3v2.EncodingUTF8, // Use UTF-8 instead of default encoding
+		Language:          "eng",
+		ContentDescriptor: "", // Empty descriptor for better compatibility
+		Lyrics:            lyrics,
+	}
+	tag.AddUnsynchronisedLyricsFrame(usltFrame)
+
+	if err := tag.Save(); err != nil {
+		return fmt.Errorf("failed to save MP3 tags: %w", err)
+	}
+
+	return nil
+}
+
+// embedLyricsToM4A adds lyrics to an M4A file using ffmpeg
+func embedLyricsToM4A(filepath string, lyrics string) error {
+	// Use ffmpeg to embed lyrics into M4A file
+	// M4A uses iTunes metadata format with atom '©lyr' for lyrics
+	ffmpegPath, err := GetFFmpegPath()
+	if err != nil {
+		return fmt.Errorf("ffmpeg not found: %w", err)
+	}
+
+	// Create temporary output file with proper extension so ffmpeg can detect format
+	tmpOutputFile := strings.TrimSuffix(filepath, pathfilepath.Ext(filepath)) + ".tmp" + pathfilepath.Ext(filepath)
+	defer func() {
+		// Only remove if file still exists (rename might have failed)
+		if _, err := os.Stat(tmpOutputFile); err == nil {
+			os.Remove(tmpOutputFile)
+		}
+	}()
+
+	// Use ffmpeg to copy file and add lyrics metadata
+	// For M4A, we need to use the correct metadata tag format and specify output format
+	// Use -f ipod for M4A format (iPod format is compatible with M4A)
+	cmd := exec.Command(ffmpegPath,
+		"-i", filepath,
+		"-map", "0",
+		"-map_metadata", "0",
+		"-metadata", "lyrics-eng="+lyrics,
+		"-metadata", "lyrics="+lyrics,
+		"-codec", "copy",
+		"-f", "ipod", // Explicitly specify M4A/iPod format
+		"-y", // Overwrite
+		tmpOutputFile,
+	)
+
+	// Hide console window on Windows
+	setHideWindow(cmd)
+
+	output, err := cmd.CombinedOutput()
+	if err != nil {
+		fmt.Printf("[FFmpeg] Error embedding lyrics to M4A: %s\n", string(output))
+		return fmt.Errorf("ffmpeg failed to embed lyrics: %s - %w", string(output), err)
+	}
+
+	// Replace original file with new file
+	if err := os.Rename(tmpOutputFile, filepath); err != nil {
+		return fmt.Errorf("failed to replace original file: %w", err)
+	}
+
+	fmt.Printf("[FFmpeg] Lyrics embedded to M4A successfully: %d characters\n", len(lyrics))
+	return nil
+}
+
+// EmbedLyricsOnlyUniversal embeds lyrics to MP3, FLAC, or M4A file
+func EmbedLyricsOnlyUniversal(filepath string, lyrics string) error {
+	if lyrics == "" {
+		return nil
+	}
+
+	ext := strings.ToLower(pathfilepath.Ext(filepath))
+	switch ext {
+	case ".mp3":
+		return EmbedLyricsOnlyMP3(filepath, lyrics)
+	case ".flac":
+		return EmbedLyricsOnly(filepath, lyrics)
+	case ".m4a":
+		return embedLyricsToM4A(filepath, lyrics)
+	default:
+		return fmt.Errorf("unsupported file format for lyrics embedding: %s", ext)
+	}
+}

backend/progress.go

@@ -264,6 +264,13 @@ func UpdateItemProgress(id string, progress, speed float64) {
 	}
 }
 
+// GetCurrentItemID returns the ID of the currently downloading item
+func GetCurrentItemID() string {
+	currentItemLock.RLock()
+	defer currentItemLock.RUnlock()
+	return currentItemID
+}
+
 // CompleteDownloadItem marks an item as completed
 func CompleteDownloadItem(id, filePath string, finalSize float64) {
 	downloadQueueLock.Lock()

backend/qobuz.go

@@ -8,6 +8,8 @@ import (
 	"net/http"
 	"os"
 	"path/filepath"
+	"regexp"
+	"strings"
 	"time"
 )
 
@@ -91,8 +93,23 @@ func (q *QobuzDownloader) SearchByISRC(isrc string) (*QobuzTrack, error) {
 	}
 
 	var searchResp QobuzSearchResponse
-	if err := json.NewDecoder(resp.Body).Decode(&searchResp); err != nil {
-		return nil, fmt.Errorf("failed to decode response: %w", err)
+	// Read body first to handle encoding issues
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return nil, fmt.Errorf("failed to read response body: %w", err)
+	}
+
+	if len(body) == 0 {
+		return nil, fmt.Errorf("API returned empty response")
+	}
+
+	if err := json.Unmarshal(body, &searchResp); err != nil {
+		// Truncate body for error message (max 200 chars)
+		bodyStr := string(body)
+		if len(bodyStr) > 200 {
+			bodyStr = bodyStr[:200] + "..."
+		}
+		return nil, fmt.Errorf("failed to decode response: %w (response: %s)", err, bodyStr)
 	}
 
 	if len(searchResp.Tracks.Items) == 0 {
@@ -105,15 +122,20 @@ func (q *QobuzDownloader) SearchByISRC(isrc string) (*QobuzTrack, error) {
 func (q *QobuzDownloader) GetDownloadURL(trackID int64, quality string) (string, error) {
 	// Map quality to Qobuz quality code
 	// Qobuz uses: 5 (MP3 320), 6 (FLAC 16-bit), 7 (FLAC 24-bit), 27 (Hi-Res)
-	qualityCode := "27" // Default to Hi-Res
+	qualityCode := quality // Use the provided quality parameter
+	if qualityCode == "" {
+		qualityCode = "6" // Default to FLAC 16-bit if not specified
+	}
 
-	fmt.Printf("Getting download URL for track ID: %d\n", trackID)
+	fmt.Printf("Getting download URL for track ID: %d with requested quality: %s\n", trackID, qualityCode)
+	fmt.Printf("Quality codes: 6=FLAC 16-bit, 7=FLAC 24-bit, 27=Hi-Res\n")
 
 	// Decode base64 API URLs
 	primaryBase, _ := base64.StdEncoding.DecodeString("aHR0cHM6Ly9kYWIueWVldC5zdS9hcGkvc3RyZWFtP3RyYWNrSWQ9")
 
 	// Try primary API first
 	primaryURL := fmt.Sprintf("%s%d&quality=%s", string(primaryBase), trackID, qualityCode)
+	fmt.Printf("Qobuz API URL: %s\n", primaryURL)
 
 	resp, err := q.client.Get(primaryURL)
 	if err == nil && resp.StatusCode == 200 {
@@ -149,12 +171,25 @@ func (q *QobuzDownloader) GetDownloadURL(trackID int64, quality string) (string,
 		return "", fmt.Errorf("API returned status %d", resp.StatusCode)
 	}
 
-	body, _ := io.ReadAll(resp.Body)
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return "", fmt.Errorf("failed to read response body: %w", err)
+	}
+
+	if len(body) == 0 {
+		return "", fmt.Errorf("API returned empty response")
+	}
+
 	fmt.Printf("Fallback API response: %s\n", string(body))
 
 	var streamResp QobuzStreamResponse
 	if err := json.Unmarshal(body, &streamResp); err != nil {
-		return "", fmt.Errorf("failed to decode response: %w", err)
+		// Truncate body for error message (max 200 chars)
+		bodyStr := string(body)
+		if len(bodyStr) > 200 {
+			bodyStr = bodyStr[:200] + "..."
+		}
+		return "", fmt.Errorf("failed to decode response: %w (response: %s)", err, bodyStr)
 	}
 
 	if streamResp.URL == "" {
@@ -167,7 +202,13 @@ func (q *QobuzDownloader) GetDownloadURL(trackID int64, quality string) (string,
 
 func (q *QobuzDownloader) DownloadFile(url, filepath string) error {
 	fmt.Println("Starting file download...")
-	resp, err := q.client.Get(url)
+	// Use a separate client with a longer timeout. The default client's 60s limit
+	// causes downloads to fail on slow connections or for large Hi-Res files.
+	downloadClient := &http.Client{
+		Timeout: 5 * time.Minute, // 5 minutes for large files
+	}
+
+	resp, err := downloadClient.Get(url)
 	if err != nil {
 		return fmt.Errorf("failed to download file: %w", err)
 	}
@@ -225,7 +266,29 @@ func (q *QobuzDownloader) DownloadCoverArt(coverURL, filepath string) error {
 func buildQobuzFilename(title, artist string, trackNumber int, format string, includeTrackNumber bool, position int, useAlbumTrackNumber bool) string {
 	var filename string
 
-	// Build base filename based on format
+	// Determine track number to use
+	numberToUse := position
+	if useAlbumTrackNumber && trackNumber > 0 {
+		numberToUse = trackNumber
+	}
+
+	// Check if format is a template (contains {})
+	if strings.Contains(format, "{") {
+		filename = format
+		filename = strings.ReplaceAll(filename, "{title}", title)
+		filename = strings.ReplaceAll(filename, "{artist}", artist)
+
+		// Handle track number - if numberToUse is 0, remove {track} and surrounding separators
+		if numberToUse > 0 {
+			filename = strings.ReplaceAll(filename, "{track}", fmt.Sprintf("%02d", numberToUse))
+		} else {
+			// Remove {track} with common separators
+			filename = regexp.MustCompile(`\{track\}\.\s*`).ReplaceAllString(filename, "")
+			filename = regexp.MustCompile(`\{track\}\s*-\s*`).ReplaceAllString(filename, "")
+			filename = regexp.MustCompile(`\{track\}\s*`).ReplaceAllString(filename, "")
+		}
+	} else {
+		// Legacy format support
 		switch format {
 		case "artist-title":
 			filename = fmt.Sprintf("%s - %s", artist, title)
@@ -235,20 +298,16 @@ func buildQobuzFilename(title, artist string, trackNumber int, format string, in
 			filename = fmt.Sprintf("%s - %s", title, artist)
 		}
 
-	// Add track number prefix if enabled
+		// Add track number prefix if enabled (legacy behavior)
 		if includeTrackNumber && position > 0 {
-		// Use album track number if in album folder structure, otherwise use playlist position
-		numberToUse := position
-		if useAlbumTrackNumber && trackNumber > 0 {
-			numberToUse = trackNumber
-		}
 			filename = fmt.Sprintf("%02d. %s", numberToUse, filename)
 		}
+	}
 
 	return filename + ".flac"
 }
 
-func (q *QobuzDownloader) DownloadByISRC(isrc, outputDir, quality, filenameFormat string, includeTrackNumber bool, position int, spotifyTrackName, spotifyArtistName, spotifyAlbumName string, useAlbumTrackNumber bool) (string, error) {
+func (q *QobuzDownloader) DownloadByISRC(isrc, outputDir, quality, filenameFormat string, includeTrackNumber bool, position int, spotifyTrackName, spotifyArtistName, spotifyAlbumName, spotifyAlbumArtist, spotifyReleaseDate string, useAlbumTrackNumber bool, spotifyCoverURL string, embedMaxQualityCover bool, spotifyTrackNumber, spotifyDiscNumber, spotifyTotalTracks int) (string, error) {
 	fmt.Printf("Fetching track info for ISRC: %s\n", isrc)
 
 	// Create output directory if it doesn't exist
@@ -263,29 +322,11 @@ func (q *QobuzDownloader) DownloadByISRC(isrc, outputDir, quality, filenameForma
 		return "", err
 	}
 
-	// Use Spotify metadata if provided, otherwise fallback to Qobuz metadata
+	// All metadata from Spotify - no fallback to Qobuz
 	artists := spotifyArtistName
 	trackTitle := spotifyTrackName
 	albumTitle := spotifyAlbumName
 
-	if artists == "" {
-		artists = track.Performer.Name
-		if track.Album.Artist.Name != "" {
-			artists = track.Album.Artist.Name
-		}
-	}
-
-	if trackTitle == "" {
-		trackTitle = track.Title
-		if track.Version != "" && track.Version != "null" {
-			trackTitle = fmt.Sprintf("%s (%s)", track.Title, track.Version)
-		}
-	}
-
-	if albumTitle == "" {
-		albumTitle = track.Album.Title
-	}
-
 	fmt.Printf("Found track: %s - %s\n", artists, trackTitle)
 	fmt.Printf("Album: %s\n", albumTitle)
 
@@ -315,14 +356,14 @@ func (q *QobuzDownloader) DownloadByISRC(isrc, outputDir, quality, filenameForma
 	safeArtist := sanitizeFilename(artists)
 	safeTitle := sanitizeFilename(trackTitle)
 
-	// Check if file with same ISRC already exists
-	if existingFile, exists := CheckISRCExists(outputDir, track.ISRC); exists {
-		fmt.Printf("File with ISRC %s already exists: %s\n", track.ISRC, existingFile)
+	// Check if file with same ISRC already exists (use Spotify ISRC)
+	if existingFile, exists := CheckISRCExists(outputDir, isrc); exists {
+		fmt.Printf("File with ISRC %s already exists: %s\n", isrc, existingFile)
 		return "EXISTS:" + existingFile, nil
 	}
 
-	// Build filename based on format settings
-	filename := buildQobuzFilename(safeTitle, safeArtist, track.TrackNumber, filenameFormat, includeTrackNumber, position, useAlbumTrackNumber)
+	// Build filename based on format settings (use Spotify track number)
+	filename := buildQobuzFilename(safeTitle, safeArtist, spotifyTrackNumber, filenameFormat, includeTrackNumber, position, useAlbumTrackNumber)
 	filepath := filepath.Join(outputDir, filename)
 
 	if fileInfo, err := os.Stat(filepath); err == nil && fileInfo.Size() > 0 {
@@ -338,41 +379,39 @@ func (q *QobuzDownloader) DownloadByISRC(isrc, outputDir, quality, filenameForma
 	fmt.Printf("Downloaded: %s\n", filepath)
 
 	coverPath := ""
-	if track.Album.Image.Large != "" {
+	// Use Spotify cover URL (with max resolution if enabled) - all metadata from Spotify
+	if spotifyCoverURL != "" {
 		coverPath = filepath + ".cover.jpg"
-		fmt.Println("Downloading cover art...")
-		if err := q.DownloadCoverArt(track.Album.Image.Large, coverPath); err != nil {
-			fmt.Printf("Warning: Failed to download cover art: %v\n", err)
+		coverClient := NewCoverClient()
+		if err := coverClient.DownloadCoverToPath(spotifyCoverURL, coverPath, embedMaxQualityCover); err != nil {
+			fmt.Printf("Warning: Failed to download Spotify cover: %v\n", err)
+			coverPath = ""
 		} else {
 			defer os.Remove(coverPath)
+			fmt.Println("Spotify cover downloaded")
 		}
 	}
 
 	fmt.Println("Embedding metadata and cover art...")
 
-	releaseYear := ""
-	if len(track.ReleaseDateOriginal) >= 4 {
-		releaseYear = track.ReleaseDateOriginal[:4]
-	}
-
-	// Use album track number if in album folder structure, otherwise use playlist position
-	trackNumberToEmbed := 0
-	if position > 0 {
-		if useAlbumTrackNumber && track.TrackNumber > 0 {
-			trackNumberToEmbed = track.TrackNumber
-		} else {
-			trackNumberToEmbed = position
-		}
+	// Determine track number to embed - ALL from Spotify
+	trackNumberToEmbed := spotifyTrackNumber
+	if position > 0 && !useAlbumTrackNumber {
+		trackNumberToEmbed = position // Use playlist position
 	}
 
+	// ALL metadata from Spotify
 	metadata := Metadata{
 		Title:       trackTitle,
 		Artist:      artists,
 		Album:       albumTitle,
-		Date:        releaseYear,
+		AlbumArtist: spotifyAlbumArtist,
+		Date:        spotifyReleaseDate, // Recorded date (full date YYYY-MM-DD)
 		TrackNumber: trackNumberToEmbed,
-		DiscNumber:  track.MediaNumber,
-		ISRC:        track.ISRC,
+		TotalTracks: spotifyTotalTracks, // Total tracks in album from Spotify
+		DiscNumber:  spotifyDiscNumber,  // Disc number from Spotify
+		ISRC:        isrc,               // ISRC from Spotify (passed as parameter)
+		Description: "https://github.com/afkarxyz/SpotiFLAC",
 	}
 
 	if err := EmbedMetadata(filepath, metadata, coverPath); err != nil {

backend/songlink.go

@@ -4,6 +4,7 @@ import (
 	"encoding/base64"
 	"encoding/json"
 	"fmt"
+	"io"
 	"net/http"
 	"net/url"
 	"time"
@@ -18,7 +19,6 @@ type SongLinkClient struct {
 
 type SongLinkURLs struct {
 	TidalURL  string `json:"tidal_url"`
-	DeezerURL string `json:"deezer_url"`
 	AmazonURL string `json:"amazon_url"`
 }
 
@@ -26,11 +26,9 @@ type SongLinkURLs struct {
 type TrackAvailability struct {
 	SpotifyID string `json:"spotify_id"`
 	Tidal     bool   `json:"tidal"`
-	Deezer    bool   `json:"deezer"`
 	Amazon    bool   `json:"amazon"`
 	Qobuz     bool   `json:"qobuz"`
 	TidalURL  string `json:"tidal_url,omitempty"`
-	DeezerURL string `json:"deezer_url,omitempty"`
 	AmazonURL string `json:"amazon_url,omitempty"`
 	QobuzURL  string `json:"qobuz_url,omitempty"`
 }
@@ -126,8 +124,23 @@ func (s *SongLinkClient) GetAllURLsFromSpotify(spotifyTrackID string) (*SongLink
 			URL string `json:"url"`
 		} `json:"linksByPlatform"`
 	}
-	if err := json.NewDecoder(resp.Body).Decode(&songLinkResp); err != nil {
-		return nil, fmt.Errorf("failed to decode response: %w", err)
+	// Read body first to handle encoding issues
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return nil, fmt.Errorf("failed to read response body: %w", err)
+	}
+
+	if len(body) == 0 {
+		return nil, fmt.Errorf("API returned empty response")
+	}
+
+	if err := json.Unmarshal(body, &songLinkResp); err != nil {
+		// Truncate body for error message (max 200 chars)
+		bodyStr := string(body)
+		if len(bodyStr) > 200 {
+			bodyStr = bodyStr[:200] + "..."
+		}
+		return nil, fmt.Errorf("failed to decode response: %w (response: %s)", err, bodyStr)
 	}
 
 	urls := &SongLinkURLs{}
@@ -138,12 +151,6 @@ func (s *SongLinkClient) GetAllURLsFromSpotify(spotifyTrackID string) (*SongLink
 		fmt.Printf("✓ Tidal URL found\n")
 	}
 
-	// Extract Deezer URL
-	if deezerLink, ok := songLinkResp.LinksByPlatform["deezer"]; ok && deezerLink.URL != "" {
-		urls.DeezerURL = deezerLink.URL
-		fmt.Printf("✓ Deezer URL found\n")
-	}
-
 	// Extract Amazon URL
 	if amazonLink, ok := songLinkResp.LinksByPlatform["amazonMusic"]; ok && amazonLink.URL != "" {
 		amazonURL := amazonLink.URL
@@ -155,7 +162,7 @@ func (s *SongLinkClient) GetAllURLsFromSpotify(spotifyTrackID string) (*SongLink
 	}
 
 	// Check if at least one URL was found
-	if urls.TidalURL == "" && urls.DeezerURL == "" && urls.AmazonURL == "" {
+	if urls.TidalURL == "" && urls.AmazonURL == "" {
 		return nil, fmt.Errorf("no streaming URLs found")
 	}
 
@@ -245,8 +252,23 @@ func (s *SongLinkClient) CheckTrackAvailability(spotifyTrackID string, isrc stri
 			URL string `json:"url"`
 		} `json:"linksByPlatform"`
 	}
-	if err := json.NewDecoder(resp.Body).Decode(&songLinkResp); err != nil {
-		return nil, fmt.Errorf("failed to decode response: %w", err)
+	// Read body first to handle encoding issues
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return nil, fmt.Errorf("failed to read response body: %w", err)
+	}
+
+	if len(body) == 0 {
+		return nil, fmt.Errorf("API returned empty response")
+	}
+
+	if err := json.Unmarshal(body, &songLinkResp); err != nil {
+		// Truncate body for error message (max 200 chars)
+		bodyStr := string(body)
+		if len(bodyStr) > 200 {
+			bodyStr = bodyStr[:200] + "..."
+		}
+		return nil, fmt.Errorf("failed to decode response: %w (response: %s)", err, bodyStr)
 	}
 
 	availability := &TrackAvailability{
@@ -259,12 +281,6 @@ func (s *SongLinkClient) CheckTrackAvailability(spotifyTrackID string, isrc stri
 		availability.TidalURL = tidalLink.URL
 	}
 
-	// Check Deezer
-	if deezerLink, ok := songLinkResp.LinksByPlatform["deezer"]; ok && deezerLink.URL != "" {
-		availability.Deezer = true
-		availability.DeezerURL = deezerLink.URL
-	}
-
 	// Check Amazon
 	if amazonLink, ok := songLinkResp.LinksByPlatform["amazonMusic"]; ok && amazonLink.URL != "" {
 		availability.Amazon = true

backend/spotify_metadata.go

@@ -57,16 +57,19 @@ func NewSpotifyMetadataClient() *SpotifyMetadataClient {
 
 // TrackMetadata mirrors the filtered track payload returned by the Python script.
 type TrackMetadata struct {
+	SpotifyID   string `json:"spotify_id,omitempty"`
 	Artists     string `json:"artists"`
 	Name        string `json:"name"`
 	AlbumName   string `json:"album_name"`
+	AlbumArtist string `json:"album_artist,omitempty"`
 	DurationMS  int    `json:"duration_ms"`
 	Images      string `json:"images"`
 	ReleaseDate string `json:"release_date"`
 	TrackNumber int    `json:"track_number"`
+	TotalTracks int    `json:"total_tracks,omitempty"`
+	DiscNumber  int    `json:"disc_number,omitempty"`
 	ExternalURL string `json:"external_urls"`
 	ISRC        string `json:"isrc"`
-	SpotifyID   string `json:"spotify_id,omitempty"`
 }
 
 // ArtistSimple holds basic artist info for clickable artists
@@ -78,17 +81,20 @@ type ArtistSimple struct {
 
 // AlbumTrackMetadata holds per-track info for album / playlist formatting.
 type AlbumTrackMetadata struct {
+	SpotifyID   string         `json:"spotify_id,omitempty"`
 	Artists     string         `json:"artists"`
 	Name        string         `json:"name"`
 	AlbumName   string         `json:"album_name"`
+	AlbumArtist string         `json:"album_artist,omitempty"`
 	DurationMS  int            `json:"duration_ms"`
 	Images      string         `json:"images"`
 	ReleaseDate string         `json:"release_date"`
 	TrackNumber int            `json:"track_number"`
+	TotalTracks int            `json:"total_tracks,omitempty"`
+	DiscNumber  int            `json:"disc_number,omitempty"`
 	ExternalURL string         `json:"external_urls"`
 	ISRC        string         `json:"isrc"`
 	AlbumType   string         `json:"album_type,omitempty"`
-	SpotifyID   string         `json:"spotify_id,omitempty"`
 	AlbumID     string         `json:"album_id,omitempty"`
 	AlbumURL    string         `json:"album_url,omitempty"`
 	ArtistID    string         `json:"artist_id,omitempty"`
@@ -227,6 +233,7 @@ type trackSimplified struct {
 	Name        string      `json:"name"`
 	DurationMS  int         `json:"duration_ms"`
 	TrackNumber int         `json:"track_number"`
+	DiscNumber  int         `json:"disc_number"`
 	ExternalURL externalURL `json:"external_urls"`
 	Artists     []artist    `json:"artists"`
 }
@@ -236,6 +243,7 @@ type trackFull struct {
 	Name        string          `json:"name"`
 	DurationMS  int             `json:"duration_ms"`
 	TrackNumber int             `json:"track_number"`
+	DiscNumber  int             `json:"disc_number"`
 	ExternalURL externalURL     `json:"external_urls"`
 	ExternalID  externalID      `json:"external_ids"`
 	Album       albumSimplified `json:"album"`
@@ -502,16 +510,19 @@ func (c *SpotifyMetadataClient) formatPlaylistData(raw *playlistRaw) PlaylistRes
 			})
 		}
 		tracks = append(tracks, AlbumTrackMetadata{
+			SpotifyID:   item.Track.ID,
 			Artists:     joinArtists(item.Track.Artists),
 			Name:        item.Track.Name,
 			AlbumName:   item.Track.Album.Name,
+			AlbumArtist: joinArtists(item.Track.Album.Artists),
 			DurationMS:  item.Track.DurationMS,
 			Images:      firstNonEmpty(firstImageURL(item.Track.Album.Images), info.Owner.Images),
 			ReleaseDate: item.Track.Album.ReleaseDate,
 			TrackNumber: item.Track.TrackNumber,
+			TotalTracks: item.Track.Album.TotalTracks,
+			DiscNumber:  item.Track.DiscNumber,
 			ExternalURL: item.Track.ExternalURL.Spotify,
 			ISRC:        item.Track.ExternalID.ISRC,
-			SpotifyID:   item.Track.ID,
 			AlbumID:     item.Track.Album.ID,
 			AlbumURL:    item.Track.Album.ExternalURL.Spotify,
 			ArtistID:    artistID,
@@ -551,16 +562,19 @@ func (c *SpotifyMetadataClient) formatAlbumData(ctx context.Context, raw *albumR
 	for _, item := range raw.Data.Tracks.Items {
 		isrc := c.fetchTrackISRC(ctx, item.ID, raw.Token, cache)
 		tracks = append(tracks, AlbumTrackMetadata{
+			SpotifyID:   item.ID,
 			Artists:     joinArtists(item.Artists),
 			Name:        item.Name,
 			AlbumName:   raw.Data.Name,
+			AlbumArtist: joinArtists(raw.Data.Artists),
 			DurationMS:  item.DurationMS,
 			Images:      albumImage,
 			ReleaseDate: raw.Data.ReleaseDate,
 			TrackNumber: item.TrackNumber,
+			TotalTracks: raw.Data.TotalTracks,
+			DiscNumber:  item.DiscNumber,
 			ExternalURL: item.ExternalURL.Spotify,
 			ISRC:        isrc,
-			SpotifyID:   item.ID,
 		})
 	}
 
