v6.6

* Add download queue tracking and UI integration

Introduces backend support for a download queue with item tracking, status updates, and session statistics. Adds frontend components and hooks for displaying and managing the download queue, including a dialog and toast indicator. Updates download logic to pre-add items to the queue, track progress, and handle completion, skipping, and failure states. Integrates @radix-ui/react-scroll-area for improved UI scrolling.

* Add session stats to DownloadQueue dialog

Introduces session statistics (downloaded amount, speed, and duration) to the DownloadQueue dialog for improved user feedback. Also adjusts dialog sizing for better display and removes the sm:max-w-lg restriction in dialog.tsx for more flexible width.

.github/workflows/build.yml

@@ -2,18 +2,13 @@ name: Build Multi-Platform
 
 on:
   push:
-    branches:
-      - main
     tags:
       - 'v*'
-  pull_request:
-    branches:
-      - main
   workflow_dispatch:
 
 env:
   GO_VERSION: '1.25.4'
-  NODE_VERSION: '20'
+  NODE_VERSION: '24'
 
 jobs:
   build-windows:
@@ -72,9 +67,17 @@ jobs:
           pnpm install
           pnpm run generate-icon
 
+      - name: Install UPX
+        run: |
+          choco install upx -y
+
       - name: Build application
         run: wails build -platform windows/amd64
 
+      - name: Compress with UPX
+        run: |
+          upx --best --lzma "build\bin\SpotiFLAC.exe"
+
       - name: Prepare artifacts
         run: |
           mkdir -p dist
@@ -219,7 +222,7 @@ jobs:
       - name: Install dependencies
         run: |
           sudo apt-get update
-          sudo apt-get install -y libgtk-3-dev libwebkit2gtk-4.1-dev libfuse2 imagemagick
+          sudo apt-get install -y libgtk-3-dev libwebkit2gtk-4.1-dev libfuse2 imagemagick upx-ucl
 
           # Create symlink for webkit2gtk-4.0 -> webkit2gtk-4.1 (Ubuntu 24.04 compatibility)
           sudo ln -sf /usr/lib/x86_64-linux-gnu/pkgconfig/webkit2gtk-4.1.pc /usr/lib/x86_64-linux-gnu/pkgconfig/webkit2gtk-4.0.pc
@@ -236,6 +239,10 @@ jobs:
       - name: Build application
         run: wails build -platform linux/amd64
 
+      - name: Compress with UPX
+        run: |
+          upx --best --lzma build/bin/SpotiFLAC
+
       - name: Download appimagetool
         run: |
           wget -O appimagetool https://github.com/AppImage/AppImageKit/releases/download/continuous/appimagetool-x86_64.AppImage

README.md

@@ -6,9 +6,7 @@
 
 Get Spotify tracks in true FLAC from Tidal, Deezer, Qobuz & Amazon Music — no account required.
 
-<br><br>
-
-![Windows](https://img.shields.io/badge/Windows-10%2B-0078D6?style=for-the-badge&logo=windows&logoColor=white)
+![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)
 ![Linux](https://img.shields.io/badge/Linux-Any-FCC624?style=for-the-badge&logo=linux&logoColor=white)
 
@@ -18,9 +16,9 @@ Get Spotify tracks in true FLAC from Tidal, Deezer, Qobuz & Amazon Music — no
 
 ## Screenshot
 
-![Image](https://github.com/user-attachments/assets/adb2b0b4-7758-43fc-8f11-db49eec878db)
+![Image](https://github.com/user-attachments/assets/4da39b61-dcf8-4018-83e4-b8750a671245)
 
-## Lossless Audio Check
+## Lossless Audio Checker
 
 A simple utility for verifying the authenticity of FLAC files.
 
@@ -32,7 +30,7 @@ A simple utility for verifying the authenticity of FLAC files.
 
 ![image](https://github.com/user-attachments/assets/7649e6e1-d5d1-49b3-b83f-965d44651d05)
 
-## Other projects
+## Other project
 
 ### [SpotiDownloader](https://github.com/afkarxyz/SpotiDownloader) 
 

app.go

@@ -52,6 +52,8 @@ type DownloadRequest struct {
 	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
 	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
 }
 
 // DownloadResponse represents the response structure for download operations
@@ -61,6 +63,7 @@ type DownloadResponse struct {
 	File          string `json:"file,omitempty"`
 	Error         string `json:"error,omitempty"`
 	AlreadyExists bool   `json:"already_exists,omitempty"`
+	ItemID        string `json:"item_id,omitempty"` // Queue item ID for tracking
 }
 
 // GetStreamingURLs fetches all streaming URLs from song.link API
@@ -142,14 +145,30 @@ func (a *App) DownloadTrack(req DownloadRequest) (DownloadResponse, error) {
 		req.FilenameFormat = "title-artist"
 	}
 
+	// ItemID should always be provided by frontend (created via AddToDownloadQueue)
+	// If not provided, generate one for backwards compatibility
+	itemID := req.ItemID
+	if itemID == "" {
+		itemID = fmt.Sprintf("%s-%d", req.ISRC, time.Now().UnixNano())
+		// Add to queue if no ItemID was provided (legacy support)
+		backend.AddToQueue(itemID, req.TrackName, req.ArtistName, req.AlbumName, req.ISRC)
+	}
+
+	// Mark item as downloading immediately
+	backend.SetDownloading(true)
+	backend.StartDownloadItem(itemID)
+	defer backend.SetDownloading(false)
+
 	// Early check: Check if file with same ISRC already exists
 	if existingFile, exists := backend.CheckISRCExists(req.OutputDir, req.ISRC); exists {
 		fmt.Printf("File with ISRC %s already exists: %s\n", req.ISRC, existingFile)
+		backend.SkipDownloadItem(itemID, existingFile)
 		return DownloadResponse{
 			Success:       true,
 			Message:       "File with same ISRC already exists",
 			File:          existingFile,
 			AlreadyExists: true,
+			ItemID:        itemID,
 		}, nil
 	}
 
@@ -158,19 +177,27 @@ func (a *App) DownloadTrack(req DownloadRequest) (DownloadResponse, error) {
 		expectedFilename := backend.BuildExpectedFilename(req.TrackName, req.ArtistName, req.FilenameFormat, req.TrackNumber, req.Position, req.UseAlbumTrackNumber)
 		expectedPath := filepath.Join(req.OutputDir, expectedFilename)
 
-		if fileInfo, err := os.Stat(expectedPath); err == nil && fileInfo.Size() > 0 {
+		if fileInfo, err := os.Stat(expectedPath); err == nil && fileInfo.Size() > 100*1024 {
+			// Validate the file by checking if it has valid ISRC metadata
+			if fileISRC, readErr := backend.ReadISRCFromFile(expectedPath); readErr == nil && fileISRC != "" {
+				// File exists and has valid metadata - skip download
+				backend.SkipDownloadItem(itemID, expectedPath)
 				return DownloadResponse{
 					Success:       true,
 					Message:       "File already exists",
 					File:          expectedPath,
 					AlreadyExists: true,
+					ItemID:        itemID,
 				}, nil
+			} else {
+				// File exists but has no valid ISRC metadata - it's corrupted, delete it
+				fmt.Printf("Removing corrupted file (no valid ISRC metadata): %s\n", expectedPath)
+				if removeErr := os.Remove(expectedPath); removeErr != nil {
+					fmt.Printf("Warning: Failed to remove corrupted file %s: %v\n", expectedPath, removeErr)
+				}
+			}
 		}
 	}
-
-	// Set downloading state
-	backend.SetDownloading(true)
-	defer backend.SetDownloading(false)
 
 	switch req.Service {
 	case "amazon":
@@ -201,7 +228,8 @@ func (a *App) DownloadTrack(req DownloadRequest) (DownloadResponse, error) {
 						Error:   "Spotify ID is required for Tidal",
 					}, fmt.Errorf("spotify ID is required for Tidal")
 				}
-				filename, err = downloader.DownloadWithFallback(req.SpotifyID, req.OutputDir, req.AudioFormat, req.FilenameFormat, req.TrackNumber, req.Position, req.TrackName, req.ArtistName, req.AlbumName, req.UseAlbumTrackNumber)
+				// 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)
 			}
 		} else {
 			downloader := backend.NewTidalDownloader(req.ApiURL)
@@ -215,7 +243,8 @@ func (a *App) DownloadTrack(req DownloadRequest) (DownloadResponse, error) {
 						Error:   "Spotify ID is required for Tidal",
 					}, fmt.Errorf("spotify ID is required for Tidal")
 				}
-				filename, err = downloader.Download(req.SpotifyID, req.OutputDir, req.AudioFormat, req.FilenameFormat, req.TrackNumber, req.Position, req.TrackName, req.ArtistName, req.AlbumName, req.UseAlbumTrackNumber)
+				// 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)
 			}
 		}
 