@@ -629,17 +643,20 @@ func (c *SpotifyMetadataClient) formatArtistDiscographyData(ctx context.Context,
 				})
 			}
 			allTracks = append(allTracks, AlbumTrackMetadata{
+				SpotifyID:   tr.ID,
 				Artists:     joinArtists(tr.Artists),
 				Name:        tr.Name,
 				AlbumName:   alb.Name,
+				AlbumArtist: joinArtists(alb.Artists),
 				AlbumType:   alb.AlbumType,
 				DurationMS:  tr.DurationMS,
 				Images:      albumImage,
 				ReleaseDate: alb.ReleaseDate,
 				TrackNumber: tr.TrackNumber,
+				TotalTracks: alb.TotalTracks,
+				DiscNumber:  tr.DiscNumber,
 				ExternalURL: tr.ExternalURL.Spotify,
 				ISRC:        isrc,
-				SpotifyID:   tr.ID,
 				AlbumID:     alb.ID,
 				AlbumURL:    alb.ExternalURL.Spotify,
 				ArtistID:    artistID,
@@ -676,16 +693,19 @@ func formatTrackData(raw *trackFull) TrackResponse {
 	}
 	return TrackResponse{
 		Track: TrackMetadata{
+			SpotifyID:   raw.ID,
 			Artists:     joinArtists(raw.Artists),
 			Name:        raw.Name,
 			AlbumName:   raw.Album.Name,
+			AlbumArtist: joinArtists(raw.Album.Artists),
 			DurationMS:  raw.DurationMS,
 			Images:      firstImageURL(raw.Album.Images),
 			ReleaseDate: raw.Album.ReleaseDate,
 			TrackNumber: raw.TrackNumber,
+			TotalTracks: raw.Album.TotalTracks,
+			DiscNumber:  raw.DiscNumber,
 			ExternalURL: raw.ExternalURL.Spotify,
 			ISRC:        raw.ExternalID.ISRC,
-			SpotifyID:   raw.ID,
 		},
 	}
 }

frontend/index.html

@@ -6,7 +6,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <link rel="preconnect" href="https://fonts.googleapis.com">
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
-    <link href="https://fonts.googleapis.com/css2?family=DM+Sans:wght@300..800&family=Google+Sans+Code:ital,wght@0,300..800;1,300..800&family=Google+Sans+Flex:opsz,wght@6..144,1..1000&family=Inter:wght@300..800&family=Manrope:wght@300..800&family=Plus+Jakarta+Sans:wght@300..800&family=Poppins:wght@300;400;500;600;700;800&family=Roboto:wght@300;400;500;700;900&family=Space+Grotesk:wght@300..700&display=swap" rel="stylesheet">
+    <link href="https://fonts.googleapis.com/css2?family=DM+Sans:wght@300..800&family=Figtree:wght@300..900&family=Geist:wght@100..900&family=Google+Sans+Code:ital,wght@0,300..800;1,300..800&family=Google+Sans+Flex:opsz,wght@6..144,1..1000&family=Inter:wght@300..800&family=JetBrains+Mono:ital,wght@0,100..800;1,100..800&family=Manrope:wght@300..800&family=Noto+Sans:wght@100..900&family=Nunito+Sans:opsz,wght@6..12,200..1000&family=Outfit:wght@100..900&family=Plus+Jakarta+Sans:wght@300..800&family=Poppins:wght@300;400;500;600;700;800&family=Public+Sans:ital,wght@0,100..900;1,100..900&family=Raleway:wght@100..900&family=Roboto:wght@300;400;500;700;900&family=Space+Grotesk:wght@300..700&display=swap" rel="stylesheet">
     <title>SpotiFLAC</title>
   </head>
   <body>

frontend/package.json

@@ -21,34 +21,36 @@
     "@radix-ui/react-scroll-area": "^1.2.10",
     "@radix-ui/react-select": "^2.2.6",
     "@radix-ui/react-slot": "^1.2.4",
-    "@radix-ui/react-switch": "^1.1.3",
+    "@radix-ui/react-switch": "^1.2.6",
     "@radix-ui/react-tabs": "^1.1.13",
+    "@radix-ui/react-toggle": "^1.1.10",
+    "@radix-ui/react-toggle-group": "^1.1.11",
     "@radix-ui/react-tooltip": "^1.2.8",
-    "@tailwindcss/vite": "^4.1.17",
+    "@tailwindcss/vite": "^4.1.18",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
-    "lucide-react": "^0.555.0",
+    "lucide-react": "^0.561.0",
     "next-themes": "^0.4.6",
-    "react": "^19.2.0",
-    "react-dom": "^19.2.0",
+    "react": "^19.2.3",
+    "react-dom": "^19.2.3",
     "sonner": "^2.0.7",
     "tailwind-merge": "^3.4.0",
-    "tailwindcss": "^4.1.17"
+    "tailwindcss": "^4.1.18"
   },
   "devDependencies": {
-    "@eslint/js": "^9.39.1",
-    "@types/node": "^24.10.1",
+    "@eslint/js": "^9.39.2",
+    "@types/node": "^25.0.2",
     "@types/react": "^19.2.7",
     "@types/react-dom": "^19.2.3",
-    "@vitejs/plugin-react": "^5.1.1",
-    "eslint": "^9.39.1",
+    "@vitejs/plugin-react": "^5.1.2",
+    "eslint": "^9.39.2",
     "eslint-plugin-react-hooks": "^7.0.1",
     "eslint-plugin-react-refresh": "^0.4.24",
     "globals": "^16.5.0",
     "sharp": "^0.34.5",
     "tw-animate-css": "^1.4.0",
     "typescript": "~5.9.3",
-    "typescript-eslint": "^8.48.0",
-    "vite": "^7.2.6"
+    "typescript-eslint": "^8.49.0",
+    "vite": "^7.2.7"
   }
 }

frontend/package.json.md5

@@ -1 +1 @@
-b7a549e463d5f6a2fad25f5ce939cdd7
+d4b3974abd992c8ff941c6fde9f62062

frontend/src/App.tsx

@@ -28,6 +28,7 @@ import { ArtistInfo } from "@/components/ArtistInfo";
 import { DownloadQueue } from "@/components/DownloadQueue";
 import { DownloadProgressToast } from "@/components/DownloadProgressToast";
 import { AudioAnalysisPage } from "@/components/AudioAnalysisPage";
+import { AudioConverterPage } from "@/components/AudioConverterPage";
 import { SettingsPage } from "@/components/SettingsPage";
 import { DebugLoggerPage } from "@/components/DebugLoggerPage";
 import type { HistoryItem } from "@/components/FetchHistory";
@@ -55,7 +56,7 @@ function App() {
   const [fetchHistory, setFetchHistory] = useState<HistoryItem[]>([]);
 
   const ITEMS_PER_PAGE = 50;
-  const CURRENT_VERSION = "6.6";
+  const CURRENT_VERSION = "6.8";
 
   const download = useDownload();
   const metadata = useMetadata();
@@ -319,22 +320,24 @@ function App() {
           skippedCovers={cover.skippedCovers}
           downloadingCoverTrack={cover.downloadingCoverTrack}
           isBulkDownloadingCovers={cover.isBulkDownloadingCovers}
+          isBulkDownloadingLyrics={lyrics.isBulkDownloadingLyrics}
           onSearchChange={handleSearchChange}
           onSortChange={setSortBy}
           onToggleTrack={toggleTrackSelection}
           onToggleSelectAll={toggleSelectAll}
           onDownloadTrack={download.handleDownloadTrack}
           onDownloadLyrics={(spotifyId, name, artists, albumName, _folderName, _isArtistDiscography, position) =>
-            lyrics.handleDownloadLyrics(spotifyId, name, artists, albumName, album_info.name, false, position)
+            lyrics.handleDownloadLyrics(spotifyId, name, artists, albumName, album_info.name, position)
           }
           onDownloadCover={(coverUrl, trackName, artistName, albumName, _folderName, _isArtistDiscography, position, trackId) =>
-            cover.handleDownloadCover(coverUrl, trackName, artistName, albumName, album_info.name, false, position, trackId)
+            cover.handleDownloadCover(coverUrl, trackName, artistName, albumName, album_info.name, position, trackId)
           }
           onCheckAvailability={availability.checkAvailability}
+          onDownloadAllLyrics={() => lyrics.handleDownloadAllLyrics(track_list, album_info.name)}
           onDownloadAllCovers={() => cover.handleDownloadAllCovers(track_list, album_info.name)}
-          onDownloadAll={() => download.handleDownloadAll(track_list, album_info.name)}
+          onDownloadAll={() => download.handleDownloadAll(track_list, undefined, true)}
           onDownloadSelected={() =>
-            download.handleDownloadSelected(selectedTracks, track_list, album_info.name)
+            download.handleDownloadSelected(selectedTracks, track_list, undefined, true)
           }
           onStopDownload={download.handleStopDownload}
           onOpenFolder={handleOpenFolder}
@@ -385,18 +388,20 @@ function App() {
           skippedCovers={cover.skippedCovers}
           downloadingCoverTrack={cover.downloadingCoverTrack}
           isBulkDownloadingCovers={cover.isBulkDownloadingCovers}
+          isBulkDownloadingLyrics={lyrics.isBulkDownloadingLyrics}
           onSearchChange={handleSearchChange}
           onSortChange={setSortBy}
           onToggleTrack={toggleTrackSelection}
           onToggleSelectAll={toggleSelectAll}
           onDownloadTrack={download.handleDownloadTrack}
           onDownloadLyrics={(spotifyId, name, artists, albumName, _folderName, _isArtistDiscography, position) =>
-            lyrics.handleDownloadLyrics(spotifyId, name, artists, albumName, playlist_info.owner.name, false, position)
+            lyrics.handleDownloadLyrics(spotifyId, name, artists, albumName, playlist_info.owner.name, position)
           }
           onDownloadCover={(coverUrl, trackName, artistName, albumName, _folderName, _isArtistDiscography, position, trackId) =>
-            cover.handleDownloadCover(coverUrl, trackName, artistName, albumName, playlist_info.owner.name, false, position, trackId)
+            cover.handleDownloadCover(coverUrl, trackName, artistName, albumName, playlist_info.owner.name, position, trackId)
           }
           onCheckAvailability={availability.checkAvailability}
+          onDownloadAllLyrics={() => lyrics.handleDownloadAllLyrics(track_list, playlist_info.owner.name)}
           onDownloadAllCovers={() => cover.handleDownloadAllCovers(track_list, playlist_info.owner.name)}
           onDownloadAll={() => download.handleDownloadAll(track_list, playlist_info.owner.name)}
           onDownloadSelected={() =>
@@ -457,22 +462,24 @@ function App() {
           skippedCovers={cover.skippedCovers}
           downloadingCoverTrack={cover.downloadingCoverTrack}
           isBulkDownloadingCovers={cover.isBulkDownloadingCovers}
+          isBulkDownloadingLyrics={lyrics.isBulkDownloadingLyrics}
           onSearchChange={handleSearchChange}
           onSortChange={setSortBy}
           onToggleTrack={toggleTrackSelection}
           onToggleSelectAll={toggleSelectAll}
           onDownloadTrack={download.handleDownloadTrack}
-          onDownloadLyrics={(spotifyId, name, artists, albumName, _folderName, isArtistDiscography, position) =>
-            lyrics.handleDownloadLyrics(spotifyId, name, artists, albumName, artist_info.name, isArtistDiscography, position)
+          onDownloadLyrics={(spotifyId, name, artists, albumName, _folderName, _isArtistDiscography, position) =>
+            lyrics.handleDownloadLyrics(spotifyId, name, artists, albumName, artist_info.name, position)
           }
-          onDownloadCover={(coverUrl, trackName, artistName, albumName, _folderName, isArtistDiscography, position, trackId) =>
-            cover.handleDownloadCover(coverUrl, trackName, artistName, albumName, artist_info.name, isArtistDiscography, position, trackId)
+          onDownloadCover={(coverUrl, trackName, artistName, albumName, _folderName, _isArtistDiscography, position, trackId) =>
+            cover.handleDownloadCover(coverUrl, trackName, artistName, albumName, artist_info.name, position, trackId)
           }
           onCheckAvailability={availability.checkAvailability}
-          onDownloadAllCovers={() => cover.handleDownloadAllCovers(track_list, artist_info.name, true)}
-          onDownloadAll={() => download.handleDownloadAll(track_list, artist_info.name, true)}
+          onDownloadAllLyrics={() => lyrics.handleDownloadAllLyrics(track_list, artist_info.name)}
+          onDownloadAllCovers={() => cover.handleDownloadAllCovers(track_list, artist_info.name)}
+          onDownloadAll={() => download.handleDownloadAll(track_list, artist_info.name)}
           onDownloadSelected={() =>
-            download.handleDownloadSelected(selectedTracks, track_list, artist_info.name, true)
+            download.handleDownloadSelected(selectedTracks, track_list, artist_info.name)
           }
           onStopDownload={download.handleStopDownload}
           onOpenFolder={handleOpenFolder}
@@ -506,6 +513,8 @@ function App() {
         return <DebugLoggerPage />;
       case "audio-analysis":
         return <AudioAnalysisPage />;
+      case "audio-converter":
+        return <AudioConverterPage />;
       default:
         return (
           <>

frontend/src/components/AlbumInfo.tsx

@@ -1,6 +1,6 @@
 import { Button } from "@/components/ui/button";
 import { Card, CardContent } from "@/components/ui/card";
-import { Download, FolderOpen, ImageDown } from "lucide-react";
+import { Download, FolderOpen, ImageDown, FileText } from "lucide-react";
 import { Spinner } from "@/components/ui/spinner";
 import { Tooltip, TooltipContent, TooltipTrigger } from "@/components/ui/tooltip";
 import { SearchAndSort } from "./SearchAndSort";
@@ -46,14 +46,16 @@ interface AlbumInfoProps {
   skippedCovers?: Set<string>;
   downloadingCoverTrack?: string | null;
   isBulkDownloadingCovers?: boolean;
+  isBulkDownloadingLyrics?: boolean;
   onSearchChange: (value: string) => void;
   onSortChange: (value: string) => void;
   onToggleTrack: (isrc: string) => void;
   onToggleSelectAll: (tracks: TrackMetadata[]) => void;
-  onDownloadTrack: (isrc: string, name: string, artists: string, albumName: string, spotifyId?: string) => void;
+  onDownloadTrack: (isrc: string, name: string, artists: string, albumName: string, spotifyId?: string, folderName?: string, durationMs?: number, position?: number, albumArtist?: string, releaseDate?: string, coverUrl?: string, spotifyTrackNumber?: number, spotifyDiscNumber?: number, spotifyTotalTracks?: number) => void;
   onDownloadLyrics?: (spotifyId: string, name: string, artists: string, albumName: string, folderName?: string, isArtistDiscography?: boolean, position?: number) => void;
   onDownloadCover?: (coverUrl: string, trackName: string, artistName: string, albumName: string, folderName?: string, isArtistDiscography?: boolean, position?: number, trackId?: string) => void;
   onCheckAvailability?: (spotifyId: string) => void;
+  onDownloadAllLyrics?: () => void;
   onDownloadAllCovers?: () => void;
   onDownloadAll: () => void;
   onDownloadSelected: () => void;
@@ -91,6 +93,7 @@ export function AlbumInfo({
   skippedCovers,
   downloadingCoverTrack,
   isBulkDownloadingCovers,
+  isBulkDownloadingLyrics,
   onSearchChange,
   onSortChange,
   onToggleTrack,
@@ -99,6 +102,7 @@ export function AlbumInfo({
   onDownloadLyrics,
   onDownloadCover,
   onCheckAvailability,
+  onDownloadAllLyrics,
   onDownloadAllCovers,
   onDownloadAll,
   onDownloadSelected,
@@ -170,6 +174,22 @@ export function AlbumInfo({
                     Download Selected ({selectedTracks.length})
                   </Button>
                 )}
+                {onDownloadAllLyrics && (
+                  <Tooltip>
+                    <TooltipTrigger asChild>
+                      <Button
+                        onClick={onDownloadAllLyrics}
+                        variant="outline"
+                        disabled={isBulkDownloadingLyrics}
+                      >
+                        {isBulkDownloadingLyrics ? <Spinner /> : <FileText className="h-4 w-4" />}
+                      </Button>
+                    </TooltipTrigger>
+                    <TooltipContent>
+                      <p>Download All Lyrics</p>
+                    </TooltipContent>
+                  </Tooltip>
+                )}
                 {onDownloadAllCovers && (
                   <Tooltip>
                     <TooltipTrigger asChild>

frontend/src/components/ArtistInfo.tsx

@@ -1,6 +1,6 @@
 import { Button } from "@/components/ui/button";
 import { Card, CardContent } from "@/components/ui/card";
-import { Download, FolderOpen, ImageDown } from "lucide-react";
+import { Download, FolderOpen, ImageDown, FileText } from "lucide-react";
 import { Spinner } from "@/components/ui/spinner";
 import { Tooltip, TooltipContent, TooltipTrigger } from "@/components/ui/tooltip";
 import { SearchAndSort } from "./SearchAndSort";
@@ -51,14 +51,16 @@ interface ArtistInfoProps {
   skippedCovers?: Set<string>;
   downloadingCoverTrack?: string | null;
   isBulkDownloadingCovers?: boolean;
+  isBulkDownloadingLyrics?: boolean;
   onSearchChange: (value: string) => void;
   onSortChange: (value: string) => void;
   onToggleTrack: (isrc: string) => void;
   onToggleSelectAll: (tracks: TrackMetadata[]) => void;
-  onDownloadTrack: (isrc: string, name: string, artists: string, albumName: string, spotifyId?: string) => void;
+  onDownloadTrack: (isrc: string, name: string, artists: string, albumName: string, spotifyId?: string, folderName?: string, durationMs?: number, position?: number, albumArtist?: string, releaseDate?: string, coverUrl?: string, spotifyTrackNumber?: number, spotifyDiscNumber?: number, spotifyTotalTracks?: number) => void;
   onDownloadLyrics?: (spotifyId: string, name: string, artists: string, albumName: string, folderName?: string, isArtistDiscography?: boolean, position?: number) => void;
   onDownloadCover?: (coverUrl: string, trackName: string, artistName: string, albumName: string, folderName?: string, isArtistDiscography?: boolean, position?: number, trackId?: string) => void;
   onCheckAvailability?: (spotifyId: string) => void;
+  onDownloadAllLyrics?: () => void;
   onDownloadAllCovers?: () => void;
   onDownloadAll: () => void;
   onDownloadSelected: () => void;
@@ -98,6 +100,7 @@ export function ArtistInfo({
   skippedCovers,
   downloadingCoverTrack,
   isBulkDownloadingCovers,
+  isBulkDownloadingLyrics,
   onSearchChange,
   onSortChange,
   onToggleTrack,
@@ -106,6 +109,7 @@ export function ArtistInfo({
   onDownloadLyrics,
   onDownloadCover,
   onCheckAvailability,
+  onDownloadAllLyrics,
   onDownloadAllCovers,
   onDownloadAll,
   onDownloadSelected,
@@ -212,6 +216,23 @@ export function ArtistInfo({
                   Download Selected ({selectedTracks.length})
                 </Button>
               )}
+              {onDownloadAllLyrics && (
+                <Tooltip>
+                  <TooltipTrigger asChild>
+                    <Button
+                      onClick={onDownloadAllLyrics}
+                      size="sm"
+                      variant="outline"
+                      disabled={isBulkDownloadingLyrics}
+                    >
+                      {isBulkDownloadingLyrics ? <Spinner /> : <FileText className="h-4 w-4" />}
+                    </Button>
+                  </TooltipTrigger>
+                  <TooltipContent>
+                    <p>Download All Lyrics</p>
+                  </TooltipContent>
+                </Tooltip>
+              )}
               {onDownloadAllCovers && (
                 <Tooltip>
                   <TooltipTrigger asChild>

frontend/src/components/AudioAnalysis.tsx

@@ -1,4 +1,4 @@
-import { Card, CardContent, CardHeader, CardTitle, CardDescription } from "@/components/ui/card";
+import { Card, CardContent, CardHeader } from "@/components/ui/card";
 import { Spinner } from "@/components/ui/spinner";
 import { Button } from "@/components/ui/button";
 import {
@@ -8,8 +8,7 @@ import {
   TrendingUp,
   FileAudio,
   Clock,
-  Gauge,
-  HardDrive
+  Gauge
 } from "lucide-react";
 import type { AnalysisResult } from "@/types/api";
 
@@ -18,13 +17,15 @@ interface AudioAnalysisProps {
   analyzing: boolean;
   onAnalyze?: () => void;
   showAnalyzeButton?: boolean;
+  filePath?: string;
 }
 
 export function AudioAnalysis({
   result,
   analyzing,
   onAnalyze,
-  showAnalyzeButton = true
+  showAnalyzeButton = true,
+  filePath
 }: AudioAnalysisProps) {
   if (analyzing) {
     return (
@@ -44,7 +45,7 @@ export function AudioAnalysis({
       <Card>
         <CardContent className="px-6">
           <div className="flex flex-col items-center justify-center py-8 gap-4">
-            <Activity className="h-12 w-12 text-muted-foreground/50" />
+            <Activity className="h-12 w-12 text-primary" />
             <div className="text-center space-y-2">
               <p className="font-medium">Audio Quality Analysis</p>
               <p className="text-sm text-muted-foreground">
@@ -80,114 +81,64 @@ export function AudioAnalysis({
   // Calculate Nyquist frequency (half of sample rate)
   const nyquistFreq = result.sample_rate / 2;
 
-  // Calculate approximate data size (uncompressed PCM)
-  // Formula: sample_rate * channels * (bits_per_sample / 8) * duration
-  const dataSizeBytes = result.sample_rate * result.channels * (result.bits_per_sample / 8) * result.duration;
-  const dataSizeMB = dataSizeBytes / (1024 * 1024);
-
-  const formatDataSize = (mb: number) => {
-    if (mb >= 1024) {
-      return `${(mb / 1024).toFixed(2)} GB`;
-    }
-    return `${mb.toFixed(2)} MB`;
-  };
-
   return (
     <Card>
       <CardHeader>
-        <div className="space-y-1">
-          <CardTitle className="flex items-center gap-2">
-            <Activity className="h-5 w-5" />
-            Audio Quality Analysis
-          </CardTitle>
-          <CardDescription>
-            Technical analysis of audio file properties
-          </CardDescription>
-        </div>
+        {filePath && (
+          <p className="text-sm font-mono truncate">{filePath}</p>
+        )}
       </CardHeader>
 
-      <CardContent className="px-6 space-y-6">
-
-        {/* Technical Specifications */}
-        <div className="grid grid-cols-2 gap-4">
-          <div className="space-y-1">
-            <div className="flex items-center gap-2 text-xs text-muted-foreground">
-              <Radio className="h-3 w-3" />
-              Sample Rate
+      <CardContent className="space-y-2">
+        {/* Audio Properties - Single line */}
+        <div className="flex flex-wrap items-center gap-x-3 gap-y-1 text-xs">
+          <div className="flex items-center gap-1">
+            <Radio className="h-3 w-3 text-muted-foreground" />
+            <span className="text-muted-foreground">Sample Rate:</span>
+            <span className="font-semibold">{(result.sample_rate / 1000).toFixed(1)} kHz</span>
           </div>
-            <p className="font-semibold">{(result.sample_rate / 1000).toFixed(1)} kHz</p>
+          <div className="flex items-center gap-1">
+            <FileAudio className="h-3 w-3 text-muted-foreground" />
+            <span className="text-muted-foreground">Bit Depth:</span>
+            <span className="font-semibold">{result.bit_depth}</span>
           </div>
-
-          <div className="space-y-1">
-            <div className="flex items-center gap-2 text-xs text-muted-foreground">
-              <FileAudio className="h-3 w-3" />
-              Bit Depth
+          <div className="flex items-center gap-1">
+            <Waves className="h-3 w-3 text-muted-foreground" />
+            <span className="text-muted-foreground">Channels:</span>
+            <span className="font-semibold">{result.channels === 2 ? "Stereo" : result.channels === 1 ? "Mono" : `${result.channels}`}</span>
           </div>
-            <p className="font-semibold">{result.bit_depth}</p>
+          <div className="flex items-center gap-1">
+            <Clock className="h-3 w-3 text-muted-foreground" />
+            <span className="text-muted-foreground">Duration:</span>
+            <span className="font-semibold">{formatDuration(result.duration)}</span>
           </div>
-
-          <div className="space-y-1">
-            <div className="flex items-center gap-2 text-xs text-muted-foreground">
-              <Waves className="h-3 w-3" />
-              Channels
-            </div>
-            <p className="font-semibold">{result.channels === 2 ? "Stereo" : result.channels === 1 ? "Mono" : `${result.channels} channels`}</p>
-          </div>
-
-          <div className="space-y-1">
-            <div className="flex items-center gap-2 text-xs text-muted-foreground">
-              <Clock className="h-3 w-3" />
-              Duration
-            </div>
-            <p className="font-semibold">{formatDuration(result.duration)}</p>
-          </div>
-
-          <div className="space-y-1">
-            <div className="flex items-center gap-2 text-xs text-muted-foreground">
-              <Gauge className="h-3 w-3" />
-              Nyquist Frequency
-            </div>
-            <p className="font-semibold">{(nyquistFreq / 1000).toFixed(1)} kHz</p>
-          </div>
-
-          <div className="space-y-1">
-            <div className="flex items-center gap-2 text-xs text-muted-foreground">
-              <HardDrive className="h-3 w-3" />
-              Data Size
-            </div>
-            <p className="font-semibold">{formatDataSize(dataSizeMB)}</p>
+          <div className="flex items-center gap-1">
+            <Gauge className="h-3 w-3 text-muted-foreground" />
+            <span className="text-muted-foreground">Nyquist:</span>
+            <span className="font-semibold">{(nyquistFreq / 1000).toFixed(1)} kHz</span>
           </div>
         </div>
 
-        {/* Dynamic Range Analysis */}
-        <div className="border rounded-lg p-4 space-y-3 bg-muted/30">
-          <div className="flex items-center gap-2 text-sm font-medium">
-            <TrendingUp className="h-4 w-4" />
-            Dynamic Range Analysis
+        {/* Dynamic Range - Single line */}
+        <div className="flex flex-wrap items-center gap-x-3 gap-y-1 text-xs border-t pt-2">
+          <div className="flex items-center gap-1">
+            <TrendingUp className="h-3 w-3 text-muted-foreground" />
+            <span className="text-muted-foreground">Dynamic Range:</span>
+            <span className="font-semibold">{formatNumber(result.dynamic_range)} dB</span>
           </div>
-
-          <div className="grid grid-cols-3 gap-3 text-sm">
-            <div>
-              <p className="text-xs text-muted-foreground">Dynamic Range</p>
-              <p className="font-semibold">{formatNumber(result.dynamic_range)} dB</p>
+          <div className="flex items-center gap-1">
+            <span className="text-muted-foreground">Peak:</span>
+            <span className="font-semibold">{formatNumber(result.peak_amplitude)} dB</span>
           </div>
-            <div>
-              <p className="text-xs text-muted-foreground">Peak Level</p>
-              <p className="font-semibold">{formatNumber(result.peak_amplitude)} dB</p>
+          <div className="flex items-center gap-1">
+            <span className="text-muted-foreground">RMS:</span>
+            <span className="font-semibold">{formatNumber(result.rms_level)} dB</span>
           </div>
-            <div>
-              <p className="text-xs text-muted-foreground">RMS Level</p>
-              <p className="font-semibold">{formatNumber(result.rms_level)} dB</p>
+          <div className="flex items-center gap-1 ml-auto">
+            <span className="text-muted-foreground">Samples:</span>
+            <span className="font-semibold">{result.total_samples.toLocaleString()}</span>
           </div>
         </div>
-        </div>
-
-        {/* Technical Info Footer */}
-        <div className="pt-2 border-t">
-          <p className="text-xs text-muted-foreground">
-            Total Samples: {result.total_samples.toLocaleString()}
-          </p>
-        </div>
       </CardContent>
     </Card>
   );

frontend/src/components/AudioAnalysisPage.tsx

@@ -1,6 +1,6 @@
 import { useState, useCallback, useEffect } from "react";
 import { Button } from "@/components/ui/button";
-import { Activity, Upload, ArrowLeft } from "lucide-react";
+import { Upload, ArrowLeft, Trash2 } from "lucide-react";
 import { AudioAnalysis } from "@/components/AudioAnalysis";
 import { SpectrumVisualization } from "@/components/SpectrumVisualization";
 import { useAudioAnalysis } from "@/hooks/useAudioAnalysis";
@@ -13,15 +13,13 @@ interface AudioAnalysisPageProps {
 }
 
 export function AudioAnalysisPage({ onBack }: AudioAnalysisPageProps) {
-  const { analyzing, result, analyzeFile, clearResult } = useAudioAnalysis();
-  const [selectedFilePath, setSelectedFilePath] = useState<string>("");
+  const { analyzing, result, analyzeFile, clearResult, selectedFilePath, spectrumLoading } = useAudioAnalysis();
   const [isDragging, setIsDragging] = useState(false);
 
   const handleSelectFile = async () => {
     try {
       const filePath = await SelectFile();
       if (filePath) {
-        setSelectedFilePath(filePath);
         await analyzeFile(filePath);
       }
     } catch (err) {
@@ -46,7 +44,6 @@ export function AudioAnalysisPage({ onBack }: AudioAnalysisPageProps) {
         return;
       }
 
-      setSelectedFilePath(filePath);
       await analyzeFile(filePath);
     },
     [analyzeFile]
@@ -64,12 +61,12 @@ export function AudioAnalysisPage({ onBack }: AudioAnalysisPageProps) {
 
   const handleAnalyzeAnother = () => {
     clearResult();
-    setSelectedFilePath("");
   };
 
   return (
     <div className="space-y-6">
       {/* Header */}
+      <div className="flex items-center justify-between">
         <div className="flex items-center gap-4">
           {onBack && (
             <Button variant="ghost" size="icon" onClick={onBack}>
@@ -78,14 +75,21 @@ export function AudioAnalysisPage({ onBack }: AudioAnalysisPageProps) {
           )}
           <h1 className="text-2xl font-bold">Audio Quality Analyzer</h1>
         </div>
+        {result && (
+          <Button onClick={handleAnalyzeAnother} variant="outline" size="sm">
+            <Trash2 className="h-4 w-4" />
+            Clear
+          </Button>
+        )}
+      </div>
 
       {/* File Selection */}
       {!result && !analyzing && (
         <div
-          className={`flex flex-col items-center justify-center py-24 border-2 border-dashed rounded-lg transition-colors ${
+          className={`flex flex-col items-center justify-center h-[400px] border-2 border-dashed rounded-lg transition-colors ${
             isDragging
               ? "border-primary bg-primary/10"
-              : "border-muted-foreground/30 hover:border-muted-foreground/50"
+              : "border-muted-foreground/30"
           }`}
           onDragOver={(e) => {
             e.preventDefault();
@@ -101,11 +105,10 @@ export function AudioAnalysisPage({ onBack }: AudioAnalysisPageProps) {
           }}
           style={{ "--wails-drop-target": "drop" } as React.CSSProperties}
         >
-          <Activity
-            className={`h-20 w-20 mb-4 transition-colors ${isDragging ? "text-primary" : "text-muted-foreground/50"}`}
-          />
-          <h3 className="text-xl font-medium mb-2">Analyze FLAC Audio Quality</h3>
-          <p className="text-sm text-muted-foreground mb-6 text-center max-w-md">
+          <div className="mb-4 flex h-16 w-16 items-center justify-center rounded-full bg-muted">
+            <Upload className="h-8 w-8 text-primary" />
+          </div>
+          <p className="text-sm text-muted-foreground mb-4 text-center">
             {isDragging
               ? "Drop your FLAC file here"
               : "Drag and drop a FLAC file here, or click the button below to select"}
@@ -128,30 +131,23 @@ export function AudioAnalysisPage({ onBack }: AudioAnalysisPageProps) {
       {/* Analysis Results */}
       {result && (
         <div className="space-y-4">
-          {/* File Info */}
-          <div className="p-3 bg-muted/30 rounded-lg">
-            <p className="text-xs text-muted-foreground">Analyzing file:</p>
-            <p className="text-sm font-mono truncate">{selectedFilePath}</p>
-          </div>
+          {/* Detailed Analysis */}
+          <AudioAnalysis result={result} analyzing={analyzing} showAnalyzeButton={false} filePath={selectedFilePath} />
 