@@ -240,9 +269,23 @@ func (a *App) DownloadTrack(req DownloadRequest) (DownloadResponse, error) {
 	}
 
 	if err != nil {
+		// Clean up any partial/corrupted file that was created during failed download
+		if filename != "" && !strings.HasPrefix(filename, "EXISTS:") {
+			// Check if file exists and delete it
+			if _, statErr := os.Stat(filename); statErr == nil {
+				fmt.Printf("Removing corrupted/partial file after failed download: %s\n", filename)
+				if removeErr := os.Remove(filename); removeErr != nil {
+					fmt.Printf("Warning: Failed to remove corrupted file %s: %v\n", filename, removeErr)
+				}
+			}
+		}
+
+		// Don't mark as failed in backend - let the frontend handle it
+		// Frontend will call MarkDownloadItemFailed after all services are tried
 		return DownloadResponse{
 			Success: false,
 			Error:   fmt.Sprintf("Download failed: %v", err),
+			ItemID:  itemID,
 		}, err
 	}
 
@@ -256,6 +299,16 @@ func (a *App) DownloadTrack(req DownloadRequest) (DownloadResponse, error) {
 	message := "Download completed successfully"
 	if alreadyExists {
 		message = "File already exists"
+		backend.SkipDownloadItem(itemID, filename)
+	} else {
+		// Get file size for completed download
+		if fileInfo, statErr := os.Stat(filename); statErr == nil {
+			finalSize := float64(fileInfo.Size()) / (1024 * 1024) // Convert to MB
+			backend.CompleteDownloadItem(itemID, filename, finalSize)
+		} else {
+			// Fallback: mark as completed without size
+			backend.CompleteDownloadItem(itemID, filename, 0)
+		}
 	}
 
 	return DownloadResponse{
@@ -263,6 +316,7 @@ func (a *App) DownloadTrack(req DownloadRequest) (DownloadResponse, error) {
 		Message:       message,
 		File:          filename,
 		AlreadyExists: alreadyExists,
+		ItemID:        itemID,
 	}, nil
 }
 
@@ -285,6 +339,11 @@ func (a *App) SelectFolder(defaultPath string) (string, error) {
 	return backend.SelectFolderDialog(a.ctx, defaultPath)
 }
 
+// SelectFile opens a file selection dialog and returns the selected file path
+func (a *App) SelectFile() (string, error) {
+	return backend.SelectFileDialog(a.ctx)
+}
+
 // GetDefaults returns the default configuration
 func (a *App) GetDefaults() map[string]string {
 	return map[string]string{
@@ -297,8 +356,190 @@ func (a *App) GetDownloadProgress() backend.ProgressInfo {
 	return backend.GetDownloadProgress()
 }
 
+// GetDownloadQueue returns the complete download queue state
+func (a *App) GetDownloadQueue() backend.DownloadQueueInfo {
+	return backend.GetDownloadQueue()
+}
+
+// ClearCompletedDownloads clears completed, failed, and skipped items from the queue
+func (a *App) ClearCompletedDownloads() {
+	backend.ClearDownloadQueue()
+}
+
+// ClearAllDownloads clears the entire queue and resets session stats
+func (a *App) ClearAllDownloads() {
+	backend.ClearAllDownloads()
+}
+
+// AddToDownloadQueue adds a new item to the download queue and returns its ID
+func (a *App) AddToDownloadQueue(isrc, trackName, artistName, albumName string) string {
+	itemID := fmt.Sprintf("%s-%d", isrc, time.Now().UnixNano())
+	backend.AddToQueue(itemID, trackName, artistName, albumName, isrc)
+	return itemID
+}
+
+// MarkDownloadItemFailed marks a download item as failed
+func (a *App) MarkDownloadItemFailed(itemID, errorMsg string) {
+	backend.FailDownloadItem(itemID, errorMsg)
+}
+
+// CancelAllQueuedItems marks all queued items as cancelled/skipped
+func (a *App) CancelAllQueuedItems() {
+	backend.CancelAllQueuedItems()
+}
+
 // Quit closes the application
 func (a *App) Quit() {
 	// You can add cleanup logic here if needed
 	panic("quit") // This will trigger Wails to close the app
 }
+
+// AnalyzeTrack analyzes audio quality of a FLAC file
+func (a *App) AnalyzeTrack(filePath string) (string, error) {
+	if filePath == "" {
+		return "", fmt.Errorf("file path is required")
+	}
+
+	result, err := backend.AnalyzeTrack(filePath)
+	if err != nil {
+		return "", fmt.Errorf("failed to analyze track: %v", err)
+	}
+
+	jsonData, err := json.Marshal(result)
+	if err != nil {
+		return "", fmt.Errorf("failed to encode response: %v", err)
+	}
+
+	return string(jsonData), nil
+}
+
+// AnalyzeMultipleTracks analyzes multiple FLAC files
+func (a *App) AnalyzeMultipleTracks(filePaths []string) (string, error) {
+	if len(filePaths) == 0 {
+		return "", fmt.Errorf("at least one file path is required")
+	}
+
+	results := make([]*backend.AnalysisResult, 0, len(filePaths))
+
+	for _, filePath := range filePaths {
+		result, err := backend.AnalyzeTrack(filePath)
+		if err != nil {
+			// Skip failed analyses
+			continue
+		}
+		results = append(results, result)
+	}
+
+	jsonData, err := json.Marshal(results)
+	if err != nil {
+		return "", fmt.Errorf("failed to encode response: %v", err)
+	}
+
+	return string(jsonData), nil
+}
+
+// LyricsDownloadRequest represents the request structure for downloading lyrics
+type LyricsDownloadRequest struct {
+	SpotifyID           string `json:"spotify_id"`
+	TrackName           string `json:"track_name"`
+	ArtistName          string `json:"artist_name"`
+	OutputDir           string `json:"output_dir"`
+	FilenameFormat      string `json:"filename_format"`
+	TrackNumber         bool   `json:"track_number"`
+	Position            int    `json:"position"`
+	UseAlbumTrackNumber bool   `json:"use_album_track_number"`
+}
+
+// DownloadLyrics downloads lyrics for a single track
+func (a *App) DownloadLyrics(req LyricsDownloadRequest) (backend.LyricsDownloadResponse, error) {
+	if req.SpotifyID == "" {
+		return backend.LyricsDownloadResponse{
+			Success: false,
+			Error:   "Spotify ID is required",
+		}, fmt.Errorf("spotify ID is required")
+	}
+
+	client := backend.NewLyricsClient()
+	backendReq := backend.LyricsDownloadRequest{
+		SpotifyID:           req.SpotifyID,
+		TrackName:           req.TrackName,
+		ArtistName:          req.ArtistName,
+		OutputDir:           req.OutputDir,
+		FilenameFormat:      req.FilenameFormat,
+		TrackNumber:         req.TrackNumber,
+		Position:            req.Position,
+		UseAlbumTrackNumber: req.UseAlbumTrackNumber,
+	}
+
+	resp, err := client.DownloadLyrics(backendReq)
+	if err != nil {
+		return backend.LyricsDownloadResponse{
+			Success: false,
+			Error:   err.Error(),
+		}, err
+	}
+
+	return *resp, nil
+}
+
+// CoverDownloadRequest represents the request structure for downloading cover art
+type CoverDownloadRequest struct {
+	CoverURL       string `json:"cover_url"`
+	TrackName      string `json:"track_name"`
+	ArtistName     string `json:"artist_name"`
+	OutputDir      string `json:"output_dir"`
+	FilenameFormat string `json:"filename_format"`
+	TrackNumber    bool   `json:"track_number"`
+	Position       int    `json:"position"`
+}
+
+// DownloadCover downloads cover art for a single track
+func (a *App) DownloadCover(req CoverDownloadRequest) (backend.CoverDownloadResponse, error) {
+	if req.CoverURL == "" {
+		return backend.CoverDownloadResponse{
+			Success: false,
+			Error:   "Cover URL is required",
+		}, fmt.Errorf("cover URL is required")
+	}
+
+	client := backend.NewCoverClient()
+	backendReq := backend.CoverDownloadRequest{
+		CoverURL:       req.CoverURL,
+		TrackName:      req.TrackName,
+		ArtistName:     req.ArtistName,
+		OutputDir:      req.OutputDir,
+		FilenameFormat: req.FilenameFormat,
+		TrackNumber:    req.TrackNumber,
+		Position:       req.Position,
+	}
+
+	resp, err := client.DownloadCover(backendReq)
+	if err != nil {
+		return backend.CoverDownloadResponse{
+			Success: false,
+			Error:   err.Error(),
+		}, err
+	}
+
+	return *resp, nil
+}
+
+// CheckTrackAvailability checks the availability of a track on different streaming platforms
+func (a *App) CheckTrackAvailability(spotifyTrackID string, isrc string) (string, error) {
+	if spotifyTrackID == "" {
+		return "", fmt.Errorf("spotify track ID is required")
+	}
+
+	client := backend.NewSongLinkClient()
+	availability, err := client.CheckTrackAvailability(spotifyTrackID, isrc)
+	if err != nil {
+		return "", err
+	}
+
+	jsonData, err := json.Marshal(availability)
+	if err != nil {
+		return "", fmt.Errorf("failed to encode response: %v", err)
+	}
+
+	return string(jsonData), nil
+}