           {/* Spectrum Visualization */}
+          {spectrumLoading ? (
+            <div className="flex flex-col items-center justify-center py-16 border rounded-lg">
+              <div className="animate-spin rounded-full h-8 w-8 border-b-2 border-primary mb-2"></div>
+              <p className="text-sm text-muted-foreground">Loading spectrum data...</p>
+            </div>
+          ) : (
             <SpectrumVisualization
               sampleRate={result.sample_rate}
               bitsPerSample={result.bits_per_sample}
               duration={result.duration}
               spectrumData={result.spectrum}
             />
-
-          {/* Detailed Analysis */}
-          <AudioAnalysis result={result} analyzing={analyzing} showAnalyzeButton={false} />
-
-          {/* Actions */}
-          <div className="flex gap-2 justify-end pt-2">
-            <Button onClick={handleAnalyzeAnother} variant="outline">
-              <Upload className="h-4 w-4" />
-              Analyze Another File
-            </Button>
-          </div>
+          )}
         </div>
       )}
     </div>

frontend/src/components/AudioConverterPage.tsx

@@ -0,0 +1,674 @@
+import { useState, useCallback, useEffect } from "react";
+import { Button } from "@/components/ui/button";
+import { Label } from "@/components/ui/label";
+import {
+  ToggleGroup,
+  ToggleGroupItem,
+} from "@/components/ui/toggle-group";
+import {
+  Upload,
+  Download,
+  X,
+  CheckCircle2,
+  AlertCircle,
+  Trash2,
+  FileMusic,
+  WandSparkles,
+} from "lucide-react";
+import { Spinner } from "@/components/ui/spinner";
+import {
+  IsFFmpegInstalled,
+  DownloadFFmpeg,
+  InstallFFmpegFromFile,
+  ConvertAudio,
+  SelectAudioFiles,
+} from "../../wailsjs/go/main/App";
+import { toastWithSound as toast } from "@/lib/toast-with-sound";
+import { OnFileDrop, OnFileDropOff } from "../../wailsjs/runtime/runtime";
+
+interface AudioFile {
+  path: string;
+  name: string;
+  format: string;
+  status: "pending" | "converting" | "success" | "error";
+  error?: string;
+  outputPath?: string;
+}
+
+const BITRATE_OPTIONS = [
+  { value: "320k", label: "320k" },
+  { value: "256k", label: "256k" },
+  { value: "192k", label: "192k" },
+  { value: "128k", label: "128k" },
+];
+
+const STORAGE_KEY = "spotiflac_audio_converter_state";
+
+export function AudioConverterPage() {
+  const [ffmpegInstalled, setFfmpegInstalled] = useState<boolean>(false);
+  const [installingFfmpeg, setInstallingFfmpeg] = useState(false);
+  const [files, setFiles] = useState<AudioFile[]>(() => {
+    // Initialize from sessionStorage synchronously
+    try {
+      const saved = sessionStorage.getItem(STORAGE_KEY);
+      if (saved) {
+        const parsed = JSON.parse(saved);
+        if (parsed.files && Array.isArray(parsed.files) && parsed.files.length > 0) {
+          return parsed.files;
+        }
+      }
+    } catch (err) {
+      console.error("Failed to load saved state:", err);
+    }
+    return [];
+  });
+  const [outputFormat, setOutputFormat] = useState<"mp3" | "m4a">(() => {
+    try {
+      const saved = sessionStorage.getItem(STORAGE_KEY);
+      if (saved) {
+        const parsed = JSON.parse(saved);
+        if (parsed.outputFormat === "mp3" || parsed.outputFormat === "m4a") {
+          return parsed.outputFormat;
+        }
+      }
+    } catch (err) {
+      // Ignore
+    }
+    return "mp3";
+  });
+  const [bitrate, setBitrate] = useState(() => {
+    try {
+      const saved = sessionStorage.getItem(STORAGE_KEY);
+      if (saved) {
+        const parsed = JSON.parse(saved);
+        if (parsed.bitrate) {
+          return parsed.bitrate;
+        }
+      }
+    } catch (err) {
+      // Ignore
+    }
+    return "320k";
+  });
+  const [converting, setConverting] = useState(false);
+  const [isDragging, setIsDragging] = useState(false);
+  const [isDraggingFFmpeg, setIsDraggingFFmpeg] = useState(false);
+  const [isFullscreen, setIsFullscreen] = useState(false);
+
+  // Helper function to save state to sessionStorage
+  const saveState = useCallback((stateToSave: { files: AudioFile[]; outputFormat: "mp3" | "m4a"; bitrate: string }) => {
+    try {
+      sessionStorage.setItem(STORAGE_KEY, JSON.stringify(stateToSave));
+    } catch (err) {
+      console.error("Failed to save state:", err);
+    }
+  }, []);
+
+  // Load saved state from sessionStorage on mount (only for ffmpeg check)
+  useEffect(() => {
+    checkFfmpegInstallation();
+  }, []);
+
+  // Save state to sessionStorage whenever files, outputFormat, or bitrate changes
+  useEffect(() => {
+    saveState({ files, outputFormat, bitrate });
+  }, [files, outputFormat, bitrate, saveState]);
+
+  // Auto-set output format to M4A if all files are MP3
+  useEffect(() => {
+    if (files.length === 0) return;
+    
+    const allMP3 = files.every((f) => f.format === "mp3");
+    if (allMP3 && outputFormat !== "m4a") {
+      setOutputFormat("m4a");
+    }
+  }, [files, outputFormat]);
+
+  // Check if format selection should be disabled (all files are MP3)
+  const isFormatDisabled = files.length > 0 && files.every((f) => f.format === "mp3");
+
+  // Detect fullscreen/maximized window
+  useEffect(() => {
+    const checkFullscreen = () => {
+      // Check if window is maximized or fullscreen
+      // For Wails, we can check if window height is close to screen height
+      const isMaximized = window.innerHeight >= window.screen.height * 0.9;
+      setIsFullscreen(isMaximized);
+    };
+
+    checkFullscreen();
+    window.addEventListener("resize", checkFullscreen);
+    
+    // Also check on window focus in case user maximizes externally
+    window.addEventListener("focus", checkFullscreen);
+
+    return () => {
+      window.removeEventListener("resize", checkFullscreen);
+      window.removeEventListener("focus", checkFullscreen);
+    };
+  }, []);
+
+  const checkFfmpegInstallation = async () => {
+    try {
+      const installed = await IsFFmpegInstalled();
+      setFfmpegInstalled(installed);
+    } catch (err) {
+      console.error("Failed to check ffmpeg:", err);
+      setFfmpegInstalled(false);
+    }
+  };
+
+  const handleInstallFfmpeg = async () => {
+    setInstallingFfmpeg(true);
+    try {
+      const result = await DownloadFFmpeg();
+      if (result.success) {
+        toast.success("FFmpeg Installed", {
+          description: "FFmpeg has been installed successfully",
+        });
+        setFfmpegInstalled(true);
+      } else {
+        toast.error("Installation Failed", {
+          description: result.error || "Failed to install FFmpeg",
+        });
+      }
+    } catch (err) {
+      toast.error("Installation Failed", {
+        description: err instanceof Error ? err.message : "Unknown error",
+      });
+    } finally {
+      setInstallingFfmpeg(false);
+    }
+  };
+
+  const handleFFmpegFileDrop = useCallback(
+    async (_x: number, _y: number, paths: string[]) => {
+      setIsDraggingFFmpeg(false);
+
+      if (paths.length === 0) return;
+
+      // Only process the first file
+      const filePath = paths[0];
+      const fileName = filePath.split(/[/\\]/).pop()?.toLowerCase() || "";
+
+      // Check if it's likely an ffmpeg executable
+      if (!fileName.includes("ffmpeg")) {
+        toast.error("Invalid File", {
+          description: "Please drop an FFmpeg executable file",
+        });
+        return;
+      }
+
+      setInstallingFfmpeg(true);
+      try {
+        const result = await InstallFFmpegFromFile(filePath);
+        if (result.success) {
+          toast.success("FFmpeg Installed", {
+            description: "FFmpeg has been installed successfully from file",
+          });
+          setFfmpegInstalled(true);
+        } else {
+          toast.error("Installation Failed", {
+            description: result.error || "Failed to install FFmpeg",
+          });
+        }
+      } catch (err) {
+        toast.error("Installation Failed", {
+          description: err instanceof Error ? err.message : "Unknown error",
+        });
+      } finally {
+        setInstallingFfmpeg(false);
+      }
+    },
+    []
+  );
+
+  useEffect(() => {
+    if (ffmpegInstalled === false) {
+      // Set up drag and drop for FFmpeg installation
+      OnFileDrop((x, y, paths) => {
+        handleFFmpegFileDrop(x, y, paths);
+      }, true);
+
+      return () => {
+        OnFileDropOff();
+      };
+    }
+  }, [ffmpegInstalled, handleFFmpegFileDrop]);
+
+  const handleSelectFiles = async () => {
+    try {
+      const selectedFiles = await SelectAudioFiles();
+      if (selectedFiles && selectedFiles.length > 0) {
+        addFiles(selectedFiles);
+      }
+    } catch (err) {
+      toast.error("File Selection Failed", {
+        description: err instanceof Error ? err.message : "Failed to select files",
+      });
+    }
+  };
+
+  const addFiles = useCallback((paths: string[]) => {
+    const validExtensions = [".mp3", ".flac"];
+    
+    // Check for M4A files specifically
+    const m4aFiles = paths.filter((path) => {
+      const ext = path.toLowerCase().slice(path.lastIndexOf("."));
+      return ext === ".m4a";
+    });
+
+    if (m4aFiles.length > 0) {
+      toast.error("M4A files not supported", {
+        description: "Only FLAC and MP3 files are supported as input. Please convert M4A files first.",
+      });
+    }
+
+    setFiles((prev) => {
+      const newFiles: AudioFile[] = paths
+        .filter((path) => {
+          const ext = path.toLowerCase().slice(path.lastIndexOf("."));
+          return validExtensions.includes(ext);
+        })
+        .filter((path) => !prev.some((f) => f.path === path))
+        .map((path) => {
+          const name = path.split(/[/\\]/).pop() || path;
+          const ext = name.slice(name.lastIndexOf(".") + 1).toLowerCase();
+          return {
+            path,
+            name,
+            format: ext,
+            status: "pending" as const,
+          };
+        });
+
+      if (newFiles.length > 0) {
+        if (paths.length > newFiles.length) {
+          const skipped = paths.length - newFiles.length;
+          toast.info("Some files skipped", {
+            description: `${skipped} file(s) were skipped (unsupported format or already added)`,
+          });
+        }
+
+        return [...prev, ...newFiles];
+      }
+
+      if (paths.length > 0 && m4aFiles.length === 0) {
+        toast.info("No new files added", {
+          description: "All files were already added or have unsupported format",
+        });
+      }
+
+      return prev;
+    });
+  }, []);
+
+  const handleFileDrop = useCallback(
+    async (_x: number, _y: number, paths: string[]) => {
+      setIsDragging(false);
+
+      if (paths.length === 0) return;
+
+      addFiles(paths);
+    },
+    [addFiles]
+  );
+
+  useEffect(() => {
+    // Only enable drag and drop for audio files if FFmpeg is installed
+    if (ffmpegInstalled === true) {
+      OnFileDrop((x, y, paths) => {
+        handleFileDrop(x, y, paths);
+      }, true);
+
+      return () => {
+        OnFileDropOff();
+      };
+    }
+  }, [handleFileDrop, ffmpegInstalled]);
+
+
+  const removeFile = (path: string) => {
+    setFiles((prev) => prev.filter((f) => f.path !== path));
+  };
+
+  const clearFiles = () => {
+    setFiles([]);
+  };
+
+  const handleConvert = async () => {
+    if (files.length === 0) {
+      toast.error("No files selected", {
+        description: "Please add audio files to convert",
+      });
+      return;
+    }
+
+    setConverting(true);
+
+    try {
+      // Include all files (including previously successful ones) for conversion
+      const inputPaths = files.map((f) => f.path);
+
+      // Mark all files as converting (including previously successful ones)
+      setFiles((prev) =>
+        prev.map((f) => {
+          if (inputPaths.includes(f.path)) {
+            return { ...f, status: "converting" as const, error: undefined };
+          }
+          return f;
+        })
+      );
+
+      const results = await ConvertAudio({
+        input_files: inputPaths,
+        output_format: outputFormat,
+        bitrate: bitrate,
+      });
+
+      // Update file statuses based on results
+      setFiles((prev) =>
+        prev.map((f) => {
+          const result = results.find((r) => r.input_file === f.path);
+          if (result) {
+            return {
+              ...f,
+              status: result.success ? "success" : "error",
+              error: result.error,
+              outputPath: result.output_file,
+            };
+          }
+          return f;
+        })
+      );
+
+      const successCount = results.filter((r) => r.success).length;
+      const failCount = results.filter((r) => !r.success).length;
+
+      if (successCount > 0) {
+        toast.success("Conversion Complete", {
+          description: `Successfully converted ${successCount} file(s)${failCount > 0 ? `, ${failCount} failed` : ""}`,
+        });
+      } else if (failCount > 0) {
+        toast.error("Conversion Failed", {
+          description: `All ${failCount} file(s) failed to convert`,
+        });
+      }
+    } catch (err) {
+      toast.error("Conversion Error", {
+        description: err instanceof Error ? err.message : "Unknown error",
+      });
+      setFiles((prev) =>
+        prev.map((f) => ({ ...f, status: "error" as const, error: "Conversion failed" }))
+      );
+    } finally {
+      setConverting(false);
+    }
+  };
+
+  const getStatusIcon = (status: AudioFile["status"]) => {
+    switch (status) {
+      case "converting":
+        return <Spinner className="h-4 w-4 text-primary" />;
+      case "success":
+        return <CheckCircle2 className="h-4 w-4 text-green-500" />;
+      case "error":
+        return <AlertCircle className="h-4 w-4 text-destructive" />;
+      default:
+        return <FileMusic className="h-4 w-4 text-muted-foreground" />;
+    }
+  };
+
+  // Count files that can be converted (pending + success files that can be re-converted)
+  const convertableCount = files.filter((f) => f.status === "pending" || f.status === "success").length;
+  const successCount = files.filter((f) => f.status === "success").length;
+
+  // Show FFmpeg installation prompt if not installed
+  if (ffmpegInstalled === false) {
+    return (
+      <div className={`space-y-6 ${isFullscreen ? "h-full flex flex-col" : ""}`}>
+        <div className="flex items-center gap-4">
+          <h1 className="text-2xl font-bold">Audio Converter</h1>
+        </div>
+
+        <div
+          className={`flex flex-col items-center justify-center border-2 border-dashed rounded-lg transition-all ${
+            isFullscreen ? "flex-1 min-h-[400px]" : "h-[400px]"
+          } ${
+            isDraggingFFmpeg
+              ? "border-primary bg-primary/10"
+              : "border-muted-foreground/30"
+          }`}
+          onDragOver={(e) => {
+            e.preventDefault();
+            setIsDraggingFFmpeg(true);
+          }}
+          onDragLeave={(e) => {
+            e.preventDefault();
+            setIsDraggingFFmpeg(false);
+          }}
+          onDrop={(e) => {
+            e.preventDefault();
+            setIsDraggingFFmpeg(false);
+          }}
+          style={{ "--wails-drop-target": "drop" } as React.CSSProperties}
+        >
+          <div className="mb-4 flex h-16 w-16 items-center justify-center rounded-full bg-muted">
+            <Download className="h-8 w-8 text-muted-foreground" />
+          </div>
+          <p className="text-sm text-muted-foreground mb-2 text-center">
+            FFmpeg is required to convert audio files.
+          </p>
+          <p className="text-sm text-muted-foreground mb-4 text-center">
+            {isDraggingFFmpeg
+              ? "Drop your FFmpeg executable here"
+              : "Drag and drop your FFmpeg executable here, or click the button below to download automatically."}
+          </p>
+          <Button
+            onClick={handleInstallFfmpeg}
+            disabled={installingFfmpeg}
+            size="lg"
+          >
+            {installingFfmpeg ? (
+              <>
+                <Spinner className="h-5 w-5" />
+                Installing FFmpeg...
+              </>
+            ) : (
+              <>
+                <Download className="h-5 w-5" />
+                Install FFmpeg
+              </>
+            )}
+          </Button>
+        </div>
+      </div>
+    );
+  }
+
+  return (
+    <div className={`space-y-6 ${isFullscreen ? "h-full flex flex-col" : ""}`}>
+      {/* Header */}
+      <div className="flex items-center justify-between">
+        <h1 className="text-2xl font-bold">Audio Converter</h1>
+        {files.length > 0 && (
+          <div className="flex gap-2">
+            <Button variant="outline" size="sm" onClick={handleSelectFiles}>
+              <Upload className="h-4 w-4" />
+              Add More
+            </Button>
+            <Button
+              variant="outline"
+              size="sm"
+              onClick={clearFiles}
+              disabled={converting}
+            >
+              <Trash2 className="h-4 w-4" />
+              Clear All
+            </Button>
+          </div>
+        )}
+      </div>
+
+      {/* Drop Zone / File List */}
+      <div
+        className={`flex flex-col items-center justify-center border-2 border-dashed rounded-lg transition-all ${
+          isFullscreen ? "flex-1 min-h-[400px]" : "h-[400px]"
+        } ${
+          isDragging
+            ? "border-primary bg-primary/10"
+            : "border-muted-foreground/30"
+        }`}
+        onDragOver={(e) => {
+          e.preventDefault();
+          setIsDragging(true);
+        }}
+        onDragLeave={(e) => {
+          e.preventDefault();
+          setIsDragging(false);
+        }}
+        onDrop={(e) => {
+          e.preventDefault();
+          setIsDragging(false);
+        }}
+        style={{ "--wails-drop-target": "drop" } as React.CSSProperties}
+      >
+        {files.length === 0 ? (
+          <>
+            <div className="mb-4 flex h-16 w-16 items-center justify-center rounded-full bg-muted">
+              <Upload className="h-8 w-8 text-primary" />
+            </div>
+            <p className="text-sm text-muted-foreground mb-2 text-center">
+              {isDragging
+                ? "Drop your audio files here"
+                : "Drag and drop audio files here, or click the button below to select"}
+            </p>
+            <p className="text-xs text-muted-foreground mb-4 text-center">
+              Supported formats: FLAC, MP3
+            </p>
+            <Button onClick={handleSelectFiles} size="lg">
+              <Upload className="h-5 w-5" />
+              Select Files
+            </Button>
+          </>
+        ) : (
+          <div className="w-full h-full p-6 space-y-4 flex flex-col">
+            {/* Settings Row - Only show when files exist */}
+            <div className="space-y-2 pb-4 border-b shrink-0">
+                {/* Format and Bitrate in one line */}
+                <div className="flex items-center gap-4">
+                  <div className="flex items-center gap-2">
+                    <Label className="whitespace-nowrap">Format:</Label>
+                    <ToggleGroup
+                      type="single"
+                      variant="outline"
+                      value={outputFormat}
+                      onValueChange={(value) => {
+                        if (value && !isFormatDisabled) setOutputFormat(value as "mp3" | "m4a");
+                      }}
+                      disabled={isFormatDisabled}
+                    >
+                      {!isFormatDisabled && (
+                        <ToggleGroupItem value="mp3" aria-label="MP3">
+                          MP3
+                        </ToggleGroupItem>
+                      )}
+                      <ToggleGroupItem value="m4a" aria-label="M4A" disabled={isFormatDisabled}>
+                        M4A
+                      </ToggleGroupItem>
+                    </ToggleGroup>
+                  </div>
+                  <div className="flex items-center gap-2">
+                    <Label className="whitespace-nowrap">Bitrate:</Label>
+                    <ToggleGroup
+                      type="single"
+                      variant="outline"
+                      value={bitrate}
+                      onValueChange={(value) => {
+                        if (value) setBitrate(value);
+                      }}
+                    >
+                      {BITRATE_OPTIONS.map((option) => (
+                        <ToggleGroupItem
+                          key={option.value}
+                          value={option.value}
+                          aria-label={option.label}
+                        >
+                          {option.label}
+                        </ToggleGroupItem>
+                      ))}
+                    </ToggleGroup>
+                  </div>
+                </div>
+              </div>
+
+              {/* File List Header */}
+              <div className="flex items-center justify-between shrink-0">
+                <div className="text-sm text-muted-foreground">
+                  {files.length} file(s) • {successCount} converted
+                </div>
+              </div>
+
+              {/* File List */}
+              <div className="flex-1 space-y-2 overflow-y-auto min-h-0">
+              {files.map((file) => (
+                <div
+                  key={file.path}
+                  className="flex items-center gap-3 rounded-lg border p-3"
+                >
+                  {getStatusIcon(file.status)}
+                  <div className="flex-1 min-w-0">
+                    <p className="truncate text-sm font-medium">{file.name}</p>
+                    {file.error && (
+                      <p className="truncate text-xs text-destructive">
+                        {file.error}
+                      </p>
+                    )}
+                  </div>
+                  <span className="text-xs uppercase text-muted-foreground">
+                    {file.format}
+                  </span>
+                  {file.status !== "converting" && (
+                    <Button
+                      variant="ghost"
+                      size="icon"
+                      className="h-8 w-8"
+                      onClick={() => removeFile(file.path)}
+                      disabled={converting}
+                    >
+                      <X className="h-4 w-4" />
+                    </Button>
+                  )}
+                </div>
+              ))}
+            </div>
+
+              {/* Convert Button */}
+              <div className="flex justify-center pt-4 border-t shrink-0">
+                <Button
+                  onClick={handleConvert}
+                  disabled={converting || convertableCount === 0}
+                  size="lg"
+                >
+                {converting ? (
+                  <>
+                    <Spinner className="h-4 w-4" />
+                    Converting...
+                  </>
+                ) : (
+                  <>
+                    <WandSparkles className="h-4 w-4" />
+                    Convert {convertableCount > 0 ? `${convertableCount} File(s)` : ""}
+                  </>
+                )}
+              </Button>
+            </div>
+          </div>
+        )}
+      </div>
+    </div>
+  );
+}
+
+
+

frontend/src/components/DebugLogger.tsx

@@ -1,132 +0,0 @@
-import { useState, useEffect, useRef } from "react";
-import { Bug, Trash2, X, Copy, Check } from "lucide-react";
-import { Button } from "@/components/ui/button";
-import {
-  Dialog,
-  DialogContent,
-  DialogTitle,
-  DialogTrigger,
-} from "@/components/ui/dialog";
-import { logger, type LogEntry } from "@/lib/logger";
-
-const levelColors: Record<string, string> = {
-  info: "text-blue-500",
-  success: "text-green-500",
-  warning: "text-yellow-500",
-  error: "text-red-500",
-  debug: "text-gray-500",
-};
-
-function formatTime(date: Date): string {
-  return date.toLocaleTimeString("en-US", {
-    hour12: false,
-    hour: "2-digit",
-    minute: "2-digit",
-    second: "2-digit",
-  });
-}
-
-export function DebugLogger() {
-  const [open, setOpen] = useState(false);
-  const [logs, setLogs] = useState<LogEntry[]>([]);
-  const [copied, setCopied] = useState(false);
-  const scrollRef = useRef<HTMLDivElement>(null);
-
-  useEffect(() => {
-    const unsubscribe = logger.subscribe(() => {
-      setLogs(logger.getLogs());
-    });
-    setLogs(logger.getLogs());
-    return () => {
-      unsubscribe();
-    };
-  }, []);
-
-  useEffect(() => {
-    if (scrollRef.current) {
-      scrollRef.current.scrollTop = scrollRef.current.scrollHeight;
-    }
-  }, [logs]);
-
-  const handleClear = () => {
-    logger.clear();
-  };
-
-  const handleCopy = async () => {
-    const logText = logs
-      .map((log) => `[${formatTime(log.timestamp)}] [${log.level}] ${log.message}`)
-      .join("\n");
-    
-    try {
-      await navigator.clipboard.writeText(logText);
-      setCopied(true);
-      setTimeout(() => setCopied(false), 500);
-    } catch (err) {
-      console.error("Failed to copy logs:", err);
-    }
-  };
-
-  return (
-    <Dialog open={open} onOpenChange={setOpen}>
-      <DialogTrigger asChild>
-        <Button
-          variant="ghost"
-          size="icon"
-          className="h-6 w-6 opacity-50 hover:opacity-100"
-        >
-          <Bug className="h-3.5 w-3.5" />
-        </Button>
-      </DialogTrigger>
-      <DialogContent className="sm:max-w-[600px] max-h-[80vh] p-6 [&>button]:hidden">
-        <DialogTitle className="text-sm font-medium">Debug Logs</DialogTitle>
-        <div className="absolute right-4 top-4 flex items-center gap-1">
-          <Button
-            variant="ghost"
-            size="icon"
-            className="h-6 w-6 opacity-70 hover:opacity-100"
-            onClick={handleCopy}
-            disabled={logs.length === 0}
-          >
-            {copied ? <Check className="h-4 w-4" /> : <Copy className="h-4 w-4" />}
-          </Button>
-          <Button
-            variant="ghost"
-            size="icon"
-            className="h-6 w-6 opacity-70 hover:opacity-100"
-            onClick={handleClear}
-          >
-            <Trash2 className="h-4 w-4" />
-          </Button>
-          <Button
-            variant="ghost"
-            size="icon"
-            className="h-6 w-6 opacity-70 hover:opacity-100"
-            onClick={() => setOpen(false)}
-          >
-            <X className="h-4 w-4" />
-          </Button>
-        </div>
-        <div
-          ref={scrollRef}
-          className="h-[400px] overflow-y-auto bg-muted/50 rounded-md p-3 font-mono text-xs"
-        >
-          {logs.length === 0 ? (
-            <p className="text-muted-foreground lowercase">no logs yet...</p>
-          ) : (
-            logs.map((log, i) => (
-              <div key={i} className="flex gap-2 py-0.5">
-                <span className="text-muted-foreground shrink-0">
-                  [{formatTime(log.timestamp)}]
-                </span>
-                <span className={`shrink-0 w-16 ${levelColors[log.level]}`}>
-                  [{log.level}]
-                </span>
-                <span className="break-all">{log.message}</span>
-              </div>
-            ))
-          )}
-        </div>
-      </DialogContent>
-    </Dialog>
-  );
-}

frontend/src/components/Header.tsx

@@ -58,7 +58,7 @@ export function Header({ version, hasUpdate, releaseDate }: HeaderProps) {
           </div>
         </div>
         <p className="text-muted-foreground">
-          Get Spotify tracks in true FLAC from Tidal, Deezer, Qobuz & Amazon Music — no account required.
+          Get Spotify tracks in true FLAC from Tidal, Qobuz & Amazon Music — no account required.
         </p>
       </div>
     </div>

frontend/src/components/PlatformIcons.tsx

@@ -7,12 +7,6 @@ export const TidalIcon = ({ className = "w-4 h-4" }: { className?: string }) =>
   </svg>
 );
 
-export const DeezerIcon = ({ className = "w-4 h-4" }: { className?: string }) => (
-  <svg viewBox="0 0 24 24" className={`${className} fill-current`}>
-    <path d="M18.77 5.55c.19-1.07.46-1.75.76-1.75.56 0 1.02 2.34 1.02 5.23 0 2.89-.46 5.23-1.02 5.23-.23 0-.44-.4-.61-1.06-.27 2.43-.83 4.11-1.48 4.11-.5 0-.96-1-1.26-2.6-.2 3.03-.73 5.17-1.33 5.17-.39 0-.73-.85-.99-2.23-.31 2.85-1.03 4.85-1.86 4.85-.83 0-1.55-2-1.86-4.85-.25 1.38-.6 2.23-.99 2.23-.6 0-1.12-2.14-1.33-5.16-.3 1.58-.75 2.6-1.26 2.6-.65 0-1.2-1.68-1.48-4.12-.17.66-.38 1.06-.61 1.06-.56 0-1.02-2.34-1.02-5.23 0-2.89.46-5.23 1.02-5.23.3 0 .57.68.76 1.75C5.53 3.7 6 2.5 6.56 2.5c.66 0 1.22 1.7 1.49 4.17.26-1.8.66-2.94 1.1-2.94.63 0 1.16 2.25 1.36 5.4.36-1.62.9-2.63 1.5-2.63.58 0 1.12 1.01 1.49 2.62.2-3.14.72-5.4 1.35-5.4.44 0 .84 1.15 1.1 2.95.27-2.47.84-4.17 1.49-4.17.55 0 1.03 1.2 1.33 3.05ZM2 8.52c0-1.3.26-2.34.58-2.34.32 0 .57 1.05.57 2.34 0 1.29-.25 2.34-.57 2.34-.32 0-.58-1.05-.58-2.34Zm18.85 0c0-1.3.25-2.34.57-2.34.32 0 .58 1.05.58 2.34 0 1.29-.26 2.34-.58 2.34-.32 0-.57-1.05-.57-2.34Z"></path>
-  </svg>
-);
-
 export const QobuzIcon = ({ className = "w-4 h-4" }: { className?: string }) => (
   <svg viewBox="0 0 24 24" className={`${className} fill-current`}>
     <path d="M21.744 9.815C19.836 1.261 8.393-1 3.55 6.64-.618 13.214 4 22 11.988 22c2.387 0 4.63-.83 6.394-2.304l2.252 2.252 1.224-1.224-2.252-2.253c1.983-2.407 2.823-5.586 2.138-8.656Zm-3.508 7.297L16.4 15.275c-.786-.787-2.017.432-1.224 1.225L17 18.326C10.29 23.656.5 16 5.16 7.667c3.502-6.264 13.172-4.348 14.707 2.574.529 2.385-.06 4.987-1.63 6.87Z"></path>

frontend/src/components/PlaylistInfo.tsx

@@ -1,6 +1,6 @@
 import { Button } from "@/components/ui/button";
 import { Card, CardContent } from "@/components/ui/card";
-import { Download, FolderOpen, ImageDown } from "lucide-react";
+import { Download, FolderOpen, ImageDown, FileText } from "lucide-react";
 import { Spinner } from "@/components/ui/spinner";
 import { Tooltip, TooltipContent, TooltipTrigger } from "@/components/ui/tooltip";
 import { SearchAndSort } from "./SearchAndSort";
@@ -50,14 +50,16 @@ interface PlaylistInfoProps {
   skippedCovers?: Set<string>;
   downloadingCoverTrack?: string | null;
   isBulkDownloadingCovers?: boolean;
+  isBulkDownloadingLyrics?: boolean;
   onSearchChange: (value: string) => void;
   onSortChange: (value: string) => void;
   onToggleTrack: (isrc: string) => void;
   onToggleSelectAll: (tracks: TrackMetadata[]) => void;
-  onDownloadTrack: (isrc: string, name: string, artists: string, albumName: string, spotifyId?: string) => void;
+  onDownloadTrack: (isrc: string, name: string, artists: string, albumName: string, spotifyId?: string, folderName?: string, durationMs?: number, position?: number, albumArtist?: string, releaseDate?: string, coverUrl?: string, spotifyTrackNumber?: number, spotifyDiscNumber?: number, spotifyTotalTracks?: number) => void;
   onDownloadLyrics?: (spotifyId: string, name: string, artists: string, albumName: string, folderName?: string, isArtistDiscography?: boolean, position?: number) => void;
   onDownloadCover?: (coverUrl: string, trackName: string, artistName: string, albumName: string, folderName?: string, isArtistDiscography?: boolean, position?: number, trackId?: string) => void;
   onCheckAvailability?: (spotifyId: string) => void;
+  onDownloadAllLyrics?: () => void;
   onDownloadAllCovers?: () => void;
   onDownloadAll: () => void;
   onDownloadSelected: () => void;
@@ -96,6 +98,7 @@ export function PlaylistInfo({
   skippedCovers,
   downloadingCoverTrack,
   isBulkDownloadingCovers,
+  isBulkDownloadingLyrics,
   onSearchChange,
   onSortChange,
   onToggleTrack,
@@ -104,6 +107,7 @@ export function PlaylistInfo({
   onDownloadLyrics,
   onDownloadCover,
   onCheckAvailability,
+  onDownloadAllLyrics,
   onDownloadAllCovers,
   onDownloadAll,
   onDownloadSelected,
@@ -161,6 +165,22 @@ export function PlaylistInfo({
                     Download Selected ({selectedTracks.length})
                   </Button>
                 )}
+                {onDownloadAllLyrics && (
+                  <Tooltip>
+                    <TooltipTrigger asChild>
+                      <Button
+                        onClick={onDownloadAllLyrics}
+                        variant="outline"
+                        disabled={isBulkDownloadingLyrics}
+                      >
+                        {isBulkDownloadingLyrics ? <Spinner /> : <FileText className="h-4 w-4" />}
+                      </Button>
+                    </TooltipTrigger>
+                    <TooltipContent>
+                      <p>Download All Lyrics</p>
+                    </TooltipContent>
+                  </Tooltip>
+                )}
                 {onDownloadAllCovers && (
                   <Tooltip>
                     <TooltipTrigger asChild>

frontend/src/components/SearchBar.tsx

@@ -43,6 +43,7 @@ export function SearchBar({
             </TooltipTrigger>
             <TooltipContent side="right">
               <p>Supports track, album, playlist, and artist URLs</p>
+              <p className="mt-1">Note: Playlist must be public (not private)</p>
             </TooltipContent>
           </Tooltip>
         </div>

frontend/src/components/Settings.tsx

@@ -1,439 +0,0 @@
-import { useState, useEffect } from "react";
-import { Button } from "@/components/ui/button";
-import { InputWithContext } from "@/components/ui/input-with-context";
-import { Label } from "@/components/ui/label";
-import {
-  Dialog,
-  DialogContent,
-  DialogFooter,
-  DialogTitle,
-  DialogTrigger,
-} from "@/components/ui/dialog";
-import {
-  Select,
-  SelectContent,
-  SelectItem,
-  SelectTrigger,
-  SelectValue,
-} from "@/components/ui/select";
-import { Checkbox } from "@/components/ui/checkbox";
-import { RadioGroup, RadioGroupItem } from "@/components/ui/radio-group";
-import { Tooltip, TooltipContent, TooltipTrigger } from "@/components/ui/tooltip";
-import { Settings as SettingsIcon, FolderOpen, Save, RotateCcw, Info, X, Volume2 } from "lucide-react";
-import { Switch } from "@/components/ui/switch";
-import { getSettings, getSettingsWithDefaults, saveSettings, resetToDefaultSettings, applyThemeMode, type Settings as SettingsType } from "@/lib/settings";
-import { themes, applyTheme } from "@/lib/themes";
-import { SelectFolder } from "../../wailsjs/go/main/App";
-
-// Service Icons
-const TidalIcon = () => (
-  <svg viewBox="0 0 24 24" className="inline-block w-[1.1em] h-[1.1em] mr-2 fill-muted-foreground">
-    <path d="M4.022 4.5 0 8.516l3.997 3.99 3.997-3.984L4.022 4.5Zm7.956 0L7.994 8.522l4.003 3.984L16 8.484 11.978 4.5Zm8.007 0L24 8.528l-4.003 3.978L16 8.484 19.985 4.5Z"></path>
-    <path d="m8.012 16.534 3.991 3.966L16 16.49l-4.003-3.984-3.985 4.028Z"></path>
-  </svg>
-);
-
-const DeezerIcon = () => (
-  <svg viewBox="0 0 24 24" className="inline-block w-[1.1em] h-[1.1em] mr-2 fill-muted-foreground">
-    <path d="M18.77 5.55c.19-1.07.46-1.75.76-1.75.56 0 1.02 2.34 1.02 5.23 0 2.89-.46 5.23-1.02 5.23-.23 0-.44-.4-.61-1.06-.27 2.43-.83 4.11-1.48 4.11-.5 0-.96-1-1.26-2.6-.2 3.03-.73 5.17-1.33 5.17-.39 0-.73-.85-.99-2.23-.31 2.85-1.03 4.85-1.86 4.85-.83 0-1.55-2-1.86-4.85-.25 1.38-.6 2.23-.99 2.23-.6 0-1.12-2.14-1.33-5.16-.3 1.58-.75 2.6-1.26 2.6-.65 0-1.2-1.68-1.48-4.12-.17.66-.38 1.06-.61 1.06-.56 0-1.02-2.34-1.02-5.23 0-2.89.46-5.23 1.02-5.23.3 0 .57.68.76 1.75C5.53 3.7 6 2.5 6.56 2.5c.66 0 1.22 1.7 1.49 4.17.26-1.8.66-2.94 1.1-2.94.63 0 1.16 2.25 1.36 5.4.36-1.62.9-2.63 1.5-2.63.58 0 1.12 1.01 1.49 2.62.2-3.14.72-5.4 1.35-5.4.44 0 .84 1.15 1.1 2.95.27-2.47.84-4.17 1.49-4.17.55 0 1.03 1.2 1.33 3.05ZM2 8.52c0-1.3.26-2.34.58-2.34.32 0 .57 1.05.57 2.34 0 1.29-.25 2.34-.57 2.34-.32 0-.58-1.05-.58-2.34Zm18.85 0c0-1.3.25-2.34.57-2.34.32 0 .58 1.05.58 2.34 0 1.29-.26 2.34-.58 2.34-.32 0-.57-1.05-.57-2.34Z"></path>
-  </svg>
-);
-
-const QobuzIcon = () => (
-  <svg viewBox="0 0 24 24" className="inline-block w-[1.1em] h-[1.1em] mr-2 fill-muted-foreground">
-    <path d="M21.744 9.815C19.836 1.261 8.393-1 3.55 6.64-.618 13.214 4 22 11.988 22c2.387 0 4.63-.83 6.394-2.304l2.252 2.252 1.224-1.224-2.252-2.253c1.983-2.407 2.823-5.586 2.138-8.656Zm-3.508 7.297L16.4 15.275c-.786-.787-2.017.432-1.224 1.225L17 18.326C10.29 23.656.5 16 5.16 7.667c3.502-6.264 13.172-4.348 14.707 2.574.529 2.385-.06 4.987-1.63 6.87Z"></path>
-    <path d="M13.4 8.684a3.59 3.59 0 0 0-4.712 1.9 3.59 3.59 0 0 0 1.9 4.712 3.594 3.594 0 0 0 4.711-1.89 3.598 3.598 0 0 0-1.9-4.722Zm-.737 3.591a.727.727 0 0 1-.965.384.727.727 0 0 1-.384-.965.727.727 0 0 1 .965-.384.73.73 0 0 1 .384.965Z"></path>
-  </svg>
-);
-
-const AmazonIcon = () => (
-  <svg viewBox="0 0 24 24" className="inline-block w-[1.1em] h-[1.1em] mr-2 fill-muted-foreground">
-    <path fillRule="evenodd" d="M15.62 11.13c-.15.1-.37.18-.64.18-.42 0-.82-.05-1.21-.18l-.22-.04c-.08 0-.1.04-.1.14v.25c0 .08.02.12.05.17.02.03.07.08.15.1.4.18.84.25 1.33.25.52 0 .91-.12 1.24-.37.32-.25.47-.57.47-.99 0-.3-.08-.52-.23-.72-.15-.17-.4-.34-.74-.47l-.7-.27c-.26-.1-.46-.2-.53-.3a.47.47 0 0 1-.15-.36c0-.38.27-.57.84-.57.32 0 .64.05.94.15l.2.04c.07 0 .12-.04.12-.14v-.25c0-.08-.03-.12-.05-.17-.03-.05-.08-.08-.15-.1-.37-.13-.74-.2-1.11-.2-.47 0-.87.12-1.16.35-.3.22-.45.54-.45.91 0 .57.32.99.97 1.24l.74.27c.24.1.4.17.5.27.09.1.12.2.12.35 0 .2-.08.37-.23.46Zm-3.88-3.55v3.28c-.42.28-.84.42-1.26.42-.27 0-.47-.07-.6-.22-.11-.15-.16-.37-.16-.7V7.59c0-.13-.05-.18-.18-.18h-.52c-.12 0-.17.05-.17.18v3.06c0 .42.1.77.32.99.22.22.55.35.97.35.56 0 1.13-.2 1.68-.6l.05.3c0 .07.02.1.07.12.02.03.07.03.15.03h.37c.12 0 .17-.05.17-.18V7.58c0-.13-.05-.18-.17-.18h-.52c-.15 0-.2.08-.2.18Zm-4.69 4.27h.52c.12 0 .17-.05.17-.17v-3.1c0-.41-.1-.73-.32-.95a1.25 1.25 0 0 0-.94-.35c-.57 0-1.16.2-1.73.62-.2-.42-.57-.62-1.11-.62-.55 0-1.1.2-1.64.57l-.04-.27c0-.08-.03-.1-.08-.13-.02-.02-.07-.02-.12-.02h-.4c-.12 0-.17.05-.17.17v4.1c0 .13.05.18.17.18h.52c.12 0 .17-.05.17-.18V8.37c.42-.25.84-.4 1.29-.4.25 0 .42.08.52.22.1.15.17.35.17.65v2.84c0 .12.05.17.17.17h.52c.13 0 .18-.05.18-.17V8.37c.44-.27.86-.4 1.28-.4.25 0 .42.08.52.22.1.15.17.35.17.65v2.84c0 .12.05.17.18.17Zm13.47 3.29a21.8 21.8 0 0 1-8.3 1.7c-3.96 0-7.8-1.08-10.88-2.89a.35.35 0 0 0-.15-.05c-.17 0-.27.2-.1.37a16.11 16.11 0 0 0 10.87 4.16c3.02 0 6.5-.94 8.9-2.72.42-.3.08-.74-.34-.57Zm-.08-6.74c.22-.26.57-.38 1.06-.38.25 0 .5.03.72.1l.15.02c.07 0 .12-.04.12-.17v-.25c0-.07-.02-.14-.05-.17a.54.54 0 0 0-.12-.1c-.32-.07-.64-.15-.94-.15-.7 0-1.21.2-1.6.62-.38.4-.57 1-.57 1.73 0 .74.17 1.31.54 1.7.37.4.89.6 1.58.6.37 0 .72-.05.99-.17.07-.03.12-.05.15-.1.02-.03.02-.1.02-.17v-.25c0-.13-.05-.17-.12-.17-.03 0-.07 0-.12.02-.28.07-.55.12-.8.12-.46 0-.81-.12-1.03-.37-.23-.24-.32-.64-.32-1.16v-.12c.02-.55.12-.94.34-1.19Z" clipRule="evenodd"></path>
-    <path fillRule="evenodd" d="M21.55 17.46c1.29-1.09 1.64-3.33 1.36-3.68-.12-.15-.71-.3-1.45-.3-.8 0-1.73.18-2.45.67-.22.15-.17.35.05.32.76-.1 2.5-.3 2.82.1.3.4-.35 2.03-.65 2.74-.07.23.1.3.32.15ZM18.12 7.4h-.52c-.12 0-.17.05-.17.18v4.1c0 .12.05.17.17.17h.52c.12 0 .17-.05.17-.17v-4.1c0-.1-.05-.18-.17-.18Zm.15-1.68a.58.58 0 0 0-.42-.15c-.18 0-.3.05-.4.15a.5.5 0 0 0-.15.37c0 .15.05.3.15.37.1.1.22.15.4.15.17 0 .3-.05.4-.15a.5.5 0 0 0 .14-.37c0-.15-.02-.3-.12-.37Z" clipRule="evenodd"></path>
-  </svg>
-);
-
-export function Settings() {
-  const [open, setOpen] = useState(false);
-  const [savedSettings, setSavedSettings] = useState<SettingsType>(getSettings());
-  const [tempSettings, setTempSettings] = useState<SettingsType>(savedSettings);
-  const [, setIsLoadingDefaults] = useState(false);
-  const [isDark, setIsDark] = useState(document.documentElement.classList.contains('dark'));
-
-  // Apply saved settings
-  useEffect(() => {
-    applyThemeMode(savedSettings.themeMode);
-    applyTheme(savedSettings.theme);
-
-    // Setup listener for system theme changes
-    const mediaQuery = window.matchMedia("(prefers-color-scheme: dark)");
-    const handleChange = () => {
-      if (savedSettings.themeMode === "auto") {
-        applyThemeMode("auto");
-        applyTheme(savedSettings.theme);
-      }
-    };
-
-    mediaQuery.addEventListener("change", handleChange);
-
-    return () => {
-      mediaQuery.removeEventListener("change", handleChange);
-    };
-  }, [savedSettings.themeMode, savedSettings.theme]);
-
-  // Apply temp settings for preview when dialog is open
-  useEffect(() => {
-    if (open) {
-      applyThemeMode(tempSettings.themeMode);
-      applyTheme(tempSettings.theme);
-      
-      // Update isDark state after theme is applied
-      setTimeout(() => {
-        setIsDark(document.documentElement.classList.contains('dark'));
-      }, 0);
-
-      // Setup listener for system theme changes during preview
-      const mediaQuery = window.matchMedia("(prefers-color-scheme: dark)");
-      const handleChange = () => {
-        if (tempSettings.themeMode === "auto") {
-          applyThemeMode("auto");
-          applyTheme(tempSettings.theme);
-          setTimeout(() => {
-            setIsDark(document.documentElement.classList.contains('dark'));
-          }, 0);
-        }
-      };
-
-      mediaQuery.addEventListener("change", handleChange);
-
-      return () => {
-        mediaQuery.removeEventListener("change", handleChange);
-      };
-    }
-  }, [open, tempSettings.themeMode, tempSettings.theme]);
-
-  useEffect(() => {
-    // Load settings with defaults from backend on mount
-    const loadDefaults = async () => {
-      if (!savedSettings.downloadPath) {
-        setIsLoadingDefaults(true);
-        const settingsWithDefaults = await getSettingsWithDefaults();
-        setSavedSettings(settingsWithDefaults);
-        setTempSettings(settingsWithDefaults);
-        setIsLoadingDefaults(false);
-      }
-    };
-    loadDefaults();
-  }, []);
-
-  // Reset temp settings when dialog opens
-  useEffect(() => {
-    if (open) {
-      setTempSettings(savedSettings);
-    }
-  }, [open, savedSettings]);
-
-  const handleSave = () => {
-    saveSettings(tempSettings);
-    setSavedSettings(tempSettings);
-    setOpen(false);
-  };
-
-  const handleReset = async () => {
-    const defaultSettings = await resetToDefaultSettings();
-    setTempSettings(defaultSettings);
-    setSavedSettings(defaultSettings);
-    
-    // Apply default theme mode and theme
-    applyThemeMode(defaultSettings.themeMode);
-    applyTheme(defaultSettings.theme);
-  };
-
-  const handleCancel = () => {
-    // Revert to saved settings
-    applyThemeMode(savedSettings.themeMode);
-    applyTheme(savedSettings.theme);
-    
-    setTempSettings(savedSettings);
-    setOpen(false);
-  };
-
-  const handleOpenChange = (newOpen: boolean) => {
-    if (!newOpen) {
-      // Dialog is closing, revert to saved settings
-      applyThemeMode(savedSettings.themeMode);
-      applyTheme(savedSettings.theme);
-      setTempSettings(savedSettings);
-    }
-    setOpen(newOpen);
-  };
-
-  const handleDownloadPathChange = (value: string) => {
-    setTempSettings((prev) => ({ ...prev, downloadPath: value }));
-  };
-
-  const handleDownloaderChange = (value: "auto" | "deezer" | "tidal" | "qobuz" | "amazon") => {
-    setTempSettings((prev) => ({ ...prev, downloader: value }));
-  };
-
-  const handleThemeChange = (value: string) => {
-    setTempSettings((prev) => ({ ...prev, theme: value }));
-  };
-
-  const handleThemeModeChange = (value: "auto" | "light" | "dark") => {
-    setTempSettings((prev) => ({ ...prev, themeMode: value }));
-  };
-
-  const handleBrowseFolder = async () => {
-    try {
-      // Call backend to open folder selection dialog
-      const selectedPath = await SelectFolder(tempSettings.downloadPath || "");
-      console.log("Selected path:", selectedPath);
-      
-      if (selectedPath && selectedPath.trim() !== "") {
-        setTempSettings((prev) => ({ ...prev, downloadPath: selectedPath }));
-      } else {
-        console.log("No folder selected or user cancelled");
-      }
-    } catch (error) {
-      console.error("Error selecting folder:", error);
-      alert(`Error selecting folder: ${error}`);
-    }
-  };
-
-  return (
-    <Dialog open={open} onOpenChange={handleOpenChange}>
-      <DialogTrigger asChild>
-        <Button variant="outline" size="icon">
-          <SettingsIcon className="h-5 w-5" />
-        </Button>
-      </DialogTrigger>
-      <DialogContent className="sm:max-w-[600px] flex flex-col p-6 [&>button]:hidden" aria-describedby={undefined}>
-        <div className="absolute right-4 top-4">
-          <Button
-            variant="ghost"
-            size="icon"
-            className="h-6 w-6 opacity-70 hover:opacity-100"
-            onClick={handleCancel}
-          >
-            <X className="h-4 w-4" />
-          </Button>
-        </div>
-        <DialogTitle className="text-sm font-medium">Settings</DialogTitle>
-        <div className="grid grid-cols-[1.2fr_0.8fr] gap-6 py-2">
-          {/* Left Column */}
-          <div className="space-y-4">
-            {/* Download Path */}
-            <div className="space-y-2">
-              <Label htmlFor="download-path">Download Path</Label>
-              <div className="flex gap-2">
-                <InputWithContext
-                  id="download-path"
-                  value={tempSettings.downloadPath}
-                  onChange={(e) => handleDownloadPathChange(e.target.value)}
-                  placeholder="C:\Users\YourUsername\Music"
-                />
-                <Button type="button" onClick={handleBrowseFolder} className="gap-1.5">
-                  <FolderOpen className="h-4 w-4" />
-                  Browse
-                </Button>
-              </div>
-            </div>
-
-            {/* Source Selection */}
-            <div className="space-y-2">
-              <Label htmlFor="downloader">Source</Label>
-              <Select
-                value={tempSettings.downloader}
-                onValueChange={handleDownloaderChange}
-              >
-                <SelectTrigger id="downloader">
-                  <SelectValue placeholder="Select a source" />
-                </SelectTrigger>
-                <SelectContent>
-                  <SelectItem value="auto">Auto</SelectItem>
-                  <SelectItem value="tidal">
-                    <span className="flex items-center">
-                      <TidalIcon />
-                      Tidal
-                    </span>
-                  </SelectItem>
-                  <SelectItem value="deezer">
-                    <span className="flex items-center">
-                      <DeezerIcon />
-                      Deezer
-                    </span>
-                  </SelectItem>
-                  <SelectItem value="qobuz">
-                    <span className="flex items-center">
-                      <QobuzIcon />
-                      Qobuz
-                    </span>
-                  </SelectItem>
-                  <SelectItem value="amazon">
-                    <span className="flex items-center">
-                      <AmazonIcon />
-                      Amazon Music
-                    </span>
-                  </SelectItem>
-                </SelectContent>
-              </Select>
-            </div>
-
-            {/* Theme Mode Selection */}
-            <div className="space-y-2">
-              <Label htmlFor="theme-mode">Mode</Label>
-              <Select value={tempSettings.themeMode} onValueChange={handleThemeModeChange}>
-                <SelectTrigger id="theme-mode">
-                  <SelectValue placeholder="Select theme mode" />
-                </SelectTrigger>
-                <SelectContent>
-                  <SelectItem value="auto">Auto</SelectItem>
-                  <SelectItem value="light">Light</SelectItem>
-                  <SelectItem value="dark">Dark</SelectItem>
-                </SelectContent>
-              </Select>
-            </div>
-
-            {/* Accent Selection */}
-            <div className="space-y-2">
-              <Label htmlFor="theme">Accent</Label>
-              <Select value={tempSettings.theme} onValueChange={handleThemeChange}>
-                <SelectTrigger id="theme">
-                  <SelectValue placeholder="Select a theme" />
-                </SelectTrigger>
-                <SelectContent>
-                  {themes.map((theme) => (
-                    <SelectItem key={theme.name} value={theme.name}>
-                      <span className="flex items-center gap-2">
-                        <span 
-                          className="w-3 h-3 rounded-full border border-border" 
-                          style={{ 
-                            backgroundColor: isDark
-                              ? theme.cssVars.dark.primary 
-                              : theme.cssVars.light.primary 
-                          }}
-                        />
-                        {theme.label}
-                      </span>
-                    </SelectItem>
-                  ))}
-                </SelectContent>
-              </Select>
-            </div>
-          </div>
-
-          {/* Right Column */}
-          <div className="space-y-4">
-            {/* Filename Format */}
-            <div className="space-y-2">
-              <Label className="text-sm">Filename Format</Label>
-              <RadioGroup
-                value={tempSettings.filenameFormat}
-                onValueChange={(value) => setTempSettings(prev => ({ ...prev, filenameFormat: value as any }))}
-              >
-                <div className="flex items-center space-x-2">
-                  <RadioGroupItem value="title-artist" id="title-artist" />
-                  <Label htmlFor="title-artist" className="cursor-pointer font-normal text-sm">Title - Artist</Label>
-                </div>
-                <div className="flex items-center space-x-2">
-                  <RadioGroupItem value="artist-title" id="artist-title" />
-                  <Label htmlFor="artist-title" className="cursor-pointer font-normal text-sm">Artist - Title</Label>
-                </div>
-                <div className="flex items-center space-x-2">
-                  <RadioGroupItem value="title" id="title" />
-                  <Label htmlFor="title" className="cursor-pointer font-normal text-sm">Title</Label>
-                </div>
-              </RadioGroup>
-            </div>
-
-            <div className="border-t" />
-
-            {/* Folder Settings */}
-            <div className="space-y-2">
-              <h3 className="font-medium text-sm">Folder Settings</h3>
-              <div className="flex items-center gap-2">
-                <Checkbox
-                  id="track-number"
-                  checked={tempSettings.trackNumber}
-                  onCheckedChange={(checked) => setTempSettings(prev => ({ ...prev, trackNumber: checked as boolean }))}
-                />
-                <Label htmlFor="track-number" className="cursor-pointer text-sm">Track Number</Label>
-                <Tooltip>
-                  <TooltipTrigger asChild>
-                    <Info className="h-3.5 w-3.5 text-muted-foreground cursor-help" />
-                  </TooltipTrigger>
-                  <TooltipContent side="top" className="max-w-xs">
-                    <p className="text-xs text-center">Adds track numbers to filenames. Uses album track numbers when Album Subfolder is enabled, otherwise uses playlist position</p>
-                  </TooltipContent>
-                </Tooltip>
-              </div>
-              <div className="flex items-center gap-2">
-                <Checkbox
-                  id="artist-subfolder"
-                  checked={tempSettings.artistSubfolder}
-                  onCheckedChange={(checked) => setTempSettings(prev => ({ ...prev, artistSubfolder: checked as boolean }))}
-                />
-                <Label htmlFor="artist-subfolder" className="cursor-pointer text-sm">Artist Subfolder</Label>
-                <Tooltip>
-                  <TooltipTrigger asChild>
-                    <Info className="h-3.5 w-3.5 text-muted-foreground cursor-help" />
-                  </TooltipTrigger>
-                  <TooltipContent side="top" className="max-w-xs">
-                    <p className="text-xs text-center">Playlist only</p>
-                  </TooltipContent>
-                </Tooltip>
-              </div>
-              <div className="flex items-center gap-2">
-                <Checkbox
-                  id="album-subfolder"
-                  checked={tempSettings.albumSubfolder}
-                  onCheckedChange={(checked) => setTempSettings(prev => ({ ...prev, albumSubfolder: checked as boolean }))}
-                />
-                <Label htmlFor="album-subfolder" className="cursor-pointer text-sm">Album Subfolder</Label>
-                <Tooltip>
-                  <TooltipTrigger asChild>
-                    <Info className="h-3.5 w-3.5 text-muted-foreground cursor-help" />
-                  </TooltipTrigger>
-                  <TooltipContent side="top" className="max-w-xs">
-                    <p className="text-xs text-center">Playlist & Discography</p>
-                  </TooltipContent>
-                </Tooltip>
-              </div>
-            </div>
-
-            <div className="border-t" />
-
-            {/* Sound Effects */}
-            <div className="flex items-center justify-between">
-              <div className="flex items-center gap-2">
-                <Volume2 className="h-4 w-4 text-muted-foreground" />
-                <Label htmlFor="sfx-enabled" className="cursor-pointer text-sm">Sound Effects</Label>
-              </div>
-              <Switch
-                id="sfx-enabled"
-                checked={tempSettings.sfxEnabled}
-                onCheckedChange={(checked) => setTempSettings(prev => ({ ...prev, sfxEnabled: checked }))}
-              />
-            </div>
-          </div>
-        </div>
-        <DialogFooter className="gap-2 sm:justify-between">
-          <Button variant="outline" onClick={handleReset} className="gap-1.5">
-            <RotateCcw className="h-4 w-4" />
-            Reset to Default
-          </Button>
-          <div className="flex gap-2">
-            <Button variant="outline" onClick={handleCancel}>
-              Cancel
-            </Button>
-            <Button onClick={handleSave} className="gap-1.5">
-              <Save className="h-4 w-4" />
-              Save Changes
-            </Button>
-          </div>
-        </DialogFooter>
-      </DialogContent>
-    </Dialog>
-  );
-}

frontend/src/components/SettingsPage.tsx

@@ -9,12 +9,11 @@ import {
   SelectTrigger,
   SelectValue,
 } from "@/components/ui/select";
-import { Checkbox } from "@/components/ui/checkbox";
-import { RadioGroup, RadioGroupItem } from "@/components/ui/radio-group";
+
 import { Tooltip, TooltipContent, TooltipTrigger } from "@/components/ui/tooltip";
-import { FolderOpen, Save, RotateCcw, Info, Volume2 } from "lucide-react";
+import { FolderOpen, Save, RotateCcw, Info } from "lucide-react";
 import { Switch } from "@/components/ui/switch";
-import { getSettings, getSettingsWithDefaults, saveSettings, resetToDefaultSettings, applyThemeMode, applyFont, FONT_OPTIONS, type Settings as SettingsType, type FontFamily } from "@/lib/settings";
+import { getSettings, getSettingsWithDefaults, saveSettings, resetToDefaultSettings, applyThemeMode, applyFont, FONT_OPTIONS, FOLDER_PRESETS, FILENAME_PRESETS, TEMPLATE_VARIABLES, type Settings as SettingsType, type FontFamily, type FolderPreset, type FilenamePreset } from "@/lib/settings";
 import { themes, applyTheme } from "@/lib/themes";
 import { SelectFolder } from "../../wailsjs/go/main/App";
 import { toastWithSound as toast } from "@/lib/toast-with-sound";
@@ -27,12 +26,6 @@ const TidalIcon = () => (
   </svg>
 );
 
-const DeezerIcon = () => (
-  <svg viewBox="0 0 24 24" className="inline-block w-[1.1em] h-[1.1em] mr-2 fill-muted-foreground">
-    <path d="M18.77 5.55c.19-1.07.46-1.75.76-1.75.56 0 1.02 2.34 1.02 5.23 0 2.89-.46 5.23-1.02 5.23-.23 0-.44-.4-.61-1.06-.27 2.43-.83 4.11-1.48 4.11-.5 0-.96-1-1.26-2.6-.2 3.03-.73 5.17-1.33 5.17-.39 0-.73-.85-.99-2.23-.31 2.85-1.03 4.85-1.86 4.85-.83 0-1.55-2-1.86-4.85-.25 1.38-.6 2.23-.99 2.23-.6 0-1.12-2.14-1.33-5.16-.3 1.58-.75 2.6-1.26 2.6-.65 0-1.2-1.68-1.48-4.12-.17.66-.38 1.06-.61 1.06-.56 0-1.02-2.34-1.02-5.23 0-2.89.46-5.23 1.02-5.23.3 0 .57.68.76 1.75C5.53 3.7 6 2.5 6.56 2.5c.66 0 1.22 1.7 1.49 4.17.26-1.8.66-2.94 1.1-2.94.63 0 1.16 2.25 1.36 5.4.36-1.62.9-2.63 1.5-2.63.58 0 1.12 1.01 1.49 2.62.2-3.14.72-5.4 1.35-5.4.44 0 .84 1.15 1.1 2.95.27-2.47.84-4.17 1.49-4.17.55 0 1.03 1.2 1.33 3.05ZM2 8.52c0-1.3.26-2.34.58-2.34.32 0 .57 1.05.57 2.34 0 1.29-.25 2.34-.57 2.34-.32 0-.58-1.05-.58-2.34Zm18.85 0c0-1.3.25-2.34.57-2.34.32 0 .58 1.05.58 2.34 0 1.29-.26 2.34-.58 2.34-.32 0-.57-1.05-.57-2.34Z"></path>
-  </svg>
-);
-
 const QobuzIcon = () => (
   <svg viewBox="0 0 24 24" className="inline-block w-[1.1em] h-[1.1em] mr-2 fill-muted-foreground">
     <path d="M21.744 9.815C19.836 1.261 8.393-1 3.55 6.64-.618 13.214 4 22 11.988 22c2.387 0 4.63-.83 6.394-2.304l2.252 2.252 1.224-1.224-2.252-2.253c1.983-2.407 2.823-5.586 2.138-8.656Zm-3.508 7.297L16.4 15.275c-.786-.787-2.017.432-1.224 1.225L17 18.326C10.29 23.656.5 16 5.16 7.667c3.502-6.264 13.172-4.348 14.707 2.574.529 2.385-.06 4.987-1.63 6.87Z"></path>
@@ -140,34 +133,6 @@ export function SettingsPage() {
             </div>
           </div>
 