backend/analysis.go

@@ -0,0 +1,181 @@
+package backend
+
+import (
+	"fmt"
+	"math"
+	"os"
+
+	"github.com/go-flac/go-flac"
+	mewflac "github.com/mewkiz/flac"
+)
+
+// AnalysisResult contains the audio analysis data
+type AnalysisResult struct {
+	FilePath      string        `json:"file_path"`
+	SampleRate    uint32        `json:"sample_rate"`
+	Channels      uint8         `json:"channels"`
+	BitsPerSample uint8         `json:"bits_per_sample"`
+	TotalSamples  uint64        `json:"total_samples"`
+	Duration      float64       `json:"duration"`
+	BitDepth      string        `json:"bit_depth"`
+	DynamicRange  float64       `json:"dynamic_range"`
+	PeakAmplitude float64       `json:"peak_amplitude"`
+	RMSLevel      float64       `json:"rms_level"`
+	Spectrum      *SpectrumData `json:"spectrum,omitempty"`
+}
+
+// AnalyzeTrack performs audio analysis on a FLAC file
+func AnalyzeTrack(filepath string) (*AnalysisResult, error) {
+	if !fileExists(filepath) {
+		return nil, fmt.Errorf("file does not exist: %s", filepath)
+	}
+
+	// Parse FLAC file
+	f, err := flac.ParseFile(filepath)
+	if err != nil {
+		return nil, fmt.Errorf("failed to parse FLAC file: %w", err)
+	}
+
+	result := &AnalysisResult{
+		FilePath: filepath,
+	}
+
+	// Extract basic audio properties from STREAMINFO block
+	if len(f.Meta) > 0 {
+		streamInfo := f.Meta[0]
+		if streamInfo.Type == flac.StreamInfo {
+			// Read STREAMINFO data
+			data := streamInfo.Data
+			if len(data) >= 18 {
+				// Sample rate (bits 10-29 of bytes 10-13)
+				result.SampleRate = uint32(data[10])<<12 | uint32(data[11])<<4 | uint32(data[12])>>4
+
+				// Channels (bits 30-32 of byte 12)
+				result.Channels = ((data[12] >> 1) & 0x07) + 1
+
+				// Bits per sample (bits 33-37 of bytes 12-13)
+				result.BitsPerSample = ((data[12]&0x01)<<4 | data[13]>>4) + 1
+
+				// Total samples (bits 38-73 of bytes 13-17)
+				result.TotalSamples = uint64(data[13]&0x0F)<<32 |
+					uint64(data[14])<<24 |
+					uint64(data[15])<<16 |
+					uint64(data[16])<<8 |
+					uint64(data[17])
+
+				// Calculate duration
+				if result.SampleRate > 0 {
+					result.Duration = float64(result.TotalSamples) / float64(result.SampleRate)
+				}
+
+				// Read min/max frame size and block size for additional analysis
+				// Min block size (bytes 0-1)
+				// Max block size (bytes 2-3)
+				// These can give us hints about encoding quality
+			}
+		}
+	}
+
+	// Analyze spectrum and calculate real audio metrics
+	spectrum, err := AnalyzeSpectrum(filepath)
+	if err != nil {
+		// Log error but continue
+		fmt.Printf("Warning: failed to analyze spectrum: %v\n", err)
+	} else {
+		result.Spectrum = spectrum
+		// Calculate dynamic range, peak, and RMS from decoded samples
+		calculateRealAudioMetrics(result, filepath)
+	}
+
+	// Set bit depth
+	result.BitDepth = fmt.Sprintf("%d-bit", result.BitsPerSample)
+
+	return result, nil
+}
+
+// calculateRealAudioMetrics calculates actual dynamic range, peak, and RMS from decoded audio
+func calculateRealAudioMetrics(result *AnalysisResult, filepath string) {
+	// Decode FLAC to get actual samples
+	samples, err := decodeFLACForMetrics(filepath)
+	if err != nil {
+		return
+	}
+
+	// Calculate peak amplitude
+	var peak float64
+	var sumSquares float64
+
+	for _, sample := range samples {
+		absVal := sample
+		if absVal < 0 {
+			absVal = -absVal
+		}
+		if absVal > peak {
+			peak = absVal
+		}
+		sumSquares += sample * sample
+	}
+
+	// Convert peak to dB (reference: 1.0 = 0 dBFS)
+	peakDB := 20.0 * math.Log10(peak)
+	result.PeakAmplitude = peakDB
+
+	// Calculate RMS (Root Mean Square)
+	rms := math.Sqrt(sumSquares / float64(len(samples)))
+	rmsDB := 20.0 * math.Log10(rms)
+	result.RMSLevel = rmsDB
+
+	// Dynamic range is the difference between peak and RMS
+	result.DynamicRange = peakDB - rmsDB
+}
+
+// decodeFLACForMetrics decodes FLAC file and returns normalized samples for metric calculation
+func decodeFLACForMetrics(filepath string) ([]float64, error) {
+	stream, err := mewflac.ParseFile(filepath)
+	if err != nil {
+		return nil, err
+	}
+	defer stream.Close()
+
+	// Limit samples to prevent memory issues (10 million samples = ~3.8 minutes at 44.1kHz)
+	maxSamples := 10000000
+	samples := make([]float64, 0, maxSamples)
+
+	// Read all audio frames
+	for {
+		frame, err := stream.ParseNext()
+		if err != nil {
+			break
+		}
+
+		// Get samples from first channel (mono or left channel)
+		var channelSamples []int32
+		if len(frame.Subframes) > 0 {
+			channelSamples = frame.Subframes[0].Samples
+		}
+
+		// Normalize samples to -1.0 to 1.0 range
+		maxVal := float64(int64(1) << (stream.Info.BitsPerSample - 1))
+		for _, sample := range channelSamples {
+			if len(samples) >= maxSamples {
+				return samples, nil
+			}
+			normalized := float64(sample) / maxVal
+			samples = append(samples, normalized)
+		}
+
+		if len(samples) >= maxSamples {
+			break
+		}
+	}
+
+	return samples, nil
+}
+
+func GetFileSize(filepath string) (int64, error) {
+	info, err := os.Stat(filepath)
+	if err != nil {
+		return 0, err
+	}
+	return info.Size(), nil
+}

backend/cover.go

@@ -0,0 +1,176 @@
+package backend
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+)
+
+const (
+	// Spotify image size codes
+	spotifySize640 = "ab67616d0000b273" // 640x640
+	spotifySizeMax = "ab67616d000082c1" // Max resolution
+)
+
+// CoverDownloadRequest represents a request to download cover art
+type CoverDownloadRequest struct {
+	CoverURL       string `json:"cover_url"`
+	TrackName      string `json:"track_name"`
+	ArtistName     string `json:"artist_name"`
+	OutputDir      string `json:"output_dir"`
+	FilenameFormat string `json:"filename_format"`
+	TrackNumber    bool   `json:"track_number"`
+	Position       int    `json:"position"`
+}
+
+// CoverDownloadResponse represents the response from cover download
+type CoverDownloadResponse struct {
+	Success       bool   `json:"success"`
+	Message       string `json:"message"`
+	File          string `json:"file,omitempty"`
+	Error         string `json:"error,omitempty"`
+	AlreadyExists bool   `json:"already_exists,omitempty"`
+}
+
+// CoverClient handles cover art downloading
+type CoverClient struct {
+	httpClient *http.Client
+}
+
+// NewCoverClient creates a new cover client
+func NewCoverClient() *CoverClient {
+	return &CoverClient{
+		httpClient: &http.Client{Timeout: 30 * time.Second},
+	}
+}
+
+// buildCoverFilename builds the cover filename based on settings (same as track filename)
+func buildCoverFilename(trackName, artistName, filenameFormat string, includeTrackNumber bool, position int) string {
+	safeTitle := sanitizeFilename(trackName)
+	safeArtist := sanitizeFilename(artistName)
+
+	var filename string
+
+	// Build base filename based on format
+	switch filenameFormat {
+	case "artist-title":
+		filename = fmt.Sprintf("%s - %s", safeArtist, safeTitle)
+	case "title":
+		filename = safeTitle
+	default: // "title-artist"
+		filename = fmt.Sprintf("%s - %s", safeTitle, safeArtist)
+	}
+
+	// Add track number prefix if enabled
+	if includeTrackNumber && position > 0 {
+		filename = fmt.Sprintf("%02d. %s", position, filename)
+	}
+
+	return filename + ".jpg"
+}
+
+// getMaxResolutionURL converts a Spotify cover URL to max resolution
+// Falls back to original URL if max resolution is not available
+func (c *CoverClient) getMaxResolutionURL(coverURL string) string {
+	// Try to convert to max resolution
+	if strings.Contains(coverURL, spotifySize640) {
+		maxURL := strings.Replace(coverURL, spotifySize640, spotifySizeMax, 1)
+		// Check if max resolution URL is available
+		resp, err := c.httpClient.Head(maxURL)
+		if err == nil && resp.StatusCode == http.StatusOK {
+			return maxURL
+		}
+	}
+	// Return original URL as fallback
+	return coverURL
+}
+
+// DownloadCover downloads cover art for a single track
+func (c *CoverClient) DownloadCover(req CoverDownloadRequest) (*CoverDownloadResponse, error) {
+	if req.CoverURL == "" {
+		return &CoverDownloadResponse{
+			Success: false,
+			Error:   "Cover URL is required",
+		}, fmt.Errorf("cover URL is required")
+	}
+
+	// Create output directory if it doesn't exist
+	outputDir := req.OutputDir
+	if outputDir == "" {
+		outputDir = GetDefaultMusicPath()
+	}
+
+	if err := os.MkdirAll(outputDir, 0755); err != nil {
+		return &CoverDownloadResponse{
+			Success: false,
+			Error:   fmt.Sprintf("failed to create output directory: %v", err),
+		}, err
+	}
+
+	// Generate filename using same format as track
+	filenameFormat := req.FilenameFormat
+	if filenameFormat == "" {
+		filenameFormat = "title-artist" // default
+	}
+	filename := buildCoverFilename(req.TrackName, req.ArtistName, filenameFormat, req.TrackNumber, req.Position)
+	filePath := filepath.Join(outputDir, filename)
+
+	// Check if file already exists
+	if fileInfo, err := os.Stat(filePath); err == nil && fileInfo.Size() > 0 {
+		return &CoverDownloadResponse{
+			Success:       true,
+			Message:       "Cover file already exists",
+			File:          filePath,
+			AlreadyExists: true,
+		}, nil
+	}
+
+	// Try to get max resolution URL, fallback to original
+	downloadURL := c.getMaxResolutionURL(req.CoverURL)
+
+	// Download cover image
+	resp, err := c.httpClient.Get(downloadURL)
+	if err != nil {
+		return &CoverDownloadResponse{
+			Success: false,
+			Error:   fmt.Sprintf("failed to download cover: %v", err),
+		}, err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return &CoverDownloadResponse{
+			Success: false,
+			Error:   fmt.Sprintf("failed to download cover: HTTP %d", resp.StatusCode),
+		}, fmt.Errorf("HTTP %d", resp.StatusCode)
+	}
+
+	// Create file
+	file, err := os.Create(filePath)
+	if err != nil {
+		return &CoverDownloadResponse{
+			Success: false,
+			Error:   fmt.Sprintf("failed to create file: %v", err),
+		}, err
+	}
+	defer file.Close()
+
+	// Write content to file
+	_, err = io.Copy(file, resp.Body)
+	if err != nil {
+		return &CoverDownloadResponse{
+			Success: false,
+			Error:   fmt.Sprintf("failed to write cover file: %v", err),
+		}, err
+	}
+
+	return &CoverDownloadResponse{
+		Success: true,
+		Message: "Cover downloaded successfully",
+		File:    filePath,
+	}, nil
+}

backend/folder.go

@@ -48,3 +48,31 @@ func SelectFolderDialog(ctx context.Context, defaultPath string) (string, error)
 
 	return selectedPath, nil
 }
+
+func SelectFileDialog(ctx context.Context) (string, error) {
+	options := wailsRuntime.OpenDialogOptions{
+		Title: "Select FLAC File for Analysis",
+		Filters: []wailsRuntime.FileFilter{
+			{
+				DisplayName: "FLAC Audio Files (*.flac)",
+				Pattern:     "*.flac",
+			},
+			{
+				DisplayName: "All Files (*.*)",
+				Pattern:     "*.*",
+			},
+		},
+	}
+
+	selectedFile, err := wailsRuntime.OpenFileDialog(ctx, options)
+	if err != nil {
+		return "", err
+	}
+
+	// If user cancelled, selectedFile will be empty
+	if selectedFile == "" {
+		return "", nil
+	}
+
+	return selectedFile, nil
+}