-          {/* Source Selection */}
-          <div className="space-y-2">
-            <Label htmlFor="downloader">Source</Label>
-            <Select
-              value={tempSettings.downloader}
-              onValueChange={(value: "auto" | "deezer" | "tidal" | "qobuz" | "amazon") => setTempSettings((prev) => ({ ...prev, downloader: value }))}
-            >
-              <SelectTrigger id="downloader">
-                <SelectValue placeholder="Select a source" />
-              </SelectTrigger>
-              <SelectContent>
-                <SelectItem value="auto">Auto</SelectItem>
-                <SelectItem value="tidal">
-                  <span className="flex items-center"><TidalIcon />Tidal</span>
-                </SelectItem>
-                <SelectItem value="deezer">
-                  <span className="flex items-center"><DeezerIcon />Deezer</span>
-                </SelectItem>
-                <SelectItem value="qobuz">
-                  <span className="flex items-center"><QobuzIcon />Qobuz</span>
-                </SelectItem>
-                <SelectItem value="amazon">
-                  <span className="flex items-center"><AmazonIcon />Amazon Music</span>
-                </SelectItem>
-              </SelectContent>
-            </Select>
-          </div>
-
           {/* Theme Mode */}
           <div className="space-y-2">
             <Label htmlFor="theme-mode">Mode</Label>
@@ -233,92 +198,9 @@ export function SettingsPage() {
               </SelectContent>
             </Select>
           </div>
-        </div>
-
-        {/* Right Column */}
-        <div className="space-y-4">
-          {/* Filename Format */}
-          <div className="space-y-2">
-            <Label className="text-sm">Filename Format</Label>
-            <RadioGroup
-              value={tempSettings.filenameFormat}
-              onValueChange={(value) => setTempSettings(prev => ({ ...prev, filenameFormat: value as any }))}
-            >
-              <div className="flex items-center space-x-2">
-                <RadioGroupItem value="title-artist" id="title-artist" />
-                <Label htmlFor="title-artist" className="cursor-pointer font-normal text-sm">Title - Artist</Label>
-              </div>
-              <div className="flex items-center space-x-2">
-                <RadioGroupItem value="artist-title" id="artist-title" />
-                <Label htmlFor="artist-title" className="cursor-pointer font-normal text-sm">Artist - Title</Label>
-              </div>
-              <div className="flex items-center space-x-2">
-                <RadioGroupItem value="title" id="title" />
-                <Label htmlFor="title" className="cursor-pointer font-normal text-sm">Title</Label>
-              </div>
-            </RadioGroup>
-          </div>
-
-          <div className="border-t pt-4" />
-
-          {/* Folder Settings */}
-          <div className="space-y-2">
-            <h3 className="font-medium text-sm">Folder Settings</h3>
-            <div className="flex items-center gap-2">
-              <Checkbox
-                id="track-number"
-                checked={tempSettings.trackNumber}
-                onCheckedChange={(checked) => setTempSettings(prev => ({ ...prev, trackNumber: checked as boolean }))}
-              />
-              <Label htmlFor="track-number" className="cursor-pointer text-sm">Track Number</Label>
-              <Tooltip>
-                <TooltipTrigger asChild>
-                  <Info className="h-3.5 w-3.5 text-muted-foreground cursor-help" />
-                </TooltipTrigger>
-                <TooltipContent side="top" className="max-w-xs">
-                  <p className="text-xs text-center">Adds track numbers to filenames</p>
-                </TooltipContent>
-              </Tooltip>
-            </div>
-            <div className="flex items-center gap-2">
-              <Checkbox
-                id="artist-subfolder"
-                checked={tempSettings.artistSubfolder}
-                onCheckedChange={(checked) => setTempSettings(prev => ({ ...prev, artistSubfolder: checked as boolean }))}
-              />
-              <Label htmlFor="artist-subfolder" className="cursor-pointer text-sm">Artist Subfolder</Label>
-              <Tooltip>
-                <TooltipTrigger asChild>
-                  <Info className="h-3.5 w-3.5 text-muted-foreground cursor-help" />
-                </TooltipTrigger>
-                <TooltipContent side="top" className="max-w-xs">
-                  <p className="text-xs text-center">Playlist only</p>
-                </TooltipContent>
-              </Tooltip>
-            </div>
-            <div className="flex items-center gap-2">
-              <Checkbox
-                id="album-subfolder"
-                checked={tempSettings.albumSubfolder}
-                onCheckedChange={(checked) => setTempSettings(prev => ({ ...prev, albumSubfolder: checked as boolean }))}
-              />
-              <Label htmlFor="album-subfolder" className="cursor-pointer text-sm">Album Subfolder</Label>
-              <Tooltip>
-                <TooltipTrigger asChild>
-                  <Info className="h-3.5 w-3.5 text-muted-foreground cursor-help" />
-                </TooltipTrigger>
-                <TooltipContent side="top" className="max-w-xs">
-                  <p className="text-xs text-center">Playlist & Discography</p>
-                </TooltipContent>
-              </Tooltip>
-            </div>
-          </div>
-
-          <div className="border-t pt-4" />
 
           {/* Sound Effects */}
           <div className="flex items-center gap-3">
-            <Volume2 className="h-4 w-4 text-muted-foreground" />
             <Label htmlFor="sfx-enabled" className="cursor-pointer text-sm">Sound Effects</Label>
             <Switch
               id="sfx-enabled"
@@ -327,6 +209,187 @@ export function SettingsPage() {
             />
           </div>
         </div>
+
+        {/* Right Column */}
+        <div className="space-y-4">
+          {/* Source Selection */}
+          <div className="space-y-2">
+            <Label htmlFor="downloader" className="text-sm">Source</Label>
+            <div className="flex gap-2">
+              <Select
+                value={tempSettings.downloader}
+                onValueChange={(value: "auto" | "tidal" | "qobuz" | "amazon") => setTempSettings((prev) => ({ ...prev, downloader: value }))}
+              >
+                <SelectTrigger id="downloader" className="h-9 w-fit">
+                  <SelectValue placeholder="Select a source" />
+                </SelectTrigger>
+                <SelectContent>
+                  <SelectItem value="auto">Auto</SelectItem>
+                  <SelectItem value="tidal">
+                    <span className="flex items-center"><TidalIcon />Tidal</span>
+                  </SelectItem>
+                  <SelectItem value="qobuz">
+                    <span className="flex items-center"><QobuzIcon />Qobuz</span>
+                  </SelectItem>
+                  <SelectItem value="amazon">
+                    <span className="flex items-center"><AmazonIcon />Amazon Music</span>
+                  </SelectItem>
+                </SelectContent>
+              </Select>
+              {/* Quality dropdown for Tidal */}
+              {tempSettings.downloader === "tidal" && (
+                <Select
+                  value={tempSettings.tidalQuality}
+                  onValueChange={(value: "LOSSLESS" | "HI_RES_LOSSLESS") => setTempSettings((prev) => ({ ...prev, tidalQuality: value }))}
+                >
+                  <SelectTrigger className="h-9 w-fit">
+                    <SelectValue />
+                  </SelectTrigger>
+                  <SelectContent>
+                    <SelectItem value="LOSSLESS">Lossless (16-bit/CD Quality)</SelectItem>
+                    <SelectItem value="HI_RES_LOSSLESS">Hi-Res Lossless (24-bit/48kHz+)</SelectItem>
+                  </SelectContent>
+                </Select>
+              )}
+              {/* Quality dropdown for Qobuz */}
+              {tempSettings.downloader === "qobuz" && (
+                <Select
+                  value={tempSettings.qobuzQuality}
+                  onValueChange={(value: "6" | "7" | "27") => setTempSettings((prev) => ({ ...prev, qobuzQuality: value }))}
+                >
+                  <SelectTrigger className="h-9 w-fit">
+                    <SelectValue />
+                  </SelectTrigger>
+                  <SelectContent>
+                    <SelectItem value="6">FLAC 16-bit (CD Quality)</SelectItem>
+                    <SelectItem value="7">FLAC 24-bit</SelectItem>
+                    <SelectItem value="27">Hi-Res (24-bit/96kHz+)</SelectItem>
+                  </SelectContent>
+                </Select>
+              )}
+            </div>
+          </div>
+
+          {/* Embed Lyrics & Embed Max Quality Cover */}
+          <div className="flex items-center gap-6">
+            <div className="flex items-center gap-3">
+              <Label htmlFor="embed-lyrics" className="cursor-pointer text-sm">Embed Lyrics</Label>
+              <Switch
+                id="embed-lyrics"
+                checked={tempSettings.embedLyrics}
+                onCheckedChange={(checked) => setTempSettings(prev => ({ ...prev, embedLyrics: checked }))}
+              />
+            </div>
+            <div className="flex items-center gap-3">
+              <Label htmlFor="embed-max-quality-cover" className="cursor-pointer text-sm">Embed Max Quality Cover</Label>
+              <Switch
+                id="embed-max-quality-cover"
+                checked={tempSettings.embedMaxQualityCover}
+                onCheckedChange={(checked) => setTempSettings(prev => ({ ...prev, embedMaxQualityCover: checked }))}
+              />
+            </div>
+          </div>
+
+          <div className="border-t" />
+
+          {/* Folder Structure */}
+          <div className="space-y-2">
+            <div className="flex items-center gap-2">
+              <Label className="text-sm">Folder Structure</Label>
+              <Tooltip>
+                <TooltipTrigger asChild>
+                  <Info className="h-3.5 w-3.5 text-muted-foreground cursor-help" />
+                </TooltipTrigger>
+                <TooltipContent side="top">
+                  <p className="text-xs whitespace-nowrap">Variables: {TEMPLATE_VARIABLES.map(v => v.key).join(", ")}</p>
+                </TooltipContent>
+              </Tooltip>
+            </div>
+            <Select
+              value={tempSettings.folderPreset}
+              onValueChange={(value: FolderPreset) => {
+                const preset = FOLDER_PRESETS[value];
+                setTempSettings(prev => ({
+                  ...prev,
+                  folderPreset: value,
+                  folderTemplate: value === "custom" ? prev.folderTemplate : preset.template
+                }));
+              }}
+            >
+              <SelectTrigger className="h-9">
+                <SelectValue />
+              </SelectTrigger>
+              <SelectContent>
+                {Object.entries(FOLDER_PRESETS).map(([key, { label }]) => (
+                  <SelectItem key={key} value={key}>{label}</SelectItem>
+                ))}
+              </SelectContent>
+            </Select>
+            {tempSettings.folderPreset === "custom" && (
+              <InputWithContext
+                value={tempSettings.folderTemplate}
+                onChange={(e) => setTempSettings(prev => ({ ...prev, folderTemplate: e.target.value }))}
+                placeholder="{artist}/{album}"
+                className="h-9 text-sm"
+              />
+            )}
+            {tempSettings.folderTemplate && (
+              <p className="text-xs text-muted-foreground">
+                Preview: <span className="font-mono">{tempSettings.folderTemplate.replace(/\{artist\}/g, "Taylor Swift").replace(/\{album\}/g, "1989").replace(/\{year\}/g, "2014")}/</span>
+              </p>
+            )}
+          </div>
+
+          <div className="border-t" />
+
+          {/* Filename Format */}
+          <div className="space-y-2">
+            <div className="flex items-center gap-2">
+              <Label className="text-sm">Filename Format</Label>
+              <Tooltip>
+                <TooltipTrigger asChild>
+                  <Info className="h-3.5 w-3.5 text-muted-foreground cursor-help" />
+                </TooltipTrigger>
+                <TooltipContent side="top">
+                  <p className="text-xs whitespace-nowrap">Variables: {TEMPLATE_VARIABLES.map(v => v.key).join(", ")}</p>
+                </TooltipContent>
+              </Tooltip>
+            </div>
+            <Select
+              value={tempSettings.filenamePreset}
+              onValueChange={(value: FilenamePreset) => {
+                const preset = FILENAME_PRESETS[value];
+                setTempSettings(prev => ({
+                  ...prev,
+                  filenamePreset: value,
+                  filenameTemplate: value === "custom" ? prev.filenameTemplate : preset.template
+                }));
+              }}
+            >
+              <SelectTrigger className="h-9">
+                <SelectValue />
+              </SelectTrigger>
+              <SelectContent>
+                {Object.entries(FILENAME_PRESETS).map(([key, { label }]) => (
+                  <SelectItem key={key} value={key}>{label}</SelectItem>
+                ))}
+              </SelectContent>
+            </Select>
+            {tempSettings.filenamePreset === "custom" && (
+              <InputWithContext
+                value={tempSettings.filenameTemplate}
+                onChange={(e) => setTempSettings(prev => ({ ...prev, filenameTemplate: e.target.value }))}
+                placeholder="{track}. {title}"
+                className="h-9 text-sm"
+              />
+            )}
+            {tempSettings.filenameTemplate && (
+              <p className="text-xs text-muted-foreground">
+                Preview: <span className="font-mono">{tempSettings.filenameTemplate.replace(/\{artist\}/g, "Taylor Swift").replace(/\{title\}/g, "Shake It Off").replace(/\{track\}/g, "01").replace(/\{year\}/g, "2014")}.flac</span>
+              </p>
+            )}
+          </div>
+        </div>
       </div>
 
       {/* Actions */}

frontend/src/components/Sidebar.tsx

@@ -1,4 +1,4 @@
-import { Home, Settings, Bug, Activity, LayoutGrid } from "lucide-react";
+import { Home, Settings, Bug, Activity, FileMusic, LayoutGrid } from "lucide-react";
 import {
   Tooltip,
   TooltipContent,
@@ -7,7 +7,7 @@ import {
 import { Button } from "@/components/ui/button";
 import { openExternal } from "@/lib/utils";
 
-export type PageType = "main" | "settings" | "debug" | "audio-analysis";
+export type PageType = "main" | "settings" | "debug" | "audio-analysis" | "audio-converter";
 
 interface SidebarProps {
   currentPage: PageType;
@@ -19,6 +19,7 @@ export function Sidebar({ currentPage, onPageChange }: SidebarProps) {
     { id: "main" as PageType, icon: Home, label: "Home" },
     { id: "settings" as PageType, icon: Settings, label: "Settings" },
     { id: "audio-analysis" as PageType, icon: Activity, label: "Audio Quality Analyzer" },
+    { id: "audio-converter" as PageType, icon: FileMusic, label: "Audio Converter" },
     { id: "debug" as PageType, icon: Bug, label: "Debug Logs" },
   ];
 

frontend/src/components/TrackInfo.tsx

@@ -9,7 +9,7 @@ import {
   TooltipTrigger,
 } from "@/components/ui/tooltip";
 import type { TrackMetadata, TrackAvailability } from "@/types/api";
-import { TidalIcon, DeezerIcon, QobuzIcon, AmazonIcon } from "./PlatformIcons";
+import { TidalIcon, QobuzIcon, AmazonIcon } from "./PlatformIcons";
 
 interface TrackInfoProps {
   track: TrackMetadata & { album_name: string; release_date: string };
@@ -25,7 +25,7 @@ interface TrackInfoProps {
   checkingAvailability?: boolean;
   availability?: TrackAvailability;
   downloadingCover?: boolean;
-  onDownload: (isrc: string, name: string, artists: string, albumName?: string, spotifyId?: string) => void;
+  onDownload: (isrc: string, name: string, artists: string, albumName?: string, spotifyId?: string, playlistName?: string, durationMs?: number, position?: number, albumArtist?: string, releaseDate?: string, coverUrl?: string, spotifyTrackNumber?: number, spotifyDiscNumber?: number, spotifyTotalTracks?: number) => void;
   onDownloadLyrics?: (spotifyId: string, name: string, artists: string, albumName?: string) => void;
   onCheckAvailability?: (spotifyId: string, isrc?: string) => void;
   onDownloadCover?: (coverUrl: string, trackName: string, artistName: string, albumName?: string) => void;
@@ -120,7 +120,7 @@ export function TrackInfo({
             {track.isrc && (
               <div className="flex gap-2 flex-wrap">
                 <Button
-                  onClick={() => onDownload(track.isrc, track.name, track.artists, track.album_name, track.spotify_id)}
+                  onClick={() => onDownload(track.isrc, track.name, track.artists, track.album_name, track.spotify_id, undefined, track.duration_ms, track.track_number, track.album_artist, track.release_date, track.images, track.track_number, track.disc_number, track.total_tracks)}
                   disabled={isDownloading || downloadingTrack === track.isrc}
                 >
                   {downloadingTrack === track.isrc ? (
@@ -179,7 +179,6 @@ export function TrackInfo({
                       {availability ? (
                         <div className="flex items-center gap-2">
                           <TidalIcon className={`w-4 h-4 ${availability.tidal ? "text-green-500" : "text-red-500"}`} />
-                          <DeezerIcon className={`w-4 h-4 ${availability.deezer ? "text-green-500" : "text-red-500"}`} />
                           <QobuzIcon className={`w-4 h-4 ${availability.qobuz ? "text-green-500" : "text-red-500"}`} />
                           <AmazonIcon className={`w-4 h-4 ${availability.amazon ? "text-green-500" : "text-red-500"}`} />
                         </div>

frontend/src/components/TrackList.tsx

@@ -16,7 +16,7 @@ import {
   PaginationPrevious,
 } from "@/components/ui/pagination";
 import type { TrackMetadata, TrackAvailability } from "@/types/api";
-import { TidalIcon, DeezerIcon, QobuzIcon, AmazonIcon } from "./PlatformIcons";
+import { TidalIcon, QobuzIcon, AmazonIcon } from "./PlatformIcons";
 
 interface TrackListProps {
   tracks: TrackMetadata[];
@@ -49,7 +49,7 @@ interface TrackListProps {
   downloadingCoverTrack?: string | null;
   onToggleTrack: (isrc: string) => void;
   onToggleSelectAll: (tracks: TrackMetadata[]) => void;
-  onDownloadTrack: (isrc: string, name: string, artists: string, albumName: string, spotifyId?: string, folderName?: string, isArtistDiscography?: boolean) => void;
+  onDownloadTrack: (isrc: string, name: string, artists: string, albumName: string, spotifyId?: string, folderName?: string, durationMs?: number, position?: number, albumArtist?: string, releaseDate?: string, coverUrl?: string, spotifyTrackNumber?: number, spotifyDiscNumber?: number, spotifyTotalTracks?: number) => void;
   onDownloadLyrics?: (spotifyId: string, name: string, artists: string, albumName: string, folderName?: string, isArtistDiscography?: boolean, position?: number) => void;
   onCheckAvailability?: (spotifyId: string, isrc?: string) => void;
   onDownloadCover?: (coverUrl: string, trackName: string, artistName: string, albumName: string, folderName?: string, isArtistDiscography?: boolean, position?: number, trackId?: string) => void;
@@ -301,7 +301,7 @@ export function TrackList({
                           <TooltipTrigger asChild>
                             <Button
                               onClick={() =>
-                                onDownloadTrack(track.isrc, track.name, track.artists, track.album_name, track.spotify_id, folderName, isArtistDiscography)
+                                onDownloadTrack(track.isrc, track.name, track.artists, track.album_name, track.spotify_id, folderName, track.duration_ms, startIndex + index + 1, track.album_artist, track.release_date, track.images, track.track_number, track.disc_number, track.total_tracks)
                               }
                               size="sm"
                               disabled={isDownloading || downloadingTrack === track.isrc}
@@ -415,7 +415,6 @@ export function TrackList({
                             {availabilityMap?.has(track.spotify_id) ? (
                               <div className="flex items-center gap-2">
                                 <TidalIcon className={`w-4 h-4 ${availabilityMap.get(track.spotify_id)?.tidal ? "text-green-500" : "text-red-500"}`} />
-                                <DeezerIcon className={`w-4 h-4 ${availabilityMap.get(track.spotify_id)?.deezer ? "text-green-500" : "text-red-500"}`} />
                                 <QobuzIcon className={`w-4 h-4 ${availabilityMap.get(track.spotify_id)?.qobuz ? "text-green-500" : "text-red-500"}`} />
                                 <AmazonIcon className={`w-4 h-4 ${availabilityMap.get(track.spotify_id)?.amazon ? "text-green-500" : "text-red-500"}`} />
                               </div>

frontend/src/components/ui/toggle-group.tsx

@@ -0,0 +1,83 @@
+"use client"
+
+import * as React from "react"
+import * as ToggleGroupPrimitive from "@radix-ui/react-toggle-group"
+import { type VariantProps } from "class-variance-authority"
+
+import { cn } from "@/lib/utils"
+import { toggleVariants } from "@/components/ui/toggle"
+
+const ToggleGroupContext = React.createContext<
+  VariantProps<typeof toggleVariants> & {
+    spacing?: number
+  }
+>({
+  size: "default",
+  variant: "default",
+  spacing: 0,
+})
+
+function ToggleGroup({
+  className,
+  variant,
+  size,
+  spacing = 0,
+  children,
+  ...props
+}: React.ComponentProps<typeof ToggleGroupPrimitive.Root> &
+  VariantProps<typeof toggleVariants> & {
+    spacing?: number
+  }) {
+  return (
+    <ToggleGroupPrimitive.Root
+      data-slot="toggle-group"
+      data-variant={variant}
+      data-size={size}
+      data-spacing={spacing}
+      style={{ "--gap": spacing } as React.CSSProperties}
+      className={cn(
+        "group/toggle-group flex w-fit items-center gap-[--spacing(var(--gap))] rounded-md data-[spacing=default]:data-[variant=outline]:shadow-xs",
+        className
+      )}
+      {...props}
+    >
+      <ToggleGroupContext.Provider value={{ variant, size, spacing }}>
+        {children}
+      </ToggleGroupContext.Provider>
+    </ToggleGroupPrimitive.Root>
+  )
+}
+
+function ToggleGroupItem({
+  className,
+  children,
+  variant,
+  size,
+  ...props
+}: React.ComponentProps<typeof ToggleGroupPrimitive.Item> &
+  VariantProps<typeof toggleVariants>) {
+  const context = React.useContext(ToggleGroupContext)
+
+  return (
+    <ToggleGroupPrimitive.Item
+      data-slot="toggle-group-item"
+      data-variant={context.variant || variant}
+      data-size={context.size || size}
+      data-spacing={context.spacing}
+      className={cn(
+        toggleVariants({
+          variant: context.variant || variant,
+          size: context.size || size,
+        }),
+        "w-auto min-w-0 shrink-0 px-3 focus:z-10 focus-visible:z-10",
+        "data-[spacing=0]:rounded-none data-[spacing=0]:shadow-none data-[spacing=0]:first:rounded-l-md data-[spacing=0]:last:rounded-r-md data-[spacing=0]:data-[variant=outline]:border-l-0 data-[spacing=0]:data-[variant=outline]:first:border-l",
+        className
+      )}
+      {...props}
+    >
+      {children}
+    </ToggleGroupPrimitive.Item>
+  )
+}
+
+export { ToggleGroup, ToggleGroupItem }

frontend/src/components/ui/toggle.tsx

@@ -0,0 +1,47 @@
+"use client"
+
+import * as React from "react"
+import * as TogglePrimitive from "@radix-ui/react-toggle"
+import { cva, type VariantProps } from "class-variance-authority"
+
+import { cn } from "@/lib/utils"
+
+const toggleVariants = cva(
+  "inline-flex items-center justify-center gap-2 rounded-md text-sm font-medium hover:bg-muted hover:text-muted-foreground disabled:pointer-events-none disabled:opacity-50 data-[state=on]:bg-accent data-[state=on]:text-accent-foreground [&_svg]:pointer-events-none [&_svg:not([class*='size-'])]:size-4 [&_svg]:shrink-0 focus-visible:border-ring focus-visible:ring-ring/50 focus-visible:ring-[3px] outline-none transition-[color,box-shadow] aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive whitespace-nowrap",
+  {
+    variants: {
+      variant: {
+        default: "bg-transparent",
+        outline:
+          "border border-input bg-transparent shadow-xs hover:bg-accent hover:text-accent-foreground",
+      },
+      size: {
+        default: "h-9 px-2 min-w-9",
+        sm: "h-8 px-1.5 min-w-8",
+        lg: "h-10 px-2.5 min-w-10",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+      size: "default",
+    },
+  }
+)
+
+function Toggle({
+  className,
+  variant,
+  size,
+  ...props
+}: React.ComponentProps<typeof TogglePrimitive.Root> &
+  VariantProps<typeof toggleVariants>) {
+  return (
+    <TogglePrimitive.Root
+      data-slot="toggle"
+      className={cn(toggleVariants({ variant, size, className }))}
+      {...props}
+    />
+  )
+}
+
+export { Toggle, toggleVariants }

frontend/src/hooks/useAudioAnalysis.ts

@@ -1,13 +1,63 @@
-import { useState, useCallback } from "react";
+import { useState, useCallback, useEffect } from "react";
 import { AnalyzeTrack } from "../../wailsjs/go/main/App";
 import type { AnalysisResult } from "@/types/api";
 import { logger } from "@/lib/logger";
 import { toastWithSound as toast } from "@/lib/toast-with-sound";
+import { setSpectrumCache, getSpectrumCache, clearSpectrumCache } from "@/lib/spectrum-cache";
+
+const STORAGE_KEY = "spotiflac_audio_analysis_state";
 
 export function useAudioAnalysis() {
   const [analyzing, setAnalyzing] = useState(false);
-  const [result, setResult] = useState<AnalysisResult | null>(null);
+  const [result, setResult] = useState<AnalysisResult | null>(() => {
+    // Load from sessionStorage on mount - only detail, no spectrum
+    try {
+      const saved = sessionStorage.getItem(STORAGE_KEY);
+      if (saved) {
+        const parsed = JSON.parse(saved);
+        if (parsed.filePath && parsed.result) {
+          // Return result WITHOUT spectrum - spectrum will be loaded async
+          return {
+            ...parsed.result,
+            spectrum: undefined,
+          };
+        }
+      }
+    } catch (err) {
+      console.error("Failed to load saved analysis state:", err);
+    }
+    return null;
+  });
+  const [selectedFilePath, setSelectedFilePath] = useState<string>(() => {
+    // Load file path from sessionStorage
+    try {
+      const saved = sessionStorage.getItem(STORAGE_KEY);
+      if (saved) {
+        const parsed = JSON.parse(saved);
+        return parsed.filePath || "";
+      }
+    } catch (err) {
+      // Ignore
+    }
+    return "";
+  });
   const [error, setError] = useState<string | null>(null);
+  const [spectrumLoading, setSpectrumLoading] = useState(() => {
+    // If result exists from sessionStorage, show loading for spectrum
+    try {
+      const saved = sessionStorage.getItem(STORAGE_KEY);
+      if (saved) {
+        const parsed = JSON.parse(saved);
+        if (parsed.filePath && parsed.result) {
+          // Always show loading initially, will be resolved async
+          return true;
+        }
+      }
+    } catch (err) {
+      // Ignore
+    }
+    return false;
+  });
 
   const analyzeFile = useCallback(async (filePath: string) => {
     if (!filePath) {
@@ -18,6 +68,7 @@ export function useAudioAnalysis() {
     setAnalyzing(true);
     setError(null);
     setResult(null);
+    setSelectedFilePath(filePath);
 
     try {
       logger.info(`Analyzing audio file: ${filePath}`);
@@ -29,7 +80,24 @@ export function useAudioAnalysis() {
       const elapsed = ((Date.now() - startTime) / 1000).toFixed(2);
       logger.success(`Audio analysis completed in ${elapsed}s`);
 
+      // Save spectrum to memory cache
+      if (analysisResult.spectrum) {
+        setSpectrumCache(filePath, analysisResult.spectrum);
+      }
+
+      // Save detail (without spectrum) to sessionStorage
+      const { spectrum, ...detailResult } = analysisResult;
+      try {
+        sessionStorage.setItem(STORAGE_KEY, JSON.stringify({
+          filePath,
+          result: detailResult,
+        }));
+      } catch (err) {
+        console.error("Failed to save analysis state:", err);
+      }
+
       setResult(analysisResult);
+      setSpectrumLoading(false); // Spectrum is now available
 
       return analysisResult;
     } catch (err) {
@@ -48,12 +116,56 @@ export function useAudioAnalysis() {
   const clearResult = useCallback(() => {
     setResult(null);
     setError(null);
+    setSelectedFilePath("");
+    try {
+      sessionStorage.removeItem(STORAGE_KEY);
+    } catch (err) {
+      // Ignore
+    }
+    clearSpectrumCache();
   }, []);
 