backend/lyrics.go

@@ -0,0 +1,218 @@
+package backend
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+)
+
+// LyricsLine represents a single line of lyrics
+type LyricsLine struct {
+	StartTimeMs string `json:"startTimeMs"`
+	Words       string `json:"words"`
+	EndTimeMs   string `json:"endTimeMs"`
+}
+
+// LyricsResponse represents the API response
+type LyricsResponse struct {
+	Error    bool         `json:"error"`
+	SyncType string       `json:"syncType"`
+	Lines    []LyricsLine `json:"lines"`
+}
+
+// LyricsDownloadRequest represents a request to download lyrics
+type LyricsDownloadRequest struct {
+	SpotifyID           string `json:"spotify_id"`
+	TrackName           string `json:"track_name"`
+	ArtistName          string `json:"artist_name"`
+	OutputDir           string `json:"output_dir"`
+	FilenameFormat      string `json:"filename_format"`
+	TrackNumber         bool   `json:"track_number"`
+	Position            int    `json:"position"`
+	UseAlbumTrackNumber bool   `json:"use_album_track_number"`
+}
+
+// LyricsDownloadResponse represents the response from lyrics download
+type LyricsDownloadResponse struct {
+	Success       bool   `json:"success"`
+	Message       string `json:"message"`
+	File          string `json:"file,omitempty"`
+	Error         string `json:"error,omitempty"`
+	AlreadyExists bool   `json:"already_exists,omitempty"`
+}
+
+// LyricsClient handles lyrics fetching
+type LyricsClient struct {
+	httpClient *http.Client
+}
+
+// NewLyricsClient creates a new lyrics client
+func NewLyricsClient() *LyricsClient {
+	return &LyricsClient{
+		httpClient: &http.Client{Timeout: 15 * time.Second},
+	}
+}
+
+// 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)
+
+	resp, err := c.httpClient.Get(url)
+	if err != nil {
+		return nil, fmt.Errorf("failed to fetch lyrics: %v", err)
+	}
+	defer resp.Body.Close()
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return nil, fmt.Errorf("failed to read 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)
+	}
+
+	if lyricsResp.Error {
+		return nil, fmt.Errorf("lyrics not found for this track")
+	}
+
+	return &lyricsResp, nil
+}
+
+// ConvertToLRC converts lyrics response to LRC format
+func (c *LyricsClient) ConvertToLRC(lyrics *LyricsResponse, trackName, artistName string) string {
+	var sb strings.Builder
+
+	// Add metadata
+	sb.WriteString(fmt.Sprintf("[ti:%s]\n", trackName))
+	sb.WriteString(fmt.Sprintf("[ar:%s]\n", artistName))
+	sb.WriteString("[by:SpotiFlac]\n")
+	sb.WriteString("\n")
+
+	// Add lyrics lines
+	for _, line := range lyrics.Lines {
+		if line.Words == "" {
+			continue
+		}
+
+		// Convert milliseconds to LRC timestamp format [mm:ss.xx]
+		timestamp := msToLRCTimestamp(line.StartTimeMs)
+		sb.WriteString(fmt.Sprintf("%s%s\n", timestamp, line.Words))
+	}
+
+	return sb.String()
+}
+
+// msToLRCTimestamp converts milliseconds string to LRC timestamp format [mm:ss.xx]
+func msToLRCTimestamp(msStr string) string {
+	var ms int64
+	fmt.Sscanf(msStr, "%d", &ms)
+
+	totalSeconds := ms / 1000
+	minutes := totalSeconds / 60
+	seconds := totalSeconds % 60
+	centiseconds := (ms % 1000) / 10
+
+	return fmt.Sprintf("[%02d:%02d.%02d]", minutes, seconds, centiseconds)
+}
+
+// buildLyricsFilename builds the lyrics filename based on settings (same as track filename)
+func buildLyricsFilename(trackName, artistName, filenameFormat string, includeTrackNumber bool, position int) string {
+	safeTitle := sanitizeFilename(trackName)
+	safeArtist := sanitizeFilename(artistName)
+
+	var filename string
+
+	// Build base filename based on format
+	switch filenameFormat {
+	case "artist-title":
+		filename = fmt.Sprintf("%s - %s", safeArtist, safeTitle)
+	case "title":
+		filename = safeTitle
+	default: // "title-artist"
+		filename = fmt.Sprintf("%s - %s", safeTitle, safeArtist)
+	}
+
+	// Add track number prefix if enabled
+	if includeTrackNumber && position > 0 {
+		filename = fmt.Sprintf("%02d. %s", position, filename)
+	}
+
+	return filename + ".lrc"
+}
+
+// DownloadLyrics downloads lyrics for a single track
+func (c *LyricsClient) DownloadLyrics(req LyricsDownloadRequest) (*LyricsDownloadResponse, error) {
+	if req.SpotifyID == "" {
+		return &LyricsDownloadResponse{
+			Success: false,
+			Error:   "Spotify ID is required",
+		}, fmt.Errorf("spotify ID is required")
+	}
+
+	// Create output directory if it doesn't exist
+	outputDir := req.OutputDir
+	if outputDir == "" {
+		outputDir = GetDefaultMusicPath()
+	}
+
+	if err := os.MkdirAll(outputDir, 0755); err != nil {
+		return &LyricsDownloadResponse{
+			Success: false,
+			Error:   fmt.Sprintf("failed to create output directory: %v", err),
+		}, err
+	}
+
+	// Generate filename using same format as track
+	filenameFormat := req.FilenameFormat
+	if filenameFormat == "" {
+		filenameFormat = "title-artist" // default
+	}
+	filename := buildLyricsFilename(req.TrackName, req.ArtistName, filenameFormat, req.TrackNumber, req.Position)
+	filePath := filepath.Join(outputDir, filename)
+
+	// Check if file already exists
+	if fileInfo, err := os.Stat(filePath); err == nil && fileInfo.Size() > 0 {
+		return &LyricsDownloadResponse{
+			Success:       true,
+			Message:       "Lyrics file already exists",
+			File:          filePath,
+			AlreadyExists: true,
+		}, nil
+	}
+
+	// Fetch lyrics
+	lyrics, err := c.FetchLyrics(req.SpotifyID)
+	if err != nil {
+		return &LyricsDownloadResponse{
+			Success: false,
+			Error:   err.Error(),
+		}, err
+	}
+
+	// Convert to LRC format
+	lrcContent := c.ConvertToLRC(lyrics, req.TrackName, req.ArtistName)
+
+	// Write LRC file
+	if err := os.WriteFile(filePath, []byte(lrcContent), 0644); err != nil {
+		return &LyricsDownloadResponse{
+			Success: false,
+			Error:   fmt.Sprintf("failed to write LRC file: %v", err),
+		}, err
+	}
+
+	return &LyricsDownloadResponse{
+		Success: true,
+		Message: "Lyrics downloaded successfully",
+		File:    filePath,
+	}, nil
+}

backend/metadata.go

@@ -168,9 +168,14 @@ func CheckISRCExists(outputDir string, targetISRC string) (string, bool) {
 
 		filepath := fmt.Sprintf("%s/%s", outputDir, filename)
 
-		// Read ISRC from file
+		// Read ISRC from file (this will fail for corrupted files)
 		isrc, err := ReadISRCFromFile(filepath)
 		if err != nil {
+			// File is corrupted or unreadable, delete it
+			fmt.Printf("Removing corrupted/unreadable file: %s (error: %v)\n", filepath, err)
+			if removeErr := os.Remove(filepath); removeErr != nil {
+				fmt.Printf("Warning: Failed to remove corrupted file %s: %v\n", filepath, removeErr)
+			}
 			continue
 		}
 

backend/progress.go

@@ -7,6 +7,34 @@ import (
 	"time"
 )
 
+// DownloadStatus represents the status of a download item
+type DownloadStatus string
+
+const (
+	StatusQueued      DownloadStatus = "queued"
+	StatusDownloading DownloadStatus = "downloading"
+	StatusCompleted   DownloadStatus = "completed"
+	StatusFailed      DownloadStatus = "failed"
+	StatusSkipped     DownloadStatus = "skipped"
+)
+
+// DownloadItem represents a single item in the download queue
+type DownloadItem struct {
+	ID           string         `json:"id"`
+	TrackName    string         `json:"track_name"`
+	ArtistName   string         `json:"artist_name"`
+	AlbumName    string         `json:"album_name"`
+	ISRC         string         `json:"isrc"`
+	Status       DownloadStatus `json:"status"`
+	Progress     float64        `json:"progress"`      // MB downloaded
+	TotalSize    float64        `json:"total_size"`    // MB total (if known)
+	Speed        float64        `json:"speed"`         // MB/s
+	StartTime    int64          `json:"start_time"`    // Unix timestamp
+	EndTime      int64          `json:"end_time"`      // Unix timestamp
+	ErrorMessage string         `json:"error_message"` // If failed
+	FilePath     string         `json:"file_path"`     // Final file path
+}
+
 // Global progress tracker
 var (
 	currentProgress     float64
@@ -15,6 +43,16 @@ var (
 	downloadingLock     sync.RWMutex
 	currentSpeed        float64
 	speedLock           sync.RWMutex
+
+	// Download queue tracking
+	downloadQueue       []DownloadItem
+	downloadQueueLock   sync.RWMutex
+	currentItemID       string
+	currentItemLock     sync.RWMutex
+	totalDownloaded     float64
+	totalDownloadedLock sync.RWMutex
+	sessionStartTime    int64
+	sessionStartLock    sync.RWMutex
 )
 
 // ProgressInfo represents download progress information
@@ -24,6 +62,19 @@ type ProgressInfo struct {
 	SpeedMBps     float64 `json:"speed_mbps"`
 }
 
+// DownloadQueueInfo represents the complete download queue state
+type DownloadQueueInfo struct {
+	IsDownloading    bool           `json:"is_downloading"`
+	Queue            []DownloadItem `json:"queue"`
+	CurrentSpeed     float64        `json:"current_speed"`      // MB/s
+	TotalDownloaded  float64        `json:"total_downloaded"`   // MB this session
+	SessionStartTime int64          `json:"session_start_time"` // Unix timestamp
+	QueuedCount      int            `json:"queued_count"`
+	CompletedCount   int            `json:"completed_count"`
+	FailedCount      int            `json:"failed_count"`
+	SkippedCount     int            `json:"skipped_count"`
+}
+
 // GetDownloadProgress returns current download progress
 func GetDownloadProgress() ProgressInfo {
 	downloadingLock.RLock()
@@ -80,6 +131,7 @@ type ProgressWriter struct {
 	startTime   int64
 	lastTime    int64
 	lastBytes   int64
+	itemID      string // Track which download item this belongs to
 }
 
 func NewProgressWriter(writer io.Writer) *ProgressWriter {
@@ -91,9 +143,17 @@ func NewProgressWriter(writer io.Writer) *ProgressWriter {
 		startTime:   now,
 		lastTime:    now,
 		lastBytes:   0,
+		itemID:      "",
 	}
 }
 
+// NewProgressWriterWithID creates a progress writer with an item ID for queue tracking
+func NewProgressWriterWithID(writer io.Writer, itemID string) *ProgressWriter {
+	pw := NewProgressWriter(writer)
+	pw.itemID = itemID
+	return pw
+}
+
 func getCurrentTimeMillis() int64 {
 	return time.Now().UnixMilli()
 }
@@ -111,8 +171,9 @@ func (pw *ProgressWriter) Write(p []byte) (int, error) {
 		timeDiff := float64(now-pw.lastTime) / 1000.0 // seconds
 		bytesDiff := float64(pw.total - pw.lastBytes)
 
+		var speedMBps float64
 		if timeDiff > 0 {
-			speedMBps := (bytesDiff / (1024 * 1024)) / timeDiff
+			speedMBps = (bytesDiff / (1024 * 1024)) / timeDiff
 			SetDownloadSpeed(speedMBps)
 			fmt.Printf("\rDownloaded: %.2f MB (%.2f MB/s)", mbDownloaded, speedMBps)
 		} else {
@@ -122,6 +183,11 @@ func (pw *ProgressWriter) Write(p []byte) (int, error) {
 		// Update global progress
 		SetDownloadProgress(mbDownloaded)
 
+		// Update individual item progress if we have an item ID
+		if pw.itemID != "" {
+			UpdateItemProgress(pw.itemID, mbDownloaded, speedMBps)
+		}
+
 		pw.lastPrinted = pw.total
 		pw.lastTime = now
 		pw.lastBytes = pw.total
@@ -133,3 +199,254 @@ func (pw *ProgressWriter) Write(p []byte) (int, error) {
 func (pw *ProgressWriter) GetTotal() int64 {
 	return pw.total
 }
+
+// Queue management functions
+
+// AddToQueue adds a new item to the download queue
+func AddToQueue(id, trackName, artistName, albumName, isrc string) {
+	downloadQueueLock.Lock()
+	defer downloadQueueLock.Unlock()
+
+	item := DownloadItem{
+		ID:         id,
+		TrackName:  trackName,
+		ArtistName: artistName,
+		AlbumName:  albumName,
+		ISRC:       isrc,
+		Status:     StatusQueued,
+		Progress:   0,
+		TotalSize:  0,
+		Speed:      0,
+		StartTime:  0,
+		EndTime:    0,
+	}
+
+	downloadQueue = append(downloadQueue, item)
+
+	// Initialize session start time if this is the first item
+	sessionStartLock.Lock()
+	if sessionStartTime == 0 {
+		sessionStartTime = time.Now().Unix()
+	}
+	sessionStartLock.Unlock()
+}
+
+// StartDownloadItem marks an item as currently downloading
+func StartDownloadItem(id string) {
+	downloadQueueLock.Lock()
+	defer downloadQueueLock.Unlock()
+
+	for i := range downloadQueue {
+		if downloadQueue[i].ID == id {
+			downloadQueue[i].Status = StatusDownloading
+			downloadQueue[i].StartTime = time.Now().Unix()
+			downloadQueue[i].Progress = 0
+			break
+		}
+	}
+
+	currentItemLock.Lock()
+	currentItemID = id
+	currentItemLock.Unlock()
+}
+
+// UpdateItemProgress updates the progress of the current download item
+func UpdateItemProgress(id string, progress, speed float64) {
+	downloadQueueLock.Lock()
+	defer downloadQueueLock.Unlock()
+
+	for i := range downloadQueue {
+		if downloadQueue[i].ID == id {
+			downloadQueue[i].Progress = progress
+			downloadQueue[i].Speed = speed
+			break
+		}
+	}
+}
+
+// CompleteDownloadItem marks an item as completed
+func CompleteDownloadItem(id, filePath string, finalSize float64) {
+	downloadQueueLock.Lock()
+	defer downloadQueueLock.Unlock()
+
+	for i := range downloadQueue {
+		if downloadQueue[i].ID == id {
+			downloadQueue[i].Status = StatusCompleted
+			downloadQueue[i].EndTime = time.Now().Unix()
+			downloadQueue[i].FilePath = filePath
+			downloadQueue[i].Progress = finalSize
+			downloadQueue[i].TotalSize = finalSize
+
+			// Add to total downloaded
+			totalDownloadedLock.Lock()
+			totalDownloaded += finalSize
+			totalDownloadedLock.Unlock()
+			break
+		}
+	}
+}
+
+// FailDownloadItem marks an item as failed
+func FailDownloadItem(id, errorMsg string) {
+	downloadQueueLock.Lock()
+	defer downloadQueueLock.Unlock()
+
+	for i := range downloadQueue {
+		if downloadQueue[i].ID == id {
+			downloadQueue[i].Status = StatusFailed
+			downloadQueue[i].EndTime = time.Now().Unix()
+			downloadQueue[i].ErrorMessage = errorMsg
+			break
+		}
+	}
+}
+
+// SkipDownloadItem marks an item as skipped (already exists)
+func SkipDownloadItem(id, filePath string) {
+	downloadQueueLock.Lock()
+	defer downloadQueueLock.Unlock()
+
+	for i := range downloadQueue {
+		if downloadQueue[i].ID == id {
+			downloadQueue[i].Status = StatusSkipped
+			downloadQueue[i].EndTime = time.Now().Unix()
+			downloadQueue[i].FilePath = filePath
+			break
+		}
+	}
+}
+
+// GetDownloadQueue returns the complete download queue state
+func GetDownloadQueue() DownloadQueueInfo {
+	// Auto-reset session if all downloads are complete
+	ResetSessionIfComplete()
+
+	downloadQueueLock.RLock()
+	defer downloadQueueLock.RUnlock()
+
+	downloadingLock.RLock()
+	downloading := isDownloading
+	downloadingLock.RUnlock()
+
+	speedLock.RLock()
+	speed := currentSpeed
+	speedLock.RUnlock()
+
+	totalDownloadedLock.RLock()
+	total := totalDownloaded
+	totalDownloadedLock.RUnlock()
+
+	sessionStartLock.RLock()
+	sessionStart := sessionStartTime
+	sessionStartLock.RUnlock()
+
+	// Count statuses
+	var queued, completed, failed, skipped int
+	for _, item := range downloadQueue {
+		switch item.Status {
+		case StatusQueued:
+			queued++
+		case StatusCompleted:
+			completed++
+		case StatusFailed:
+			failed++
+		case StatusSkipped:
+			skipped++
+		}
+	}
+
+	// Create a copy of the queue
+	queueCopy := make([]DownloadItem, len(downloadQueue))
+	copy(queueCopy, downloadQueue)
+
+	return DownloadQueueInfo{
+		IsDownloading:    downloading,
+		Queue:            queueCopy,
+		CurrentSpeed:     speed,
+		TotalDownloaded:  total,
+		SessionStartTime: sessionStart,
+		QueuedCount:      queued,
+		CompletedCount:   completed,
+		FailedCount:      failed,
+		SkippedCount:     skipped,
+	}
+}
+
+// ClearDownloadQueue clears all completed, failed, and skipped items from the queue
+func ClearDownloadQueue() {
+	downloadQueueLock.Lock()
+	defer downloadQueueLock.Unlock()
+
+	// Keep only queued and downloading items
+	newQueue := make([]DownloadItem, 0)
+	for _, item := range downloadQueue {
+		if item.Status == StatusQueued || item.Status == StatusDownloading {
+			newQueue = append(newQueue, item)
+		}
+	}
+	downloadQueue = newQueue
+}
+
+// ClearAllDownloads clears the entire queue and resets session stats
+func ClearAllDownloads() {
+	downloadQueueLock.Lock()
+	downloadQueue = []DownloadItem{}
+	downloadQueueLock.Unlock()
+
+	totalDownloadedLock.Lock()
+	totalDownloaded = 0
+	totalDownloadedLock.Unlock()
+
+	sessionStartLock.Lock()
+	sessionStartTime = 0
+	sessionStartLock.Unlock()
+
+	currentItemLock.Lock()
+	currentItemID = ""
+	currentItemLock.Unlock()
+
+	// Reset current progress and speed
+	SetDownloadProgress(0)
+	SetDownloadSpeed(0)
+}
+
+// CancelAllQueuedItems marks all queued items as skipped (cancelled)
+// This is called when user stops a download or when batch download completes
+func CancelAllQueuedItems() {
+	downloadQueueLock.Lock()
+	defer downloadQueueLock.Unlock()
+
+	for i := range downloadQueue {
+		if downloadQueue[i].Status == StatusQueued {
+			downloadQueue[i].Status = StatusSkipped
+			downloadQueue[i].EndTime = time.Now().Unix()
+			downloadQueue[i].ErrorMessage = "Cancelled"
+		}
+	}
+}
+
+// ResetSessionIfComplete resets session stats if no active or queued downloads
+// Note: Does NOT clear the queue - items remain visible for history
+func ResetSessionIfComplete() {
+	downloadQueueLock.RLock()
+	hasActiveOrQueued := false
+	for _, item := range downloadQueue {
+		if item.Status == StatusQueued || item.Status == StatusDownloading {
+			hasActiveOrQueued = true
+			break
+		}
+	}
+	downloadQueueLock.RUnlock()
+
+	// If no active or queued items, reset session stats
+	// But keep the queue items for history visibility
+	if !hasActiveOrQueued {
+		sessionStartLock.Lock()
+		sessionStartTime = 0
+		sessionStartLock.Unlock()
+
+		totalDownloadedLock.Lock()
+		totalDownloaded = 0
+		totalDownloadedLock.Unlock()
+	}
+}