+  // Load spectrum from cache asynchronously after detail is displayed
+  useEffect(() => {
+    // Only load spectrum if we have result without spectrum and are in loading state
+    if (!result || !selectedFilePath || result.spectrum || !spectrumLoading) {
+      return;
+    }
+
+    // Load spectrum asynchronously to avoid blocking UI
+    // Use requestAnimationFrame to ensure detail renders first
+    let rafId: number;
+    const loadSpectrum = () => {
+      rafId = requestAnimationFrame(() => {
+        const cachedSpectrum = getSpectrumCache(selectedFilePath);
+        if (cachedSpectrum) {
+          setResult(prev => prev ? { ...prev, spectrum: cachedSpectrum } : null);
+          setSpectrumLoading(false);
+        } else {
+          // Spectrum not in cache - user needs to re-analyze
+          setSpectrumLoading(false);
+        }
+      });
+    };
+    
+    // Double RAF to ensure detail is fully rendered
+    requestAnimationFrame(() => {
+      requestAnimationFrame(loadSpectrum);
+    });
+    
+    return () => {
+      if (rafId) {
+        cancelAnimationFrame(rafId);
+      }
+    };
+  }, [result, selectedFilePath, spectrumLoading]);
+
   return {
     analyzing,
     result,
     error,
+    selectedFilePath,
+    spectrumLoading,
     analyzeFile,
     clearResult,
   };

frontend/src/hooks/useCover.ts

@@ -1,6 +1,6 @@
 import { useState, useRef } from "react";
 import { downloadCover } from "@/lib/api";
-import { getSettings } from "@/lib/settings";
+import { getSettings, parseTemplate, type TemplateData } from "@/lib/settings";
 import { toastWithSound as toast } from "@/lib/toast-with-sound";
 import { joinPath, sanitizePath } from "@/lib/utils";
 import { logger } from "@/lib/logger";
@@ -22,7 +22,6 @@ export function useCover() {
     artistName: string,
     albumName?: string,
     playlistName?: string,
-    isArtistDiscography?: boolean,
     position?: number,
     trackId?: string
   ) => {
@@ -41,20 +40,30 @@ export function useCover() {
       const os = settings.operatingSystem;
       let outputDir = settings.downloadPath;
 
-      // Build output path similar to audio download
-      if (playlistName) {
-        outputDir = joinPath(os, outputDir, sanitizePath(playlistName, os));
+      // Replace forward slashes in template data values to prevent them from being interpreted as path separators
+      const placeholder = "__SLASH_PLACEHOLDER__";
+      const templateData: TemplateData = {
+        artist: artistName?.replace(/\//g, placeholder),
+        album: albumName?.replace(/\//g, placeholder),
+        title: trackName?.replace(/\//g, placeholder),
+        track: position,
+        playlist: playlistName?.replace(/\//g, placeholder),
+      };
 
-        if (isArtistDiscography) {
-          if (settings.albumSubfolder && albumName) {
-            outputDir = joinPath(os, outputDir, sanitizePath(albumName, os));
+      // For playlist/discography, prepend the folder name
+      if (playlistName) {
+        outputDir = joinPath(os, outputDir, sanitizePath(playlistName.replace(/\//g, " "), os));
       }
-        } else {
-          if (settings.artistSubfolder && artistName) {
-            outputDir = joinPath(os, outputDir, sanitizePath(artistName, os));
-          }
-          if (settings.albumSubfolder && albumName) {
-            outputDir = joinPath(os, outputDir, sanitizePath(albumName, os));
+
+      // Apply folder template
+      if (settings.folderTemplate) {
+        const folderPath = parseTemplate(settings.folderTemplate, templateData);
+        if (folderPath) {
+          const parts = folderPath.split("/").filter((p: string) => p.trim());
+          for (const part of parts) {
+            // Restore any slashes that were in the original values as spaces
+            const sanitizedPart = part.replace(new RegExp(placeholder, "g"), " ");
+            outputDir = joinPath(os, outputDir, sanitizePath(sanitizedPart, os));
           }
         }
       }
@@ -64,7 +73,7 @@ export function useCover() {
         track_name: trackName,
         artist_name: artistName,
         output_dir: outputDir,
-        filename_format: settings.filenameFormat,
+        filename_format: settings.filenameTemplate || "{title}",
         track_number: settings.trackNumber,
         position: position || 0,
       });
@@ -97,8 +106,7 @@ export function useCover() {
 
   const handleDownloadAllCovers = async (
     tracks: TrackMetadata[],
-    playlistName?: string,
-    isArtistDiscography?: boolean
+    playlistName?: string
   ) => {
     if (tracks.length === 0) {
       toast.error("No tracks to download covers");
@@ -135,19 +143,31 @@ export function useCover() {
         const os = settings.operatingSystem;
         let outputDir = settings.downloadPath;
 
-        if (playlistName) {
-          outputDir = joinPath(os, outputDir, sanitizePath(playlistName, os));
+        // Replace forward slashes in template data values to prevent them from being interpreted as path separators
+        const placeholder = "__SLASH_PLACEHOLDER__";
+        // Build output path using template system
+        const templateData: TemplateData = {
+          artist: track.artists?.replace(/\//g, placeholder),
+          album: track.album_name?.replace(/\//g, placeholder),
+          title: track.name?.replace(/\//g, placeholder),
+          track: i + 1,
+          playlist: playlistName?.replace(/\//g, placeholder),
+        };
 
-          if (isArtistDiscography) {
-            if (settings.albumSubfolder && track.album_name) {
-              outputDir = joinPath(os, outputDir, sanitizePath(track.album_name, os));
+        // For playlist/discography, prepend the folder name
+        if (playlistName) {
+          outputDir = joinPath(os, outputDir, sanitizePath(playlistName.replace(/\//g, " "), os));
         }
-          } else {
-            if (settings.artistSubfolder && track.artists) {
-              outputDir = joinPath(os, outputDir, sanitizePath(track.artists, os));
-            }
-            if (settings.albumSubfolder && track.album_name) {
-              outputDir = joinPath(os, outputDir, sanitizePath(track.album_name, os));
+
+        // Apply folder template
+        if (settings.folderTemplate) {
+          const folderPath = parseTemplate(settings.folderTemplate, templateData);
+          if (folderPath) {
+            const parts = folderPath.split("/").filter((p: string) => p.trim());
+            for (const part of parts) {
+              // Restore any slashes that were in the original values as spaces
+              const sanitizedPart = part.replace(new RegExp(placeholder, "g"), " ");
+              outputDir = joinPath(os, outputDir, sanitizePath(sanitizedPart, os));
             }
           }
         }
@@ -157,7 +177,7 @@ export function useCover() {
           track_name: track.name,
           artist_name: track.artists,
           output_dir: outputDir,
-          filename_format: settings.filenameFormat,
+          filename_format: settings.filenameTemplate || "{title}",
           track_number: settings.trackNumber,
           position: i + 1,
         });

frontend/src/hooks/useDownload.ts

@@ -1,6 +1,6 @@
 import { useState, useRef } from "react";
 import { downloadTrack } from "@/lib/api";
-import { getSettings } from "@/lib/settings";
+import { getSettings, parseTemplate, type TemplateData } from "@/lib/settings";
 import { toastWithSound as toast } from "@/lib/toast-with-sound";
 import { joinPath, sanitizePath } from "@/lib/utils";
 import { logger } from "@/lib/logger";
@@ -22,17 +22,24 @@ export function useDownload() {
 
   const downloadWithAutoFallback = async (
     isrc: string,
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
     settings: any,
     trackName?: string,
     artistName?: string,
     albumName?: string,
     playlistName?: string,
-    isArtistDiscography?: boolean,
     position?: number,
     spotifyId?: string,
-    durationMs?: number
+    durationMs?: number,
+    releaseYear?: string,
+    albumArtist?: string,
+    releaseDate?: string,
+    coverUrl?: string,
+    spotifyTrackNumber?: number,
+    spotifyDiscNumber?: number,
+    spotifyTotalTracks?: number
   ) => {
-    let service = settings.downloader;
+    const service = settings.downloader;
 
     const query = trackName && artistName ? `${trackName} ${artistName}` : undefined;
     const os = settings.operatingSystem;
@@ -40,24 +47,40 @@ export function useDownload() {
     let outputDir = settings.downloadPath;
     let useAlbumTrackNumber = false;
 
+    // Replace forward slashes in template data values to prevent them from being interpreted as path separators
+    const placeholder = "__SLASH_PLACEHOLDER__";
+    // Build template data for folder path
+    const templateData: TemplateData = {
+      artist: artistName?.replace(/\//g, placeholder),
+      album: albumName?.replace(/\//g, placeholder),
+      title: trackName?.replace(/\//g, placeholder),
+      track: position,
+      year: releaseYear,
+      playlist: playlistName?.replace(/\//g, placeholder),
+      isrc: isrc,
+    };
+
+    // For playlist/discography downloads, always create a folder with the playlist/artist name
     if (playlistName) {
-      outputDir = joinPath(os, outputDir, sanitizePath(playlistName, os));
-
-      if (isArtistDiscography) {
-        if (settings.albumSubfolder && albumName) {
-          outputDir = joinPath(os, outputDir, sanitizePath(albumName, os));
-          useAlbumTrackNumber = true; // Use album track number for discography with album subfolder
-        }
-      } else {
-        if (settings.artistSubfolder && artistName) {
-          outputDir = joinPath(os, outputDir, sanitizePath(artistName, os));
+      outputDir = joinPath(os, outputDir, sanitizePath(playlistName.replace(/\//g, " "), os));
     }
 
-        if (settings.albumSubfolder && albumName) {
-          outputDir = joinPath(os, outputDir, sanitizePath(albumName, os));
-          useAlbumTrackNumber = true; // Use album track number when both artist and album subfolders are used
+    // Apply folder template if available
+    if (settings.folderTemplate) {
+      const folderPath = parseTemplate(settings.folderTemplate, templateData);
+      if (folderPath) {
+        const parts = folderPath.split("/").filter((p: string) => p.trim());
+        for (const part of parts) {
+          // Restore any slashes that were in the original values as spaces
+          const sanitizedPart = part.replace(new RegExp(placeholder, "g"), " ");
+          outputDir = joinPath(os, outputDir, sanitizePath(sanitizedPart, os));
         }
       }
+
+      // Use album track number if template contains {album}
+      if (settings.folderTemplate.includes("{album}")) {
+        useAlbumTrackNumber = true;
+      }
     }
 
     // Always add item to queue before downloading
@@ -66,6 +89,7 @@ export function useDownload() {
 
     if (service === "auto") {
       // Get all streaming URLs once from song.link API
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
       let streamingURLs: any = null;
       if (spotifyId) {
         try {
@@ -91,59 +115,37 @@ export function useDownload() {
             track_name: trackName,
             artist_name: artistName,
             album_name: albumName,
+            album_artist: albumArtist,
+            release_date: releaseDate,
+            cover_url: coverUrl,
             output_dir: outputDir,
-            filename_format: settings.filenameFormat,
+            filename_format: settings.filenameTemplate,
             track_number: settings.trackNumber,
             position,
             use_album_track_number: useAlbumTrackNumber,
             spotify_id: spotifyId,
+            embed_lyrics: settings.embedLyrics,
+            embed_max_quality_cover: settings.embedMaxQualityCover,
             service_url: streamingURLs.tidal_url,
             duration: durationSeconds,
             item_id: itemID, // Pass the same itemID through all attempts
+            audio_format: settings.tidalQuality || "LOSSLESS", // Use default LOSSLESS for auto mode
+            spotify_track_number: spotifyTrackNumber,
+            spotify_disc_number: spotifyDiscNumber,
+            spotify_total_tracks: spotifyTotalTracks,
           });
 
           if (tidalResponse.success) {
             logger.success(`tidal: ${trackName} - ${artistName}`);
             return tidalResponse;
           }
-          logger.warning(`tidal failed, trying deezer...`);
+          logger.warning(`tidal failed, trying amazon...`);
         } catch (tidalErr) {
           logger.error(`tidal error: ${tidalErr}`);
         }
       }
 
-      // Try Deezer second
-      if (streamingURLs?.deezer_url) {
-        try {
-          logger.debug(`trying deezer for: ${trackName} - ${artistName}`);
-          const deezerResponse = await downloadTrack({
-            isrc,
-            service: "deezer",
-            query,
-            track_name: trackName,
-            artist_name: artistName,
-            album_name: albumName,
-            output_dir: outputDir,
-            filename_format: settings.filenameFormat,
-            track_number: settings.trackNumber,
-            position,
-            use_album_track_number: useAlbumTrackNumber,
-            spotify_id: spotifyId,
-            service_url: streamingURLs.deezer_url,
-            item_id: itemID,
-          });
-
-          if (deezerResponse.success) {
-            logger.success(`deezer: ${trackName} - ${artistName}`);
-            return deezerResponse;
-          }
-          logger.warning(`deezer failed, trying amazon...`);
-        } catch (deezerErr) {
-          logger.error(`deezer error: ${deezerErr}`);
-        }
-      }
-
-      // Try Amazon third
+      // Try Amazon second
       if (streamingURLs?.amazon_url) {
         try {
           logger.debug(`trying amazon for: ${trackName} - ${artistName}`);
@@ -154,14 +156,22 @@ export function useDownload() {
             track_name: trackName,
             artist_name: artistName,
             album_name: albumName,
+            album_artist: albumArtist,
+            release_date: releaseDate,
+            cover_url: coverUrl,
             output_dir: outputDir,
-            filename_format: settings.filenameFormat,
+            filename_format: settings.filenameTemplate,
             track_number: settings.trackNumber,
             position,
             use_album_track_number: useAlbumTrackNumber,
             spotify_id: spotifyId,
+            embed_lyrics: settings.embedLyrics,
+            embed_max_quality_cover: settings.embedMaxQualityCover,
             service_url: streamingURLs.amazon_url,
             item_id: itemID,
+            spotify_track_number: spotifyTrackNumber,
+            spotify_disc_number: spotifyDiscNumber,
+            spotify_total_tracks: spotifyTotalTracks,
           });
 
           if (amazonResponse.success) {
@@ -183,14 +193,23 @@ export function useDownload() {
         track_name: trackName,
         artist_name: artistName,
         album_name: albumName,
+        album_artist: albumArtist,
+        release_date: releaseDate,
+        cover_url: coverUrl,
         output_dir: outputDir,
-        filename_format: settings.filenameFormat,
+        filename_format: settings.filenameTemplate,
         track_number: settings.trackNumber,
         position,
         use_album_track_number: useAlbumTrackNumber,
         spotify_id: spotifyId,
+        embed_lyrics: settings.embedLyrics,
+        embed_max_quality_cover: settings.embedMaxQualityCover,
         duration: durationMs ? Math.round(durationMs / 1000) : undefined,
         item_id: itemID,
+        audio_format: settings.qobuzQuality || "6", // Use default 6 (16-bit) for auto mode
+        spotify_track_number: spotifyTrackNumber,
+        spotify_disc_number: spotifyDiscNumber,
+        spotify_total_tracks: spotifyTotalTracks,
       });
 
       // If Qobuz also failed, mark the item as failed
@@ -206,21 +225,38 @@ export function useDownload() {
     // Convert duration from ms to seconds for backend
     const durationSecondsForFallback = durationMs ? Math.round(durationMs / 1000) : undefined;
 
+    // Determine audio format based on service
+    let audioFormat: string | undefined;
+    if (service === "tidal") {
+      audioFormat = settings.tidalQuality || "LOSSLESS";
+    } else if (service === "qobuz") {
+      audioFormat = settings.qobuzQuality || "6";
+    }
+
     const singleServiceResponse = await downloadTrack({
       isrc,
-      service: service as "deezer" | "tidal" | "qobuz" | "amazon",
+      service: service as "tidal" | "qobuz" | "amazon",
       query,
       track_name: trackName,
       artist_name: artistName,
       album_name: albumName,
+      album_artist: albumArtist,
+      release_date: releaseDate,
+      cover_url: coverUrl,
       output_dir: outputDir,
-      filename_format: settings.filenameFormat,
+      filename_format: settings.filenameTemplate,
       track_number: settings.trackNumber,
       position,
       use_album_track_number: useAlbumTrackNumber,
       spotify_id: spotifyId,
+      embed_lyrics: settings.embedLyrics,
+      embed_max_quality_cover: settings.embedMaxQualityCover,
       duration: durationSecondsForFallback,
       item_id: itemID, // Pass itemID for tracking
+      audio_format: audioFormat,
+      spotify_track_number: spotifyTrackNumber,
+      spotify_disc_number: spotifyDiscNumber,
+      spotify_total_tracks: spotifyTotalTracks,
     });
 
     // Mark as failed if download failed for single-service attempt
@@ -234,18 +270,26 @@ export function useDownload() {
 
   const downloadWithItemID = async (
     isrc: string,
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
     settings: any,
     itemID: string,
     trackName?: string,
     artistName?: string,
     albumName?: string,
-    playlistName?: string,
-    isArtistDiscography?: boolean,
+    folderName?: string,
     position?: number,
     spotifyId?: string,
-    durationMs?: number
+    durationMs?: number,
+    isAlbum?: boolean,
+    releaseYear?: string,
+    albumArtist?: string,
+    releaseDate?: string,
+    coverUrl?: string,
+    spotifyTrackNumber?: number,
+    spotifyDiscNumber?: number,
+    spotifyTotalTracks?: number
   ) => {
-    let service = settings.downloader;
+    const service = settings.downloader;
 
     const query = trackName && artistName ? `${trackName} ${artistName}` : undefined;
     const os = settings.operatingSystem;
@@ -253,28 +297,46 @@ export function useDownload() {
     let outputDir = settings.downloadPath;
     let useAlbumTrackNumber = false;
 
-    if (playlistName) {
-      outputDir = joinPath(os, outputDir, sanitizePath(playlistName, os));
+    // Replace forward slashes in template data values to prevent them from being interpreted as path separators
+    const placeholder = "__SLASH_PLACEHOLDER__";
+    const templateData: TemplateData = {
+      artist: artistName?.replace(/\//g, placeholder),
+      album: albumName?.replace(/\//g, placeholder),
+      title: trackName?.replace(/\//g, placeholder),
+      track: position,
+      year: releaseYear,
+      playlist: folderName?.replace(/\//g, placeholder),
+      isrc: isrc,
+    };
 
-      if (isArtistDiscography) {
-        if (settings.albumSubfolder && albumName) {
-          outputDir = joinPath(os, outputDir, sanitizePath(albumName, os));
-          useAlbumTrackNumber = true;
-        }
-      } else {
-        if (settings.artistSubfolder && artistName) {
-          outputDir = joinPath(os, outputDir, sanitizePath(artistName, os));
+    // For playlist/discography downloads, always create a folder with the playlist/artist name
+    if (folderName && !isAlbum) {
+      outputDir = joinPath(os, outputDir, sanitizePath(folderName.replace(/\//g, " "), os));
     }
 
-        if (settings.albumSubfolder && albumName) {
-          outputDir = joinPath(os, outputDir, sanitizePath(albumName, os));
-          useAlbumTrackNumber = true;
+    // Apply folder template if available
+    if (settings.folderTemplate) {
+      // Parse and apply folder template
+      const folderPath = parseTemplate(settings.folderTemplate, templateData);
+      if (folderPath) {
+        // Split by / (template separators), then restore placeholders as spaces
+        const parts = folderPath.split("/").filter(p => p.trim());
+        for (const part of parts) {
+          // Restore any slashes that were in the original values as spaces
+          const sanitizedPart = part.replace(new RegExp(placeholder, "g"), " ");
+          outputDir = joinPath(os, outputDir, sanitizePath(sanitizedPart, os));
         }
       }
+      
+      // Use album track number if template contains {album}
+      if (settings.folderTemplate.includes("{album}")) {
+        useAlbumTrackNumber = true;
+      }
     }
 
     if (service === "auto") {
       // Get all streaming URLs once from song.link API
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
       let streamingURLs: any = null;
       if (spotifyId) {
         try {
@@ -298,15 +360,24 @@ export function useDownload() {
             track_name: trackName,
             artist_name: artistName,
             album_name: albumName,
+            album_artist: albumArtist,
+            release_date: releaseDate,
+            cover_url: coverUrl,
             output_dir: outputDir,
-            filename_format: settings.filenameFormat,
+            filename_format: settings.filenameTemplate,
             track_number: settings.trackNumber,
             position,
             use_album_track_number: useAlbumTrackNumber,
             spotify_id: spotifyId,
+            embed_lyrics: settings.embedLyrics,
+            embed_max_quality_cover: settings.embedMaxQualityCover,
             service_url: streamingURLs.tidal_url,
             duration: durationSeconds,
             item_id: itemID,
+            audio_format: settings.tidalQuality || "LOSSLESS", // Use default LOSSLESS for auto mode
+            spotify_track_number: spotifyTrackNumber,
+            spotify_disc_number: spotifyDiscNumber,
+            spotify_total_tracks: spotifyTotalTracks,
           });
 
           if (tidalResponse.success) {
@@ -317,35 +388,7 @@ export function useDownload() {
         }
       }
 
-      // Try Deezer second
-      if (streamingURLs?.deezer_url) {
-        try {
-          const deezerResponse = await downloadTrack({
-            isrc,
-            service: "deezer",
-            query,
-            track_name: trackName,
-            artist_name: artistName,
-            album_name: albumName,
-            output_dir: outputDir,
-            filename_format: settings.filenameFormat,
-            track_number: settings.trackNumber,
-            position,
-            use_album_track_number: useAlbumTrackNumber,
-            spotify_id: spotifyId,
-            service_url: streamingURLs.deezer_url,
-            item_id: itemID,
-          });
-
-          if (deezerResponse.success) {
-            return deezerResponse;
-          }
-        } catch (deezerErr) {
-          console.error("Deezer error:", deezerErr);
-        }
-      }
-
-      // Try Amazon third
+      // Try Amazon second
       if (streamingURLs?.amazon_url) {
         try {
           const amazonResponse = await downloadTrack({
@@ -355,14 +398,22 @@ export function useDownload() {
             track_name: trackName,
             artist_name: artistName,
             album_name: albumName,
+            album_artist: albumArtist,
+            release_date: releaseDate,
+            cover_url: coverUrl,
             output_dir: outputDir,
-            filename_format: settings.filenameFormat,
+            filename_format: settings.filenameTemplate,
             track_number: settings.trackNumber,
             position,
             use_album_track_number: useAlbumTrackNumber,
             spotify_id: spotifyId,
+            embed_lyrics: settings.embedLyrics,
+            embed_max_quality_cover: settings.embedMaxQualityCover,
             service_url: streamingURLs.amazon_url,
             item_id: itemID,
+            spotify_track_number: spotifyTrackNumber,
+            spotify_disc_number: spotifyDiscNumber,
+            spotify_total_tracks: spotifyTotalTracks,
           });
 
           if (amazonResponse.success) {
@@ -381,14 +432,23 @@ export function useDownload() {
         track_name: trackName,
         artist_name: artistName,
         album_name: albumName,
+        album_artist: albumArtist,
+        release_date: releaseDate,
+        cover_url: coverUrl,
         output_dir: outputDir,
-        filename_format: settings.filenameFormat,
+        filename_format: settings.filenameTemplate,
         track_number: settings.trackNumber,
         position,
         use_album_track_number: useAlbumTrackNumber,
         spotify_id: spotifyId,
+        embed_lyrics: settings.embedLyrics,
+        embed_max_quality_cover: settings.embedMaxQualityCover,
         duration: durationMs ? Math.round(durationMs / 1000) : undefined,
         item_id: itemID,
+        audio_format: settings.qobuzQuality || "6", // Use default 6 (16-bit) for auto mode
+        spotify_track_number: spotifyTrackNumber,
+        spotify_disc_number: spotifyDiscNumber,
+        spotify_total_tracks: spotifyTotalTracks,
       });
 
       // If Qobuz also failed, mark the item as failed
@@ -403,21 +463,38 @@ export function useDownload() {
     // Single service download
     const durationSecondsForFallback = durationMs ? Math.round(durationMs / 1000) : undefined;
 
+    // Determine audio format based on service
+    let audioFormat: string | undefined;
+    if (service === "tidal") {
+      audioFormat = settings.tidalQuality || "LOSSLESS";
+    } else if (service === "qobuz") {
+      audioFormat = settings.qobuzQuality || "6";
+    }
+
     const singleServiceResponse = await downloadTrack({
       isrc,
-      service: service as "deezer" | "tidal" | "qobuz" | "amazon",
+      service: service as "tidal" | "qobuz" | "amazon",
       query,
       track_name: trackName,
       artist_name: artistName,
       album_name: albumName,
+      album_artist: albumArtist,
+      release_date: releaseDate,
+      cover_url: coverUrl,
       output_dir: outputDir,
-      filename_format: settings.filenameFormat,
+      filename_format: settings.filenameTemplate,
       track_number: settings.trackNumber,
       position,
       use_album_track_number: useAlbumTrackNumber,
       spotify_id: spotifyId,
+      embed_lyrics: settings.embedLyrics,
+      embed_max_quality_cover: settings.embedMaxQualityCover,
       duration: durationSecondsForFallback,
       item_id: itemID,
+      audio_format: audioFormat,
+      spotify_track_number: spotifyTrackNumber,
+      spotify_disc_number: spotifyDiscNumber,
+      spotify_total_tracks: spotifyTotalTracks,
     });
 
     // Mark as failed if download failed for single-service attempt
@@ -436,8 +513,14 @@ export function useDownload() {
     albumName?: string,
     spotifyId?: string,
     playlistName?: string,
-    isArtistDiscography?: boolean,
-    durationMs?: number
+    durationMs?: number,
+    position?: number,
+    albumArtist?: string,
+    releaseDate?: string,
+    coverUrl?: string,
+    spotifyTrackNumber?: number,
+    spotifyDiscNumber?: number,
+    spotifyTotalTracks?: number
   ) => {
     if (!isrc) {
       toast.error("No ISRC found for this track");
@@ -450,6 +533,9 @@ export function useDownload() {
 
     try {
       // Single track download - use playlistName if provided for folder structure
+      // Extract year from release_date (format: YYYY-MM-DD or YYYY)
+      const releaseYear = releaseDate?.substring(0, 4);
+      
       const response = await downloadWithAutoFallback(
         isrc,
         settings,
@@ -457,10 +543,16 @@ export function useDownload() {
         artistName,
         albumName,
         playlistName,
-        isArtistDiscography,
-        undefined, // Don't pass position for single track
+        position, // Pass position for track numbering
         spotifyId,
-        durationMs
+        durationMs,
+        releaseYear,
+        albumArtist || "",
+        releaseDate,
+        coverUrl,
+        spotifyTrackNumber, // Spotify album track number
+        spotifyDiscNumber,  // Spotify disc number
+        spotifyTotalTracks  // Total tracks in album
       );
 
       if (response.success) {
@@ -491,8 +583,8 @@ export function useDownload() {
   const handleDownloadSelected = async (
     selectedTracks: string[],
     allTracks: TrackMetadata[],
-    playlistName?: string,
-    isArtistDiscography?: boolean
+    folderName?: string,
+    isAlbum?: boolean
   ) => {
     if (selectedTracks.length === 0) {
       toast.error("No tracks selected");
@@ -543,6 +635,9 @@ export function useDownload() {
       }
 
       try {
+        // Extract year from release_date (format: YYYY-MM-DD or YYYY)
+        const releaseYear = track?.release_date?.substring(0, 4);
+        
         // Download with pre-created itemID
         const response = await downloadWithItemID(
           isrc,
@@ -551,11 +646,18 @@ export function useDownload() {
           track?.name,
           track?.artists,
           track?.album_name,
-          playlistName,
-          isArtistDiscography,
+          folderName,
           i + 1, // Sequential position based on selection order
           track?.spotify_id,
-          track?.duration_ms
+          track?.duration_ms,
+          isAlbum,
+          releaseYear,
+          track?.album_artist || "", // Use album_artist from Spotify metadata
+          track?.release_date,
+          track?.images, // Spotify cover URL
+          track?.track_number, // Spotify album track number
+          track?.disc_number,  // Spotify disc number
+          track?.total_tracks  // Total tracks in album
         );
 
         if (response.success) {
@@ -622,8 +724,8 @@ export function useDownload() {
 
   const handleDownloadAll = async (
     tracks: TrackMetadata[],
-    playlistName?: string,
-    isArtistDiscography?: boolean
+    folderName?: string,
+    isAlbum?: boolean
   ) => {
     const tracksWithIsrc = tracks.filter((track) => track.isrc);
 
@@ -671,6 +773,9 @@ export function useDownload() {
       setCurrentDownloadInfo({ name: track.name, artists: track.artists });
 
       try {
+        // Extract year from release_date (format: YYYY-MM-DD or YYYY)
+        const releaseYear = track.release_date?.substring(0, 4);
+        
         const response = await downloadWithItemID(
           track.isrc,
           settings,
@@ -678,11 +783,18 @@ export function useDownload() {
           track.name,
           track.artists,
           track.album_name,
-          playlistName,
-          isArtistDiscography,
+          folderName,
           i + 1,
           track.spotify_id,
-          track.duration_ms
+          track.duration_ms,
+          isAlbum,
+          releaseYear,
+          track.album_artist || "", // Use album_artist from Spotify metadata
+          track.release_date,
+          track.images, // Spotify cover URL
+          track.track_number, // Spotify album track number
+          track.disc_number,  // Spotify disc number
+          track.total_tracks  // Total tracks in album
         );
 
         if (response.success) {

frontend/src/hooks/useLyrics.ts

@@ -1,15 +1,19 @@
-import { useState } from "react";
+import { useState, useRef } from "react";
 import { downloadLyrics } from "@/lib/api";
-import { getSettings } from "@/lib/settings";
+import { getSettings, parseTemplate, type TemplateData } from "@/lib/settings";
 import { toastWithSound as toast } from "@/lib/toast-with-sound";
 import { joinPath, sanitizePath } from "@/lib/utils";
 import { logger } from "@/lib/logger";
+import type { TrackMetadata } from "@/types/api";
 
 export function useLyrics() {
   const [downloadingLyricsTrack, setDownloadingLyricsTrack] = useState<string | null>(null);
   const [downloadedLyrics, setDownloadedLyrics] = useState<Set<string>>(new Set());
   const [failedLyrics, setFailedLyrics] = useState<Set<string>>(new Set());
   const [skippedLyrics, setSkippedLyrics] = useState<Set<string>>(new Set());
+  const [isBulkDownloadingLyrics, setIsBulkDownloadingLyrics] = useState(false);
+  const [lyricsDownloadProgress, setLyricsDownloadProgress] = useState(0);
+  const stopBulkDownloadRef = useRef(false);
 
   const handleDownloadLyrics = async (
     spotifyId: string,
@@ -17,7 +21,6 @@ export function useLyrics() {
     artistName: string,
     albumName?: string,
     playlistName?: string,
-    isArtistDiscography?: boolean,
     position?: number
   ) => {
     if (!spotifyId) {
@@ -33,33 +36,46 @@ export function useLyrics() {
       const os = settings.operatingSystem;
       let outputDir = settings.downloadPath;
 