backend/romaji.go

@@ -0,0 +1,222 @@
+package backend
+
+import (
+	"strings"
+	"unicode"
+)
+
+// Hiragana to Romaji mapping
+var hiraganaToRomaji = map[rune]string{
+	'あ': "a", 'い': "i", 'う': "u", 'え': "e", 'お': "o",
+	'か': "ka", 'き': "ki", 'く': "ku", 'け': "ke", 'こ': "ko",
+	'さ': "sa", 'し': "shi", 'す': "su", 'せ': "se", 'そ': "so",
+	'た': "ta", 'ち': "chi", 'つ': "tsu", 'て': "te", 'と': "to",
+	'な': "na", 'に': "ni", 'ぬ': "nu", 'ね': "ne", 'の': "no",
+	'は': "ha", 'ひ': "hi", 'ふ': "fu", 'へ': "he", 'ほ': "ho",
+	'ま': "ma", 'み': "mi", 'む': "mu", 'め': "me", 'も': "mo",
+	'や': "ya", 'ゆ': "yu", 'よ': "yo",
+	'ら': "ra", 'り': "ri", 'る': "ru", 'れ': "re", 'ろ': "ro",
+	'わ': "wa", 'を': "wo", 'ん': "n",
+	// Dakuten (voiced)
+	'が': "ga", 'ぎ': "gi", 'ぐ': "gu", 'げ': "ge", 'ご': "go",
+	'ざ': "za", 'じ': "ji", 'ず': "zu", 'ぜ': "ze", 'ぞ': "zo",
+	'だ': "da", 'ぢ': "ji", 'づ': "zu", 'で': "de", 'ど': "do",
+	'ば': "ba", 'び': "bi", 'ぶ': "bu", 'べ': "be", 'ぼ': "bo",
+	// Handakuten (semi-voiced)
+	'ぱ': "pa", 'ぴ': "pi", 'ぷ': "pu", 'ぺ': "pe", 'ぽ': "po",
+	// Small characters
+	'ゃ': "ya", 'ゅ': "yu", 'ょ': "yo",
+	'っ': "", // Double consonant marker
+	'ぁ': "a", 'ぃ': "i", 'ぅ': "u", 'ぇ': "e", 'ぉ': "o",
+}
+
+// Katakana to Romaji mapping
+var katakanaToRomaji = map[rune]string{
+	'ア': "a", 'イ': "i", 'ウ': "u", 'エ': "e", 'オ': "o",
+	'カ': "ka", 'キ': "ki", 'ク': "ku", 'ケ': "ke", 'コ': "ko",
+	'サ': "sa", 'シ': "shi", 'ス': "su", 'セ': "se", 'ソ': "so",
+	'タ': "ta", 'チ': "chi", 'ツ': "tsu", 'テ': "te", 'ト': "to",
+	'ナ': "na", 'ニ': "ni", 'ヌ': "nu", 'ネ': "ne", 'ノ': "no",
+	'ハ': "ha", 'ヒ': "hi", 'フ': "fu", 'ヘ': "he", 'ホ': "ho",
+	'マ': "ma", 'ミ': "mi", 'ム': "mu", 'メ': "me", 'モ': "mo",
+	'ヤ': "ya", 'ユ': "yu", 'ヨ': "yo",
+	'ラ': "ra", 'リ': "ri", 'ル': "ru", 'レ': "re", 'ロ': "ro",
+	'ワ': "wa", 'ヲ': "wo", 'ン': "n",
+	// Dakuten (voiced)
+	'ガ': "ga", 'ギ': "gi", 'グ': "gu", 'ゲ': "ge", 'ゴ': "go",
+	'ザ': "za", 'ジ': "ji", 'ズ': "zu", 'ゼ': "ze", 'ゾ': "zo",
+	'ダ': "da", 'ヂ': "ji", 'ヅ': "zu", 'デ': "de", 'ド': "do",
+	'バ': "ba", 'ビ': "bi", 'ブ': "bu", 'ベ': "be", 'ボ': "bo",
+	// Handakuten (semi-voiced)
+	'パ': "pa", 'ピ': "pi", 'プ': "pu", 'ペ': "pe", 'ポ': "po",
+	// Small characters
+	'ャ': "ya", 'ュ': "yu", 'ョ': "yo",
+	'ッ': "", // Double consonant marker
+	'ァ': "a", 'ィ': "i", 'ゥ': "u", 'ェ': "e", 'ォ': "o",
+	// Extended katakana
+	'ー': "", // Long vowel mark
+	'ヴ': "vu",
+}
+
+// Combination mappings for きゃ, しゃ, etc.
+var combinationHiragana = map[string]string{
+	"きゃ": "kya", "きゅ": "kyu", "きょ": "kyo",
+	"しゃ": "sha", "しゅ": "shu", "しょ": "sho",
+	"ちゃ": "cha", "ちゅ": "chu", "ちょ": "cho",
+	"にゃ": "nya", "にゅ": "nyu", "にょ": "nyo",
+	"ひゃ": "hya", "ひゅ": "hyu", "ひょ": "hyo",
+	"みゃ": "mya", "みゅ": "myu", "みょ": "myo",
+	"りゃ": "rya", "りゅ": "ryu", "りょ": "ryo",
+	"ぎゃ": "gya", "ぎゅ": "gyu", "ぎょ": "gyo",
+	"じゃ": "ja", "じゅ": "ju", "じょ": "jo",
+	"びゃ": "bya", "びゅ": "byu", "びょ": "byo",
+	"ぴゃ": "pya", "ぴゅ": "pyu", "ぴょ": "pyo",
+}
+
+var combinationKatakana = map[string]string{
+	"キャ": "kya", "キュ": "kyu", "キョ": "kyo",
+	"シャ": "sha", "シュ": "shu", "ショ": "sho",
+	"チャ": "cha", "チュ": "chu", "チョ": "cho",
+	"ニャ": "nya", "ニュ": "nyu", "ニョ": "nyo",
+	"ヒャ": "hya", "ヒュ": "hyu", "ヒョ": "hyo",
+	"ミャ": "mya", "ミュ": "myu", "ミョ": "myo",
+	"リャ": "rya", "リュ": "ryu", "リョ": "ryo",
+	"ギャ": "gya", "ギュ": "gyu", "ギョ": "gyo",
+	"ジャ": "ja", "ジュ": "ju", "ジョ": "jo",
+	"ビャ": "bya", "ビュ": "byu", "ビョ": "byo",
+	"ピャ": "pya", "ピュ": "pyu", "ピョ": "pyo",
+	// Extended combinations
+	"ティ": "ti", "ディ": "di", "トゥ": "tu", "ドゥ": "du",
+	"ファ": "fa", "フィ": "fi", "フェ": "fe", "フォ": "fo",
+	"ウィ": "wi", "ウェ": "we", "ウォ": "wo",
+}
+
+// ContainsJapanese checks if a string contains Japanese characters
+func ContainsJapanese(s string) bool {
+	for _, r := range s {
+		if isHiragana(r) || isKatakana(r) || isKanji(r) {
+			return true
+		}
+	}
+	return false
+}
+
+func isHiragana(r rune) bool {
+	return r >= 0x3040 && r <= 0x309F
+}
+
+func isKatakana(r rune) bool {
+	return r >= 0x30A0 && r <= 0x30FF
+}
+
+func isKanji(r rune) bool {
+	return (r >= 0x4E00 && r <= 0x9FFF) || // CJK Unified Ideographs
+		(r >= 0x3400 && r <= 0x4DBF) // CJK Unified Ideographs Extension A
+}
+
+// JapaneseToRomaji converts Japanese text (hiragana/katakana) to romaji
+// Note: Kanji cannot be converted without a dictionary, so they are kept as-is
+func JapaneseToRomaji(text string) string {
+	if !ContainsJapanese(text) {
+		return text
+	}
+
+	var result strings.Builder
+	runes := []rune(text)
+	i := 0
+
+	for i < len(runes) {
+		// Check for っ/ッ (double consonant)
+		if i < len(runes)-1 && (runes[i] == 'っ' || runes[i] == 'ッ') {
+			nextRomaji := ""
+			if romaji, ok := hiraganaToRomaji[runes[i+1]]; ok {
+				nextRomaji = romaji
+			} else if romaji, ok := katakanaToRomaji[runes[i+1]]; ok {
+				nextRomaji = romaji
+			}
+			if len(nextRomaji) > 0 {
+				result.WriteByte(nextRomaji[0]) // Double the first consonant
+			}
+			i++
+			continue
+		}
+
+		// Check for two-character combinations
+		if i < len(runes)-1 {
+			combo := string(runes[i : i+2])
+			if romaji, ok := combinationHiragana[combo]; ok {
+				result.WriteString(romaji)
+				i += 2
+				continue
+			}
+			if romaji, ok := combinationKatakana[combo]; ok {
+				result.WriteString(romaji)
+				i += 2
+				continue
+			}
+		}
+
+		// Single character conversion
+		r := runes[i]
+		if romaji, ok := hiraganaToRomaji[r]; ok {
+			result.WriteString(romaji)
+		} else if romaji, ok := katakanaToRomaji[r]; ok {
+			result.WriteString(romaji)
+		} else if isKanji(r) {
+			// Keep kanji as-is (would need dictionary for proper conversion)
+			result.WriteRune(r)
+		} else {
+			// Keep other characters (punctuation, spaces, etc.)
+			result.WriteRune(r)
+		}
+		i++
+	}
+
+	return result.String()
+}
+
+// BuildSearchQuery creates a search query from track name and artist
+// Converts Japanese to romaji if present
+func BuildSearchQuery(trackName, artistName string) string {
+	// Convert Japanese to romaji
+	trackRomaji := JapaneseToRomaji(trackName)
+	artistRomaji := JapaneseToRomaji(artistName)
+
+	// Clean up the query - remove special characters that might interfere with search
+	trackClean := cleanSearchQuery(trackRomaji)
+	artistClean := cleanSearchQuery(artistRomaji)
+
+	return strings.TrimSpace(artistClean + " " + trackClean)
+}
+
+// cleanSearchQuery removes special characters that might interfere with search
+func cleanSearchQuery(s string) string {
+	var result strings.Builder
+	for _, r := range s {
+		if unicode.IsLetter(r) || unicode.IsNumber(r) || unicode.IsSpace(r) {
+			result.WriteRune(r)
+		} else if r == '-' || r == '\'' {
+			result.WriteRune(r)
+		}
+	}
+	return strings.TrimSpace(result.String())
+}
+
+// cleanToASCII removes all non-ASCII characters and keeps only letters, numbers, spaces
+// This is useful for creating search queries that work better with Tidal's search
+func cleanToASCII(s string) string {
+	var result strings.Builder
+	for _, r := range s {
+		// Keep only ASCII letters, numbers, spaces, and basic punctuation
+		if (r >= 'a' && r <= 'z') || (r >= 'A' && r <= 'Z') ||
+			(r >= '0' && r <= '9') || r == ' ' || r == '-' || r == '\'' {
+			result.WriteRune(r)
+		} else if r == ',' || r == '.' {
+			// Convert punctuation to space
+			result.WriteRune(' ')
+		}
+	}
+	// Clean up multiple spaces
+	cleaned := strings.Join(strings.Fields(result.String()), " ")
+	return strings.TrimSpace(cleaned)
+}