-      // Build output path similar to audio download
-      if (playlistName) {
-        outputDir = joinPath(os, outputDir, sanitizePath(playlistName, os));
+      // Build output path using template system
+      // Replace forward slashes in template data values to prevent them from being interpreted as path separators
+      const placeholder = "__SLASH_PLACEHOLDER__";
+      const templateData: TemplateData = {
+        artist: artistName?.replace(/\//g, placeholder),
+        album: albumName?.replace(/\//g, placeholder),
+        title: trackName?.replace(/\//g, placeholder),
+        track: position,
+        playlist: playlistName?.replace(/\//g, placeholder),
+      };
 
-        if (isArtistDiscography) {
-          if (settings.albumSubfolder && albumName) {
-            outputDir = joinPath(os, outputDir, sanitizePath(albumName, os));
+      // For playlist/discography, prepend the folder name
+      if (playlistName) {
+        outputDir = joinPath(os, outputDir, sanitizePath(playlistName.replace(/\//g, " "), os));
       }
-        } else {
-          if (settings.artistSubfolder && artistName) {
-            outputDir = joinPath(os, outputDir, sanitizePath(artistName, os));
-          }
-          if (settings.albumSubfolder && albumName) {
-            outputDir = joinPath(os, outputDir, sanitizePath(albumName, os));
+
+      // Apply folder template
+      if (settings.folderTemplate) {
+        const folderPath = parseTemplate(settings.folderTemplate, templateData);
+        if (folderPath) {
+          const parts = folderPath.split("/").filter((p: string) => p.trim());
+          for (const part of parts) {
+            // Restore any slashes that were in the original values as spaces
+            const sanitizedPart = part.replace(new RegExp(placeholder, "g"), " ");
+            outputDir = joinPath(os, outputDir, sanitizePath(sanitizedPart, os));
           }
         }
       }
 
+      const useAlbumTrackNumber = settings.folderTemplate?.includes("{album}") || false;
+
       const response = await downloadLyrics({
         spotify_id: spotifyId,
         track_name: trackName,
         artist_name: artistName,
         output_dir: outputDir,
-        filename_format: settings.filenameFormat,
+        filename_format: settings.filenameTemplate || "{title}",
         track_number: settings.trackNumber,
         position: position || 0,
-        use_album_track_number: settings.albumSubfolder,
+        use_album_track_number: useAlbumTrackNumber,
       });
 
       if (response.success) {
@@ -87,6 +103,126 @@ export function useLyrics() {
     }
   };
 
+  const handleDownloadAllLyrics = async (
+    tracks: TrackMetadata[],
+    playlistName?: string,
+    _isArtistDiscography?: boolean
+  ) => {
+    const tracksWithSpotifyId = tracks.filter((track) => track.spotify_id);
+
+    if (tracksWithSpotifyId.length === 0) {
+      toast.error("No tracks with Spotify ID available for lyrics download");
+      return;
+    }
+
+    const settings = getSettings();
+    setIsBulkDownloadingLyrics(true);
+    setLyricsDownloadProgress(0);
+    stopBulkDownloadRef.current = false;
+
+    let completed = 0;
+    let success = 0;
+    let failed = 0;
+    let skipped = 0;
+    const total = tracksWithSpotifyId.length;
+
+    for (const track of tracksWithSpotifyId) {
+      if (stopBulkDownloadRef.current) {
+        toast.info("Lyrics download stopped by user");
+        break;
+      }
+
+      const id = track.spotify_id!;
+      setDownloadingLyricsTrack(id);
+      setLyricsDownloadProgress(Math.round((completed / total) * 100));
+
+      try {
+        const os = settings.operatingSystem;
+        let outputDir = settings.downloadPath;
+
+        // Replace forward slashes in template data values to prevent them from being interpreted as path separators
+        const placeholder = "__SLASH_PLACEHOLDER__";
+        // Build output path using template system
+        const templateData: TemplateData = {
+          artist: track.artists?.replace(/\//g, placeholder),
+          album: track.album_name?.replace(/\//g, placeholder),
+          title: track.name?.replace(/\//g, placeholder),
+          track: track.track_number,
+          playlist: playlistName?.replace(/\//g, placeholder),
+        };
+
+        // For playlist/discography, prepend the folder name
+        if (playlistName) {
+          outputDir = joinPath(os, outputDir, sanitizePath(playlistName.replace(/\//g, " "), os));
+        }
+
+        // Apply folder template
+        if (settings.folderTemplate) {
+          const folderPath = parseTemplate(settings.folderTemplate, templateData);
+          if (folderPath) {
+            const parts = folderPath.split("/").filter((p: string) => p.trim());
+            for (const part of parts) {
+              // Restore any slashes that were in the original values as spaces
+              const sanitizedPart = part.replace(new RegExp(placeholder, "g"), " ");
+              outputDir = joinPath(os, outputDir, sanitizePath(sanitizedPart, os));
+            }
+          }
+        }
+
+        const useAlbumTrackNumber = settings.folderTemplate?.includes("{album}") || false;
+
+        const response = await downloadLyrics({
+          spotify_id: id,
+          track_name: track.name,
+          artist_name: track.artists,
+          output_dir: outputDir,
+          filename_format: settings.filenameTemplate || "{title}",
+          track_number: settings.trackNumber,
+          position: track.track_number || 0,
+          use_album_track_number: useAlbumTrackNumber,
+        });
+
+        if (response.success) {
+          if (response.already_exists) {
+            skipped++;
+            setSkippedLyrics((prev) => new Set(prev).add(id));
+          } else {
+            success++;
+            setDownloadedLyrics((prev) => new Set(prev).add(id));
+          }
+          setFailedLyrics((prev) => {
+            const newSet = new Set(prev);
+            newSet.delete(id);
+            return newSet;
+          });
+        } else {
+          failed++;
+          setFailedLyrics((prev) => new Set(prev).add(id));
+        }
+      } catch (err) {
+        failed++;
+        logger.error(`error downloading lyrics: ${track.name} - ${err}`);
+        setFailedLyrics((prev) => new Set(prev).add(id));
+      }
+
+      completed++;
+    }
+
+    setDownloadingLyricsTrack(null);
+    setIsBulkDownloadingLyrics(false);
+    setLyricsDownloadProgress(0);
+
+    if (!stopBulkDownloadRef.current) {
+      toast.success(`Lyrics: ${success} downloaded, ${skipped} skipped, ${failed} failed`);
+    }
+  };
+
+  const handleStopLyricsDownload = () => {
+    logger.info("lyrics download stopped by user");
+    stopBulkDownloadRef.current = true;
+    toast.info("Stopping lyrics download...");
+  };
+
   const resetLyricsState = () => {
     setDownloadedLyrics(new Set());
     setFailedLyrics(new Set());
@@ -98,7 +234,11 @@ export function useLyrics() {
     downloadedLyrics,
     failedLyrics,
     skippedLyrics,
+    isBulkDownloadingLyrics,
+    lyricsDownloadProgress,
     handleDownloadLyrics,
+    handleDownloadAllLyrics,
+    handleStopLyricsDownload,
     resetLyricsState,
   };
 }

frontend/src/index.css

@@ -26,19 +26,6 @@
   --color-border: var(--border);
   --color-input: var(--input);
   --color-ring: var(--ring);
-  --color-chart-1: var(--chart-1);
-  --color-chart-2: var(--chart-2);
-  --color-chart-3: var(--chart-3);
-  --color-chart-4: var(--chart-4);
-  --color-chart-5: var(--chart-5);
-  --color-sidebar: var(--sidebar);
-  --color-sidebar-foreground: var(--sidebar-foreground);
-  --color-sidebar-primary: var(--sidebar-primary);
-  --color-sidebar-primary-foreground: var(--sidebar-primary-foreground);
-  --color-sidebar-accent: var(--sidebar-accent);
-  --color-sidebar-accent-foreground: var(--sidebar-accent-foreground);
-  --color-sidebar-border: var(--sidebar-border);
-  --color-sidebar-ring: var(--sidebar-ring);
 }
 
 :root {
@@ -61,19 +48,6 @@
   --border: oklch(0.922 0 0);
   --input: oklch(0.922 0 0);
   --ring: oklch(0.708 0 0);
-  --chart-1: oklch(0.646 0.222 41.116);
-  --chart-2: oklch(0.6 0.118 184.704);
-  --chart-3: oklch(0.398 0.07 227.392);
-  --chart-4: oklch(0.828 0.189 84.429);
-  --chart-5: oklch(0.769 0.188 70.08);
-  --sidebar: oklch(0.985 0 0);
-  --sidebar-foreground: oklch(0.145 0 0);
-  --sidebar-primary: oklch(0.205 0 0);
-  --sidebar-primary-foreground: oklch(0.985 0 0);
-  --sidebar-accent: oklch(0.97 0 0);
-  --sidebar-accent-foreground: oklch(0.205 0 0);
-  --sidebar-border: oklch(0.922 0 0);
-  --sidebar-ring: oklch(0.708 0 0);
 }
 
 .dark {
@@ -95,19 +69,6 @@
   --border: oklch(1 0 0 / 10%);
   --input: oklch(1 0 0 / 15%);
   --ring: oklch(0.556 0 0);
-  --chart-1: oklch(0.488 0.243 264.376);
-  --chart-2: oklch(0.696 0.17 162.48);
-  --chart-3: oklch(0.769 0.188 70.08);
-  --chart-4: oklch(0.627 0.265 303.9);
-  --chart-5: oklch(0.645 0.246 16.439);
-  --sidebar: oklch(0.205 0 0);
-  --sidebar-foreground: oklch(0.985 0 0);
-  --sidebar-primary: oklch(0.488 0.243 264.376);
-  --sidebar-primary-foreground: oklch(0.985 0 0);
-  --sidebar-accent: oklch(0.269 0 0);
-  --sidebar-accent-foreground: oklch(0.985 0 0);
-  --sidebar-border: oklch(1 0 0 / 10%);
-  --sidebar-ring: oklch(0.556 0 0);
 }
 
 @layer base {
@@ -164,6 +125,54 @@
   @apply text-blue-600;
 }
 
+/* Ensure description text uses same color as title */
+[data-sonner-toast] [data-description],
+[data-sonner-toast] [data-description] * {
+  opacity: 1 !important;
+}
+
+/* Specific color for each toast type - match icon color */
+[data-sonner-toast][data-type="success"] [data-description],
+[data-sonner-toast][data-type="success"] [data-description] * {
+  color: rgb(22 163 74) !important; /* green-600 - same as icon */
+}
+
+[data-sonner-toast][data-type="error"] [data-description],
+[data-sonner-toast][data-type="error"] [data-description] * {
+  color: rgb(220 38 38) !important; /* red-600 - same as icon */
+}
+
+[data-sonner-toast][data-type="warning"] [data-description],
+[data-sonner-toast][data-type="warning"] [data-description] * {
+  color: rgb(202 138 4) !important; /* yellow-600 - same as icon */
+}
+
+[data-sonner-toast][data-type="info"] [data-description],
+[data-sonner-toast][data-type="info"] [data-description] * {
+  color: rgb(37 99 235) !important; /* blue-600 - same as icon */
+}
+
+/* Dark mode - use same icon colors */
+.dark [data-sonner-toast][data-type="success"] [data-description],
+.dark [data-sonner-toast][data-type="success"] [data-description] * {
+  color: rgb(22 163 74) !important; /* green-600 */
+}
+
+.dark [data-sonner-toast][data-type="error"] [data-description],
+.dark [data-sonner-toast][data-type="error"] [data-description] * {
+  color: rgb(220 38 38) !important; /* red-600 */
+}
+
+.dark [data-sonner-toast][data-type="warning"] [data-description],
+.dark [data-sonner-toast][data-type="warning"] [data-description] * {
+  color: rgb(202 138 4) !important; /* yellow-600 */
+}
+
+.dark [data-sonner-toast][data-type="info"] [data-description],
+.dark [data-sonner-toast][data-type="info"] [data-description] * {
+  color: rgb(37 99 235) !important; /* blue-600 */
+}
+
 /* Dark mode toast styling */
 .dark [data-sonner-toast][data-type="success"] {
   @apply bg-green-950 border-green-800 text-green-100;

frontend/src/lib/settings.ts

@@ -1,21 +1,70 @@
 import { GetDefaults } from "../../wailsjs/go/main/App";
 
-export type FontFamily = "google-sans" | "inter" | "poppins" | "roboto" | "dm-sans" | "plus-jakarta-sans" | "manrope" | "space-grotesk";
+export type FontFamily = "google-sans" | "inter" | "poppins" | "roboto" | "dm-sans" | "plus-jakarta-sans" | "manrope" | "space-grotesk" | "noto-sans" | "nunito-sans" | "figtree" | "raleway" | "public-sans" | "outfit" | "jetbrains-mono" | "geist-sans";
+
+// Folder structure presets
+export type FolderPreset = "none" | "artist" | "album" | "artist-album" | "artist-year-album" | "custom";
+
+// Filename format presets
+export type FilenamePreset = "title" | "title-artist" | "artist-title" | "track-title" | "track-title-artist" | "track-artist-title" | "custom";
 
 export interface Settings {
   downloadPath: string;
-  downloader: "auto" | "deezer" | "tidal" | "qobuz" | "amazon";
+  downloader: "auto" | "tidal" | "qobuz" | "amazon";
   theme: string;
   themeMode: "auto" | "light" | "dark";
   fontFamily: FontFamily;
-  filenameFormat: "title-artist" | "artist-title" | "title";
-  artistSubfolder: boolean;
-  albumSubfolder: boolean;
+  // New template system
+  folderPreset: FolderPreset;
+  folderTemplate: string;
+  filenamePreset: FilenamePreset;
+  filenameTemplate: string;
+  // Legacy settings (kept for migration)
+  filenameFormat?: "title-artist" | "artist-title" | "title";
+  artistSubfolder?: boolean;
+  albumSubfolder?: boolean;
   trackNumber: boolean;
   sfxEnabled: boolean;
-  operatingSystem: "Windows" | "linux/MacOS"
+  embedLyrics: boolean;
+  embedMaxQualityCover: boolean;
+  operatingSystem: "Windows" | "linux/MacOS";
+  // Quality settings for specific sources
+  tidalQuality: "LOSSLESS" | "HI_RES_LOSSLESS";
+  qobuzQuality: "6" | "7" | "27";
 }
 
+// Folder preset templates
+export const FOLDER_PRESETS: Record<FolderPreset, { label: string; template: string }> = {
+  "none": { label: "No Subfolder", template: "" },
+  "artist": { label: "Artist", template: "{artist}" },
+  "album": { label: "Album", template: "{album}" },
+  "artist-album": { label: "Artist / Album", template: "{artist}/{album}" },
+  "artist-year-album": { label: "Artist / [Year] Album", template: "{artist}/[{year}] {album}" },
+  "custom": { label: "Custom...", template: "" },
+};
+
+// Filename preset templates
+export const FILENAME_PRESETS: Record<FilenamePreset, { label: string; template: string }> = {
+  "title": { label: "Title", template: "{title}" },
+  "title-artist": { label: "Title - Artist", template: "{title} - {artist}" },
+  "artist-title": { label: "Artist - Title", template: "{artist} - {title}" },
+  "track-title": { label: "Track. Title", template: "{track}. {title}" },
+  "track-title-artist": { label: "Track. Title - Artist", template: "{track}. {title} - {artist}" },
+  "track-artist-title": { label: "Track. Artist - Title", template: "{track}. {artist} - {title}" },
+  "custom": { label: "Custom...", template: "" },
+};
+
+// Available template variables
+export const TEMPLATE_VARIABLES = [
+  { key: "{artist}", description: "Artist name", example: "Taylor Swift" },
+  { key: "{album}", description: "Album name", example: "1989" },
+  { key: "{title}", description: "Track title", example: "Shake It Off" },
+  { key: "{track}", description: "Track number", example: "01" },
+  { key: "{year}", description: "Release year", example: "2014" },
+  { key: "{isrc}", description: "ISRC code", example: "USCJY1431309" },
+  { key: "{playlist}", description: "Playlist name", example: "My Playlist" },
+];
+
 // Auto-detect operating system
 function detectOS(): "Windows" | "linux/MacOS" {
   const platform = window.navigator.platform.toLowerCase();
@@ -31,22 +80,35 @@ export const DEFAULT_SETTINGS: Settings = {
   theme: "yellow",
   themeMode: "auto",
   fontFamily: "google-sans",
-  filenameFormat: "title-artist",
-  artistSubfolder: false,
-  albumSubfolder: false,
+  folderPreset: "none",
+  folderTemplate: "",
+  filenamePreset: "title-artist",
+  filenameTemplate: "{title} - {artist}",
   trackNumber: false,
   sfxEnabled: true,
-  operatingSystem: detectOS()
+  embedLyrics: false,
+  embedMaxQualityCover: false,
+  operatingSystem: detectOS(),
+  tidalQuality: "LOSSLESS", // Default: 16-bit lossless
+  qobuzQuality: "6" // Default: FLAC 16-bit
 };
 
 export const FONT_OPTIONS: { value: FontFamily; label: string; fontFamily: string }[] = [
+  { value: "dm-sans", label: "DM Sans", fontFamily: '"DM Sans", system-ui, sans-serif' },
+  { value: "figtree", label: "Figtree", fontFamily: '"Figtree", system-ui, sans-serif' },
+  { value: "geist-sans", label: "Geist Sans", fontFamily: '"Geist", system-ui, sans-serif' },
   { value: "google-sans", label: "Google Sans Flex", fontFamily: '"Google Sans Flex", system-ui, sans-serif' },
   { value: "inter", label: "Inter", fontFamily: '"Inter", system-ui, sans-serif' },
-  { value: "poppins", label: "Poppins", fontFamily: '"Poppins", system-ui, sans-serif' },
-  { value: "roboto", label: "Roboto", fontFamily: '"Roboto", system-ui, sans-serif' },
-  { value: "dm-sans", label: "DM Sans", fontFamily: '"DM Sans", system-ui, sans-serif' },
-  { value: "plus-jakarta-sans", label: "Plus Jakarta Sans", fontFamily: '"Plus Jakarta Sans", system-ui, sans-serif' },
+  { value: "jetbrains-mono", label: "JetBrains Mono", fontFamily: '"JetBrains Mono", ui-monospace, monospace' },
   { value: "manrope", label: "Manrope", fontFamily: '"Manrope", system-ui, sans-serif' },
+  { value: "noto-sans", label: "Noto Sans", fontFamily: '"Noto Sans", system-ui, sans-serif' },
+  { value: "nunito-sans", label: "Nunito Sans", fontFamily: '"Nunito Sans", system-ui, sans-serif' },
+  { value: "outfit", label: "Outfit", fontFamily: '"Outfit", system-ui, sans-serif' },
+  { value: "plus-jakarta-sans", label: "Plus Jakarta Sans", fontFamily: '"Plus Jakarta Sans", system-ui, sans-serif' },
+  { value: "poppins", label: "Poppins", fontFamily: '"Poppins", system-ui, sans-serif' },
+  { value: "public-sans", label: "Public Sans", fontFamily: '"Public Sans", system-ui, sans-serif' },
+  { value: "raleway", label: "Raleway", fontFamily: '"Raleway", system-ui, sans-serif' },
+  { value: "roboto", label: "Roboto", fontFamily: '"Roboto", system-ui, sans-serif' },
   { value: "space-grotesk", label: "Space Grotesk", fontFamily: '"Space Grotesk", system-ui, sans-serif' },
 ];
 
@@ -80,8 +142,46 @@ export function getSettings(): Settings {
         parsed.themeMode = parsed.darkMode ? 'dark' : 'light';
         delete parsed.darkMode;
       }
+      // Migrate old folder/filename settings to new template system
+      if (!('folderPreset' in parsed) && ('artistSubfolder' in parsed || 'albumSubfolder' in parsed)) {
+        const hasArtist = parsed.artistSubfolder;
+        const hasAlbum = parsed.albumSubfolder;
+        if (hasArtist && hasAlbum) {
+          parsed.folderPreset = "artist-album";
+          parsed.folderTemplate = "{artist}/{album}";
+        } else if (hasArtist) {
+          parsed.folderPreset = "artist";
+          parsed.folderTemplate = "{artist}";
+        } else if (hasAlbum) {
+          parsed.folderPreset = "album";
+          parsed.folderTemplate = "{album}";
+        } else {
+          parsed.folderPreset = "none";
+          parsed.folderTemplate = "";
+        }
+      }
+      if (!('filenamePreset' in parsed) && 'filenameFormat' in parsed) {
+        const format = parsed.filenameFormat;
+        if (format === "title-artist") {
+          parsed.filenamePreset = "artist-title";
+          parsed.filenameTemplate = "{artist} - {title}";
+        } else if (format === "artist-title") {
+          parsed.filenamePreset = "artist-title";
+          parsed.filenameTemplate = "{artist} - {title}";
+        } else {
+          parsed.filenamePreset = "title";
+          parsed.filenameTemplate = "{title}";
+        }
+      }
       // Always use detected OS (don't persist it)
       parsed.operatingSystem = detectOS();
+      // Set default quality if not present
+      if (!('tidalQuality' in parsed)) {
+        parsed.tidalQuality = "LOSSLESS";
+      }
+      if (!('qobuzQuality' in parsed)) {
+        parsed.qobuzQuality = "6";
+      }
       return { ...DEFAULT_SETTINGS, ...parsed };
     }
   } catch (error) {
@@ -90,6 +190,34 @@ export function getSettings(): Settings {
   return DEFAULT_SETTINGS;
 }
 
+// Parse template and replace variables with actual values
+export interface TemplateData {
+  artist?: string;
+  album?: string;
+  title?: string;
+  track?: number;
+  year?: string;
+  isrc?: string;
+  playlist?: string;
+}
+
+export function parseTemplate(template: string, data: TemplateData): string {
+  if (!template) return "";
+  
+  let result = template;
+  
+  // Replace each variable
+  result = result.replace(/\{artist\}/g, data.artist || "Unknown Artist");
+  result = result.replace(/\{album\}/g, data.album || "Unknown Album");
+  result = result.replace(/\{title\}/g, data.title || "Unknown Title");
+  result = result.replace(/\{track\}/g, data.track ? String(data.track).padStart(2, "0") : "00");
+  result = result.replace(/\{year\}/g, data.year || "0000");
+  result = result.replace(/\{isrc\}/g, data.isrc || "");
+  result = result.replace(/\{playlist\}/g, data.playlist || "");
+  
+  return result;
+}
+
 export async function getSettingsWithDefaults(): Promise<Settings> {
   const settings = getSettings();
   

frontend/src/lib/spectrum-cache.ts

@@ -0,0 +1,21 @@
+// Memory cache for spectrum data (fast access, cleared on page refresh)
+// Key: file path, Value: spectrum data
+
+const spectrumCache = new Map<string, any>();
+
+export function setSpectrumCache(filePath: string, spectrumData: any): void {
+  spectrumCache.set(filePath, spectrumData);
+}
+
+export function getSpectrumCache(filePath: string): any | null {
+  return spectrumCache.get(filePath) || null;
+}
+
+export function clearSpectrumCache(filePath?: string): void {
+  if (filePath) {
+    spectrumCache.delete(filePath);
+  } else {
+    spectrumCache.clear();
+  }
+}
+

frontend/src/lib/themes.ts

@@ -7,456 +7,276 @@ export interface Theme {
   };
 }
 
-export const themes: Theme[] = [
-  {
-    name: "neutral",
-    label: "Default",
-    cssVars: {
-      light: {
+// Base colors yang sama untuk semua tema (kecuali primary dan primary-foreground)
+const baseLightColors: Record<string, string> = {
   background: "oklch(1 0 0)",
   foreground: "oklch(0.145 0 0)",
   card: "oklch(1 0 0)",
   "card-foreground": "oklch(0.145 0 0)",
   popover: "oklch(1 0 0)",
   "popover-foreground": "oklch(0.145 0 0)",
-        primary: "oklch(0.205 0 0)",
-        "primary-foreground": "oklch(0.985 0 0)",
-        secondary: "oklch(0.97 0 0)",
-        "secondary-foreground": "oklch(0.205 0 0)",
+  secondary: "oklch(0.967 0.001 286.375)",
+  "secondary-foreground": "oklch(0.21 0.006 285.885)",
   muted: "oklch(0.97 0 0)",
   "muted-foreground": "oklch(0.556 0 0)",
   accent: "oklch(0.97 0 0)",
   "accent-foreground": "oklch(0.205 0 0)",
-        destructive: "oklch(0.577 0.245 27.325)",
+  destructive: "oklch(0.58 0.22 27)",
   border: "oklch(0.922 0 0)",
   input: "oklch(0.922 0 0)",
   ring: "oklch(0.708 0 0)",
-        "chart-1": "oklch(0.646 0.222 41.116)",
-        "chart-2": "oklch(0.6 0.118 184.704)",
-        "chart-3": "oklch(0.398 0.07 227.392)",
-        "chart-4": "oklch(0.828 0.189 84.429)",
-        "chart-5": "oklch(0.769 0.188 70.08)",
-      },
-      dark: {
+};
+
+const baseDarkColors: Record<string, string> = {
   background: "oklch(0.145 0 0)",
   foreground: "oklch(0.985 0 0)",
   card: "oklch(0.205 0 0)",
   "card-foreground": "oklch(0.985 0 0)",
   popover: "oklch(0.205 0 0)",
   "popover-foreground": "oklch(0.985 0 0)",
-        primary: "oklch(0.922 0 0)",
-        "primary-foreground": "oklch(0.205 0 0)",
-        secondary: "oklch(0.269 0 0)",
+  secondary: "oklch(0.274 0.006 286.033)",
   "secondary-foreground": "oklch(0.985 0 0)",
   muted: "oklch(0.269 0 0)",
   "muted-foreground": "oklch(0.708 0 0)",
-        accent: "oklch(0.269 0 0)",
+  accent: "oklch(0.371 0 0)",
   "accent-foreground": "oklch(0.985 0 0)",
   destructive: "oklch(0.704 0.191 22.216)",
   border: "oklch(1 0 0 / 10%)",
   input: "oklch(1 0 0 / 15%)",
   ring: "oklch(0.556 0 0)",
-        "chart-1": "oklch(0.488 0.243 264.376)",
-        "chart-2": "oklch(0.696 0.17 162.48)",
-        "chart-3": "oklch(0.769 0.188 70.08)",
-        "chart-4": "oklch(0.627 0.265 303.9)",
-        "chart-5": "oklch(0.645 0.246 16.439)",
-      },
-    },
-  },
-  {
-    name: "blue",
-    label: "Blue",
-    cssVars: {
+};
+
+// Primary colors yang berbeda untuk setiap tema
+interface PrimaryColors {
   light: {
-        background: "oklch(1 0 0)",
-        foreground: "oklch(0.141 0.005 285.823)",
-        card: "oklch(1 0 0)",
-        "card-foreground": "oklch(0.141 0.005 285.823)",
-        popover: "oklch(1 0 0)",
-        "popover-foreground": "oklch(0.141 0.005 285.823)",
-        primary: "oklch(0.488 0.243 264.376)",
-        "primary-foreground": "oklch(0.97 0.014 254.604)",
-        secondary: "oklch(0.967 0.001 286.375)",
-        "secondary-foreground": "oklch(0.21 0.006 285.885)",
-        muted: "oklch(0.967 0.001 286.375)",
-        "muted-foreground": "oklch(0.552 0.016 285.938)",
-        accent: "oklch(0.967 0.001 286.375)",
-        "accent-foreground": "oklch(0.21 0.006 285.885)",
-        destructive: "oklch(0.577 0.245 27.325)",
-        border: "oklch(0.92 0.004 286.32)",
-        input: "oklch(0.92 0.004 286.32)",
-        ring: "oklch(0.708 0 0)",
-        "chart-1": "oklch(0.809 0.105 251.813)",
-        "chart-2": "oklch(0.623 0.214 259.815)",
-        "chart-3": "oklch(0.546 0.245 262.881)",
-        "chart-4": "oklch(0.488 0.243 264.376)",
-        "chart-5": "oklch(0.424 0.199 265.638)",
+    primary: string;
+    "primary-foreground": string;
+  };
+  dark: {
+    primary: string;
+    "primary-foreground": string;
+  };
+}
+
+const primaryColors: Record<string, PrimaryColors> = {
+  amber: {
+    light: {
+      primary: "oklch(0.67 0.16 58)",
+      "primary-foreground": "oklch(0.99 0.02 95)",
     },
     dark: {
-        background: "oklch(0.141 0.005 285.823)",
-        foreground: "oklch(0.985 0 0)",
-        card: "oklch(0.21 0.006 285.885)",
-        "card-foreground": "oklch(0.985 0 0)",
-        popover: "oklch(0.21 0.006 285.885)",
-        "popover-foreground": "oklch(0.985 0 0)",
+      primary: "oklch(0.77 0.16 70)",
+      "primary-foreground": "oklch(0.28 0.07 46)",
+    },
+  },
+  blue: {
+    light: {
       primary: "oklch(0.488 0.243 264.376)",
       "primary-foreground": "oklch(0.97 0.014 254.604)",
-        secondary: "oklch(0.274 0.006 286.033)",
-        "secondary-foreground": "oklch(0.985 0 0)",
-        muted: "oklch(0.274 0.006 286.033)",
-        "muted-foreground": "oklch(0.705 0.015 286.067)",
-        accent: "oklch(0.274 0.006 286.033)",
-        "accent-foreground": "oklch(0.985 0 0)",
-        destructive: "oklch(0.704 0.191 22.216)",
-        border: "oklch(1 0 0 / 10%)",
-        input: "oklch(1 0 0 / 15%)",
-        ring: "oklch(0.556 0 0)",
-        "chart-1": "oklch(0.809 0.105 251.813)",
-        "chart-2": "oklch(0.623 0.214 259.815)",
-        "chart-3": "oklch(0.546 0.245 262.881)",
-        "chart-4": "oklch(0.488 0.243 264.376)",
-        "chart-5": "oklch(0.424 0.199 265.638)",
-      },
-    },
-  },
-  {
-    name: "green",
-    label: "Green",
-    cssVars: {
-      light: {
-        background: "oklch(1 0 0)",
-        foreground: "oklch(0.141 0.005 285.823)",
-        card: "oklch(1 0 0)",
-        "card-foreground": "oklch(0.141 0.005 285.823)",
-        popover: "oklch(1 0 0)",
-        "popover-foreground": "oklch(0.141 0.005 285.823)",
-        primary: "oklch(0.648 0.2 131.684)",
-        "primary-foreground": "oklch(0.986 0.031 120.757)",
-        secondary: "oklch(0.967 0.001 286.375)",
-        "secondary-foreground": "oklch(0.21 0.006 285.885)",
-        muted: "oklch(0.967 0.001 286.375)",
-        "muted-foreground": "oklch(0.552 0.016 285.938)",
-        accent: "oklch(0.967 0.001 286.375)",
-        "accent-foreground": "oklch(0.21 0.006 285.885)",
-        destructive: "oklch(0.577 0.245 27.325)",
-        border: "oklch(0.92 0.004 286.32)",
-        input: "oklch(0.92 0.004 286.32)",
-        ring: "oklch(0.841 0.238 128.85)",
-        "chart-1": "oklch(0.871 0.15 154.449)",
-        "chart-2": "oklch(0.723 0.219 149.579)",
-        "chart-3": "oklch(0.627 0.194 149.214)",
-        "chart-4": "oklch(0.527 0.154 150.069)",
-        "chart-5": "oklch(0.448 0.119 151.328)",
     },
     dark: {
-        background: "oklch(0.141 0.005 285.823)",
-        foreground: "oklch(0.985 0 0)",
-        card: "oklch(0.21 0.006 285.885)",
-        "card-foreground": "oklch(0.985 0 0)",
-        popover: "oklch(0.21 0.006 285.885)",
-        "popover-foreground": "oklch(0.985 0 0)",
+      primary: "oklch(0.42 0.18 266)",
+      "primary-foreground": "oklch(0.97 0.014 254.604)",
+    },
+  },
+  cyan: {
+    light: {
+      primary: "oklch(0.61 0.11 222)",
+      "primary-foreground": "oklch(0.98 0.02 201)",
+    },
+    dark: {
+      primary: "oklch(0.71 0.13 215)",
+      "primary-foreground": "oklch(0.30 0.05 230)",
+    },
+  },
+  emerald: {
+    light: {
+      primary: "oklch(0.60 0.13 163)",
+      "primary-foreground": "oklch(0.98 0.02 166)",
+    },
+    dark: {
+      primary: "oklch(0.70 0.15 162)",
+      "primary-foreground": "oklch(0.26 0.05 173)",
+    },
+  },
+  fuchsia: {
+    light: {
+      primary: "oklch(0.59 0.26 323)",
+      "primary-foreground": "oklch(0.98 0.02 320)",
+    },
+    dark: {
+      primary: "oklch(0.67 0.26 322)",
+      "primary-foreground": "oklch(0.98 0.02 320)",
+    },
+  },
+  green: {
+    light: {
+      primary: "oklch(0.648 0.2 131.684)",
+      "primary-foreground": "oklch(0.986 0.031 120.757)",
+    },
+    dark: {
       primary: "oklch(0.648 0.2 131.684)",
       "primary-foreground": "oklch(0.986 0.031 120.757)",
-        secondary: "oklch(0.274 0.006 286.033)",
-        "secondary-foreground": "oklch(0.985 0 0)",
-        muted: "oklch(0.274 0.006 286.033)",
-        "muted-foreground": "oklch(0.705 0.015 286.067)",
-        accent: "oklch(0.274 0.006 286.033)",
-        "accent-foreground": "oklch(0.985 0 0)",
-        destructive: "oklch(0.704 0.191 22.216)",
-        border: "oklch(1 0 0 / 10%)",
-        input: "oklch(1 0 0 / 15%)",
-        ring: "oklch(0.405 0.101 131.063)",
-        "chart-1": "oklch(0.871 0.15 154.449)",
-        "chart-2": "oklch(0.723 0.219 149.579)",
-        "chart-3": "oklch(0.627 0.194 149.214)",
-        "chart-4": "oklch(0.527 0.154 150.069)",
-        "chart-5": "oklch(0.448 0.119 151.328)",
     },
   },
-  },
-  {
-    name: "orange",
-    label: "Orange",
-    cssVars: {
+  indigo: {
+    light: {
+      primary: "oklch(0.51 0.23 277)",
+      "primary-foreground": "oklch(0.96 0.02 272)",
+    },
+    dark: {
+      primary: "oklch(0.59 0.20 277)",
+      "primary-foreground": "oklch(0.96 0.02 272)",
+    },
+  },
+  lime: {
+    light: {
+      primary: "oklch(0.65 0.18 132)",
+      "primary-foreground": "oklch(0.99 0.03 121)",
+    },
+    dark: {
+      primary: "oklch(0.77 0.20 131)",
+      "primary-foreground": "oklch(0.27 0.07 132)",
+    },
+  },
+  neutral: {
+    light: {
+      primary: "oklch(0.205 0 0)",
+      "primary-foreground": "oklch(0.985 0 0)",
+    },
+    dark: {
+      primary: "oklch(0.922 0 0)",
+      "primary-foreground": "oklch(0.205 0 0)",
+    },
+  },
+  orange: {
     light: {
-        background: "oklch(1 0 0)",
-        foreground: "oklch(0.141 0.005 285.823)",
-        card: "oklch(1 0 0)",
-        "card-foreground": "oklch(0.141 0.005 285.823)",
-        popover: "oklch(1 0 0)",
-        "popover-foreground": "oklch(0.141 0.005 285.823)",
       primary: "oklch(0.646 0.222 41.116)",
       "primary-foreground": "oklch(0.98 0.016 73.684)",
-        secondary: "oklch(0.967 0.001 286.375)",
-        "secondary-foreground": "oklch(0.21 0.006 285.885)",
-        muted: "oklch(0.967 0.001 286.375)",
-        "muted-foreground": "oklch(0.552 0.016 285.938)",
-        accent: "oklch(0.967 0.001 286.375)",
-        "accent-foreground": "oklch(0.21 0.006 285.885)",
-        destructive: "oklch(0.577 0.245 27.325)",
-        border: "oklch(0.92 0.004 286.32)",
-        input: "oklch(0.92 0.004 286.32)",
-        ring: "oklch(0.75 0.183 55.934)",
-        "chart-1": "oklch(0.837 0.128 66.29)",
-        "chart-2": "oklch(0.705 0.213 47.604)",
-        "chart-3": "oklch(0.646 0.222 41.116)",
-        "chart-4": "oklch(0.553 0.195 38.402)",
-        "chart-5": "oklch(0.47 0.157 37.304)",
     },
     dark: {
-        background: "oklch(0.141 0.005 285.823)",
-        foreground: "oklch(0.985 0 0)",
-        card: "oklch(0.21 0.006 285.885)",
-        "card-foreground": "oklch(0.985 0 0)",
-        popover: "oklch(0.21 0.006 285.885)",
-        "popover-foreground": "oklch(0.985 0 0)",
       primary: "oklch(0.705 0.213 47.604)",
       "primary-foreground": "oklch(0.98 0.016 73.684)",
-        secondary: "oklch(0.274 0.006 286.033)",
-        "secondary-foreground": "oklch(0.985 0 0)",
-        muted: "oklch(0.274 0.006 286.033)",
-        "muted-foreground": "oklch(0.705 0.015 286.067)",
-        accent: "oklch(0.274 0.006 286.033)",
-        "accent-foreground": "oklch(0.985 0 0)",
-        destructive: "oklch(0.704 0.191 22.216)",
-        border: "oklch(1 0 0 / 10%)",
-        input: "oklch(1 0 0 / 15%)",
-        ring: "oklch(0.408 0.123 38.172)",
-        "chart-1": "oklch(0.837 0.128 66.29)",
-        "chart-2": "oklch(0.705 0.213 47.604)",
-        "chart-3": "oklch(0.646 0.222 41.116)",
-        "chart-4": "oklch(0.553 0.195 38.402)",
-        "chart-5": "oklch(0.47 0.157 37.304)",
     },
   },
-  },
-  {
-    name: "red",
-    label: "Red",
-    cssVars: {
+  pink: {
+    light: {
+      primary: "oklch(0.59 0.22 1)",
+      "primary-foreground": "oklch(0.97 0.01 343)",
+    },
+    dark: {
+      primary: "oklch(0.66 0.21 354)",
+      "primary-foreground": "oklch(0.97 0.01 343)",
+    },
+  },
+  purple: {
+    light: {
+      primary: "oklch(0.56 0.25 302)",
+      "primary-foreground": "oklch(0.98 0.01 308)",
+    },
+    dark: {
+      primary: "oklch(0.63 0.23 304)",
+      "primary-foreground": "oklch(0.98 0.01 308)",
+    },
+  },
+  red: {
     light: {
-        background: "oklch(1 0 0)",
-        foreground: "oklch(0.141 0.005 285.823)",
-        card: "oklch(1 0 0)",
-        "card-foreground": "oklch(0.141 0.005 285.823)",
-        popover: "oklch(1 0 0)",
-        "popover-foreground": "oklch(0.141 0.005 285.823)",
       primary: "oklch(0.577 0.245 27.325)",
       "primary-foreground": "oklch(0.971 0.013 17.38)",
-        secondary: "oklch(0.967 0.001 286.375)",
-        "secondary-foreground": "oklch(0.21 0.006 285.885)",
-        muted: "oklch(0.967 0.001 286.375)",
-        "muted-foreground": "oklch(0.552 0.016 285.938)",
-        accent: "oklch(0.967 0.001 286.375)",
-        "accent-foreground": "oklch(0.21 0.006 285.885)",
-        destructive: "oklch(0.577 0.245 27.325)",
-        border: "oklch(0.92 0.004 286.32)",
-        input: "oklch(0.92 0.004 286.32)",
-        ring: "oklch(0.704 0.191 22.216)",
-        "chart-1": "oklch(0.808 0.114 19.571)",
-        "chart-2": "oklch(0.637 0.237 25.331)",
-        "chart-3": "oklch(0.577 0.245 27.325)",
-        "chart-4": "oklch(0.505 0.213 27.518)",
-        "chart-5": "oklch(0.444 0.177 26.899)",
     },
     dark: {
-        background: "oklch(0.141 0.005 285.823)",
-        foreground: "oklch(0.985 0 0)",
-        card: "oklch(0.21 0.006 285.885)",
-        "card-foreground": "oklch(0.985 0 0)",
-        popover: "oklch(0.21 0.006 285.885)",
-        "popover-foreground": "oklch(0.985 0 0)",
       primary: "oklch(0.637 0.237 25.331)",
       "primary-foreground": "oklch(0.971 0.013 17.38)",
-        secondary: "oklch(0.274 0.006 286.033)",
-        "secondary-foreground": "oklch(0.985 0 0)",
-        muted: "oklch(0.274 0.006 286.033)",
-        "muted-foreground": "oklch(0.705 0.015 286.067)",
-        accent: "oklch(0.274 0.006 286.033)",
-        "accent-foreground": "oklch(0.985 0 0)",
-        destructive: "oklch(0.704 0.191 22.216)",
-        border: "oklch(1 0 0 / 10%)",
-        input: "oklch(1 0 0 / 15%)",
-        ring: "oklch(0.396 0.141 25.723)",
-        "chart-1": "oklch(0.808 0.114 19.571)",
-        "chart-2": "oklch(0.637 0.237 25.331)",
-        "chart-3": "oklch(0.577 0.245 27.325)",
-        "chart-4": "oklch(0.505 0.213 27.518)",
-        "chart-5": "oklch(0.444 0.177 26.899)",
     },
   },
-  },
-  {
-    name: "rose",
-    label: "Rose",
-    cssVars: {
+  rose: {
     light: {
-        background: "oklch(1 0 0)",
-        foreground: "oklch(0.141 0.005 285.823)",
-        card: "oklch(1 0 0)",
-        "card-foreground": "oklch(0.141 0.005 285.823)",
-        popover: "oklch(1 0 0)",
-        "popover-foreground": "oklch(0.141 0.005 285.823)",
       primary: "oklch(0.586 0.253 17.585)",
       "primary-foreground": "oklch(0.969 0.015 12.422)",
-        secondary: "oklch(0.967 0.001 286.375)",
-        "secondary-foreground": "oklch(0.21 0.006 285.885)",
-        muted: "oklch(0.967 0.001 286.375)",
-        "muted-foreground": "oklch(0.552 0.016 285.938)",
-        accent: "oklch(0.967 0.001 286.375)",
-        "accent-foreground": "oklch(0.21 0.006 285.885)",
-        destructive: "oklch(0.577 0.245 27.325)",
-        border: "oklch(0.92 0.004 286.32)",
-        input: "oklch(0.92 0.004 286.32)",
-        ring: "oklch(0.712 0.194 13.428)",
-        "chart-1": "oklch(0.81 0.117 11.638)",
-        "chart-2": "oklch(0.645 0.246 16.439)",
-        "chart-3": "oklch(0.586 0.253 17.585)",
-        "chart-4": "oklch(0.514 0.222 16.935)",
-        "chart-5": "oklch(0.455 0.188 13.697)",
     },
     dark: {
-        background: "oklch(0.141 0.005 285.823)",
-        foreground: "oklch(0.985 0 0)",
-        card: "oklch(0.21 0.006 285.885)",
-        "card-foreground": "oklch(0.985 0 0)",
-        popover: "oklch(0.21 0.006 285.885)",
-        "popover-foreground": "oklch(0.985 0 0)",
       primary: "oklch(0.645 0.246 16.439)",
       "primary-foreground": "oklch(0.969 0.015 12.422)",
-        secondary: "oklch(0.274 0.006 286.033)",
-        "secondary-foreground": "oklch(0.985 0 0)",
-        muted: "oklch(0.274 0.006 286.033)",
-        "muted-foreground": "oklch(0.705 0.015 286.067)",
-        accent: "oklch(0.274 0.006 286.033)",
-        "accent-foreground": "oklch(0.985 0 0)",
-        destructive: "oklch(0.704 0.191 22.216)",
-        border: "oklch(1 0 0 / 10%)",
-        input: "oklch(1 0 0 / 15%)",
-        ring: "oklch(0.41 0.159 10.272)",
-        "chart-1": "oklch(0.81 0.117 11.638)",
-        "chart-2": "oklch(0.645 0.246 16.439)",
-        "chart-3": "oklch(0.586 0.253 17.585)",
-        "chart-4": "oklch(0.514 0.222 16.935)",
-        "chart-5": "oklch(0.455 0.188 13.697)",
     },
   },
-  },
-  {
-    name: "violet",
-    label: "Violet",
-    cssVars: {
+  sky: {
+    light: {
+      primary: "oklch(0.59 0.14 242)",
+      "primary-foreground": "oklch(0.98 0.01 237)",
+    },
+    dark: {
+      primary: "oklch(0.68 0.15 237)",
+      "primary-foreground": "oklch(0.29 0.06 243)",
+    },
+  },
+  teal: {
+    light: {
+      primary: "oklch(0.60 0.10 185)",
+      "primary-foreground": "oklch(0.98 0.01 181)",
+    },
+    dark: {
+      primary: "oklch(0.70 0.12 183)",
+      "primary-foreground": "oklch(0.28 0.04 193)",
+    },
+  },
+  violet: {
     light: {
-        background: "oklch(1 0 0)",
-        foreground: "oklch(0.141 0.005 285.823)",
-        card: "oklch(1 0 0)",
-        "card-foreground": "oklch(0.141 0.005 285.823)",
-        popover: "oklch(1 0 0)",
-        "popover-foreground": "oklch(0.141 0.005 285.823)",
       primary: "oklch(0.541 0.281 293.009)",
       "primary-foreground": "oklch(0.969 0.016 293.756)",
-        secondary: "oklch(0.967 0.001 286.375)",
-        "secondary-foreground": "oklch(0.21 0.006 285.885)",
-        muted: "oklch(0.967 0.001 286.375)",
-        "muted-foreground": "oklch(0.552 0.016 285.938)",
-        accent: "oklch(0.967 0.001 286.375)",
-        "accent-foreground": "oklch(0.21 0.006 285.885)",
-        destructive: "oklch(0.577 0.245 27.325)",
-        border: "oklch(0.92 0.004 286.32)",
-        input: "oklch(0.92 0.004 286.32)",
-        ring: "oklch(0.702 0.183 293.541)",
-        "chart-1": "oklch(0.811 0.111 293.571)",
-        "chart-2": "oklch(0.606 0.25 292.717)",
-        "chart-3": "oklch(0.541 0.281 293.009)",
-        "chart-4": "oklch(0.491 0.27 292.581)",
-        "chart-5": "oklch(0.432 0.232 292.759)",
     },
     dark: {
-        background: "oklch(0.141 0.005 285.823)",
-        foreground: "oklch(0.985 0 0)",
-        card: "oklch(0.21 0.006 285.885)",
-        "card-foreground": "oklch(0.985 0 0)",
-        popover: "oklch(0.21 0.006 285.885)",
-        "popover-foreground": "oklch(0.985 0 0)",
       primary: "oklch(0.606 0.25 292.717)",
       "primary-foreground": "oklch(0.969 0.016 293.756)",
-        secondary: "oklch(0.274 0.006 286.033)",
-        "secondary-foreground": "oklch(0.985 0 0)",
-        muted: "oklch(0.274 0.006 286.033)",
-        "muted-foreground": "oklch(0.705 0.015 286.067)",
-        accent: "oklch(0.274 0.006 286.033)",
-        "accent-foreground": "oklch(0.985 0 0)",
-        destructive: "oklch(0.704 0.191 22.216)",
-        border: "oklch(1 0 0 / 10%)",
-        input: "oklch(1 0 0 / 15%)",
-        ring: "oklch(0.38 0.189 293.745)",
-        "chart-1": "oklch(0.811 0.111 293.571)",
-        "chart-2": "oklch(0.606 0.25 292.717)",
-        "chart-3": "oklch(0.541 0.281 293.009)",
-        "chart-4": "oklch(0.491 0.27 292.581)",
-        "chart-5": "oklch(0.432 0.232 292.759)",
     },
   },
-  },
-  {
-    name: "yellow",
-    label: "Yellow",
-    cssVars: {
+  yellow: {
     light: {
-        background: "oklch(1 0 0)",
-        foreground: "oklch(0.141 0.005 285.823)",
-        card: "oklch(1 0 0)",
-        "card-foreground": "oklch(0.141 0.005 285.823)",
-        popover: "oklch(1 0 0)",
-        "popover-foreground": "oklch(0.141 0.005 285.823)",
       primary: "oklch(0.852 0.199 91.936)",
       "primary-foreground": "oklch(0.421 0.095 57.708)",
-        secondary: "oklch(0.967 0.001 286.375)",
-        "secondary-foreground": "oklch(0.21 0.006 285.885)",
-        muted: "oklch(0.967 0.001 286.375)",
-        "muted-foreground": "oklch(0.552 0.016 285.938)",
-        accent: "oklch(0.967 0.001 286.375)",
-        "accent-foreground": "oklch(0.21 0.006 285.885)",
-        destructive: "oklch(0.577 0.245 27.325)",
-        border: "oklch(0.92 0.004 286.32)",
-        input: "oklch(0.92 0.004 286.32)",
-        ring: "oklch(0.852 0.199 91.936)",
-        "chart-1": "oklch(0.905 0.182 98.111)",
-        "chart-2": "oklch(0.795 0.184 86.047)",
-        "chart-3": "oklch(0.681 0.162 75.834)",
-        "chart-4": "oklch(0.554 0.135 66.442)",
-        "chart-5": "oklch(0.476 0.114 61.907)",
     },
     dark: {
-        background: "oklch(0.141 0.005 285.823)",
-        foreground: "oklch(0.985 0 0)",
-        card: "oklch(0.21 0.006 285.885)",
-        "card-foreground": "oklch(0.985 0 0)",
-        popover: "oklch(0.21 0.006 285.885)",
-        "popover-foreground": "oklch(0.985 0 0)",
       primary: "oklch(0.795 0.184 86.047)",
       "primary-foreground": "oklch(0.421 0.095 57.708)",
-        secondary: "oklch(0.274 0.006 286.033)",
-        "secondary-foreground": "oklch(0.985 0 0)",
-        muted: "oklch(0.274 0.006 286.033)",
-        "muted-foreground": "oklch(0.705 0.015 286.067)",
-        accent: "oklch(0.274 0.006 286.033)",
-        "accent-foreground": "oklch(0.985 0 0)",
-        destructive: "oklch(0.704 0.191 22.216)",
-        border: "oklch(1 0 0 / 10%)",
-        input: "oklch(1 0 0 / 15%)",
-        ring: "oklch(0.421 0.095 57.708)",
-        "chart-1": "oklch(0.905 0.182 98.111)",
-        "chart-2": "oklch(0.795 0.184 86.047)",
-        "chart-3": "oklch(0.681 0.162 75.834)",
-        "chart-4": "oklch(0.554 0.135 66.442)",
-        "chart-5": "oklch(0.476 0.114 61.907)",
     },
   },
+};
+
+// Helper function untuk menggabungkan base colors dengan primary colors
+function createTheme(
+  name: string,
+  label: string,
+  primary: PrimaryColors
+): Theme {
+  return {
+    name,
+    label,
+    cssVars: {
+      light: { ...baseLightColors, ...primary.light },
+      dark: { ...baseDarkColors, ...primary.dark },
     },
-];
+  };
+}
+
+export const themes: Theme[] = [
+  createTheme("amber", "Amber", primaryColors.amber),
+  createTheme("blue", "Blue", primaryColors.blue),
+  createTheme("cyan", "Cyan", primaryColors.cyan),
+  createTheme("emerald", "Emerald", primaryColors.emerald),
+  createTheme("fuchsia", "Fuchsia", primaryColors.fuchsia),
+  createTheme("green", "Green", primaryColors.green),
+  createTheme("indigo", "Indigo", primaryColors.indigo),
+  createTheme("lime", "Lime", primaryColors.lime),
+  createTheme("neutral", "Neutral", primaryColors.neutral),
+  createTheme("orange", "Orange", primaryColors.orange),
+  createTheme("pink", "Pink", primaryColors.pink),
+  createTheme("purple", "Purple", primaryColors.purple),
+  createTheme("red", "Red", primaryColors.red),
+  createTheme("rose", "Rose", primaryColors.rose),
+  createTheme("sky", "Sky", primaryColors.sky),
+  createTheme("teal", "Teal", primaryColors.teal),
+  createTheme("violet", "Violet", primaryColors.violet),
+  createTheme("yellow", "Yellow", primaryColors.yellow),
+].sort((a, b) => a.name.localeCompare(b.name));
 
 export function applyTheme(themeName: string) {
   const theme = themes.find((t) => t.name === themeName) || themes[0];

frontend/src/types/api.ts

@@ -8,10 +8,13 @@ export interface TrackMetadata {
   artists: string;
   name: string;
   album_name: string;
+  album_artist?: string;
   duration_ms: number;
   images: string;
   release_date: string;
   track_number: number;
+  total_tracks?: number; // Total tracks in album
+  disc_number?: number;
   external_urls: string;
   isrc: string;
   album_type?: string;
@@ -109,11 +112,14 @@ export type SpotifyMetadataResponse =
 
 export interface DownloadRequest {
   isrc: string;
-  service: "deezer" | "tidal" | "qobuz" | "amazon";
+  service: "tidal" | "qobuz" | "amazon";
   query?: string;
   track_name?: string;
   artist_name?: string;
   album_name?: string;
+  album_artist?: string;
+  release_date?: string;
+  cover_url?: string; // Spotify cover URL for embedding
   api_url?: string;
   output_dir?: string;
   audio_format?: string;
@@ -123,9 +129,14 @@ export interface DownloadRequest {
   position?: number;
   use_album_track_number?: boolean;
   spotify_id?: string;
+  embed_lyrics?: boolean; // Whether to embed lyrics into the audio file
+  embed_max_quality_cover?: boolean; // Whether to embed max quality cover art
   service_url?: string;
   duration?: number; // Track duration in seconds for better matching
   item_id?: string; // Optional queue item ID for multi-service fallback tracking
+  spotify_track_number?: number; // Track number from Spotify album
+  spotify_disc_number?: number; // Disc number from Spotify album
+  spotify_total_tracks?: number; // Total tracks in album from Spotify
 }
 
 export interface DownloadResponse {
@@ -191,11 +202,9 @@ export interface LyricsDownloadResponse {
 export interface TrackAvailability {
   spotify_id: string;
   tidal: boolean;
-  deezer: boolean;
   amazon: boolean;
   qobuz: boolean;
   tidal_url?: string;
-  deezer_url?: string;
   amazon_url?: string;
   qobuz_url?: string;
 }

go.mod

@@ -3,10 +3,12 @@ module spotiflac
 go 1.25.4
 
 require (
+	github.com/bogem/id3v2/v2 v2.1.4
 	github.com/go-flac/flacpicture v0.3.0
 	github.com/go-flac/flacvorbis v0.2.0
 	github.com/go-flac/go-flac v1.0.0
 	github.com/mewkiz/flac v1.0.13
+	github.com/ulikunitz/xz v0.5.15
 	github.com/wailsapp/wails/v2 v2.11.0
 )
 

go.sum

@@ -1,5 +1,7 @@
 github.com/bep/debounce v1.2.1 h1:v67fRdBA9UQu2NhLFXrSg0Brw7CexQekrBwDMM8bzeY=
 github.com/bep/debounce v1.2.1/go.mod h1:H8yggRPQKLUhUoqrJC1bO2xNya7vanpDl7xR3ISbCJ0=
+github.com/bogem/id3v2/v2 v2.1.4 h1:CEwe+lS2p6dd9UZRlPc1zbFNIha2mb2qzT1cCEoNWoI=
+github.com/bogem/id3v2/v2 v2.1.4/go.mod h1:l+gR8MZ6rc9ryPTPkX77smS5Me/36gxkMgDayZ9G1vY=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/go-flac/flacpicture v0.3.0 h1:LkmTxzFLIynwfhHiZsX0s8xcr3/u33MzvV89u+zOT8I=
@@ -64,6 +66,8 @@ github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOf
 github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 github.com/tkrajina/go-reflector v0.5.8 h1:yPADHrwmUbMq4RGEyaOUpz2H90sRsETNVpjzo3DLVQQ=
 github.com/tkrajina/go-reflector v0.5.8/go.mod h1:ECbqLgccecY5kPmPmXg1MrHW585yMcDkVl6IvJe64T4=
+github.com/ulikunitz/xz v0.5.15 h1:9DNdB5s+SgV3bQ2ApL10xRc35ck0DuIX/isZvIk+ubY=
+github.com/ulikunitz/xz v0.5.15/go.mod h1:nbz6k7qbPmH4IRqmfOplQw/tblSgqTqBwxkY0oWt/14=
 github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
 github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
 github.com/valyala/fasttemplate v1.2.2 h1:lxLXG0uE3Qnshl9QyaK6XJxMXlQZELvChBOCmQD0Loo=
@@ -74,22 +78,43 @@ github.com/wailsapp/mimetype v1.4.1 h1:pQN9ycO7uo4vsUUuPeHEYoUkLVkaRntMnHJxVwYhw
 github.com/wailsapp/mimetype v1.4.1/go.mod h1:9aV5k31bBOv5z6u+QP8TltzvNGJPmNJD4XlAL3U+j3o=
 github.com/wailsapp/wails/v2 v2.11.0 h1:seLacV8pqupq32IjS4Y7V8ucab0WZwtK6VvUVxSBtqQ=
 github.com/wailsapp/wails/v2 v2.11.0/go.mod h1:jrf0ZaM6+GBc1wRmXsM8cIvzlg0karYin3erahI4+0k=
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/crypto v0.45.0 h1:jMBrvKuj23MTlT0bQEOBcAE0mjg8mK9RXFhRH6nyF3Q=
 golang.org/x/crypto v0.45.0/go.mod h1:XTGrrkGJve7CYK7J8PEww4aY7gM3qMCElcJQ8n8JdX4=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210505024714-0287a6fb4125/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
 golang.org/x/net v0.47.0 h1:Mx+4dIFzqraBXUugkia1OOvlD6LemFo1ALMHjrXDOhY=
 golang.org/x/net v0.47.0/go.mod h1:/jNxtkgq5yWUGYkaZGqo27cfGZ1c5Nen03aYrrKpVRU=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20200810151505-1b9f1253b3ed/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
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tidal.json

@@ -2,9 +2,11 @@
   "vogel.qqdl.site",
   "maus.qqdl.site",
   "hund.qqdl.site",
-  "eu-maus.qqdl.site",
-  "eu-katze.qqdl.site",
   "katze.qqdl.site",
   "wolf.qqdl.site",
-  "tidal.kinoplus.online"
+  "tidal.kinoplus.online",
+  "tidal-api.binimum.org",
+  "tidal-api-2.binimum.org",
+  "dev-api.squid.wtf",
+  "triton.squid.wtf"
 ]

version.json

@@ -1,3 +0,0 @@
-{
-  "version": "6.6"
-}

wails.json

@@ -12,7 +12,7 @@
   },
   "info": {
     "productName": "SpotiFLAC",
-    "productVersion": "6.6"
+    "productVersion": "6.8"
   },
   "wailsjsdir": "./frontend",
   "assetdir": "./frontend/dist",