backend/songlink.go

@@ -22,6 +22,19 @@ type SongLinkURLs struct {
 	AmazonURL string `json:"amazon_url"`
 }
 
+// TrackAvailability represents the availability of a track on different platforms
+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"`
+}
+
 func NewSongLinkClient() *SongLinkClient {
 	return &SongLinkClient{
 		client: &http.Client{
@@ -148,3 +161,152 @@ func (s *SongLinkClient) GetAllURLsFromSpotify(spotifyTrackID string) (*SongLink
 
 	return urls, nil
 }
+
+// CheckTrackAvailability checks the availability of a track on different platforms
+func (s *SongLinkClient) CheckTrackAvailability(spotifyTrackID string, isrc string) (*TrackAvailability, error) {
+	// Rate limiting: max 10 requests per minute (song.link API limit)
+	now := time.Now()
+	if now.Sub(s.apiCallResetTime) >= time.Minute {
+		s.apiCallCount = 0
+		s.apiCallResetTime = now
+	}
+
+	// If we've hit the limit, wait until the next minute
+	if s.apiCallCount >= 9 {
+		waitTime := time.Minute - now.Sub(s.apiCallResetTime)
+		if waitTime > 0 {
+			fmt.Printf("Rate limit reached, waiting %v...\n", waitTime.Round(time.Second))
+			time.Sleep(waitTime)
+			s.apiCallCount = 0
+			s.apiCallResetTime = time.Now()
+		}
+	}
+
+	// Add delay between requests (7 seconds to be safe)
+	if !s.lastAPICallTime.IsZero() {
+		timeSinceLastCall := now.Sub(s.lastAPICallTime)
+		minDelay := 7 * time.Second
+		if timeSinceLastCall < minDelay {
+			waitTime := minDelay - timeSinceLastCall
+			fmt.Printf("Rate limiting: waiting %v...\n", waitTime.Round(time.Second))
+			time.Sleep(waitTime)
+		}
+	}
+
+	// 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), url.QueryEscape(spotifyURL))
+
+	req, err := http.NewRequest("GET", apiURL, nil)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create request: %w", err)
+	}
+
+	fmt.Printf("Checking availability for track: %s\n", spotifyTrackID)
+
+	// Retry logic for rate limit errors
+	maxRetries := 3
+	var resp *http.Response
+	for i := 0; i < maxRetries; i++ {
+		resp, err = s.client.Do(req)
+		if err != nil {
+			return nil, fmt.Errorf("failed to check availability: %w", err)
+		}
+
+		// Update rate limit tracking
+		s.lastAPICallTime = time.Now()
+		s.apiCallCount++
+
+		if resp.StatusCode == 429 {
+			resp.Body.Close()
+			if i < maxRetries-1 {
+				waitTime := 15 * time.Second
+				fmt.Printf("Rate limited by API, waiting %v before retry...\n", waitTime)
+				time.Sleep(waitTime)
+				continue
+			}
+			return nil, fmt.Errorf("API rate limit exceeded after %d retries", maxRetries)
+		}
+
+		if resp.StatusCode != 200 {
+			resp.Body.Close()
+			return nil, fmt.Errorf("API returned status %d", resp.StatusCode)
+		}
+
+		break
+	}
+	defer resp.Body.Close()
+
+	var songLinkResp struct {
+		LinksByPlatform map[string]struct {
+			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)
+	}
+
+	availability := &TrackAvailability{
+		SpotifyID: spotifyTrackID,
+	}
+
+	// Check Tidal
+	if tidalLink, ok := songLinkResp.LinksByPlatform["tidal"]; ok && tidalLink.URL != "" {
+		availability.Tidal = true
+		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
+		availability.AmazonURL = amazonLink.URL
+	}
+
+	// Check Qobuz using ISRC (song.link doesn't support Qobuz)
+	if isrc != "" {
+		qobuzAvailable := checkQobuzAvailability(isrc)
+		availability.Qobuz = qobuzAvailable
+	}
+
+	return availability, nil
+}
+
+// checkQobuzAvailability checks if a track is available on Qobuz using ISRC
+func checkQobuzAvailability(isrc string) bool {
+	client := &http.Client{Timeout: 10 * time.Second}
+	appID := "798273057"
+
+	// Decode base64 API URL
+	apiBase, _ := base64.StdEncoding.DecodeString("aHR0cHM6Ly93d3cucW9idXouY29tL2FwaS5qc29uLzAuMi90cmFjay9zZWFyY2g/cXVlcnk9")
+	searchURL := fmt.Sprintf("%s%s&limit=1&app_id=%s", string(apiBase), isrc, appID)
+
+	resp, err := client.Get(searchURL)
+	if err != nil {
+		return false
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != 200 {
+		return false
+	}
+
+	var searchResp struct {
+		Tracks struct {
+			Total int `json:"total"`
+		} `json:"tracks"`
+	}
+	if err := json.NewDecoder(resp.Body).Decode(&searchResp); err != nil {
+		return false
+	}
+
+	return searchResp.Tracks.Total > 0
+}

backend/spectrum.go

@@ -0,0 +1,195 @@
+package backend
+
+import (
+	"fmt"
+	"math"
+	"math/cmplx"
+
+	"github.com/mewkiz/flac"
+)
+
+// SpectrumData contains frequency spectrum information
+type SpectrumData struct {
+	TimeSlices []TimeSlice `json:"time_slices"`
+	SampleRate int         `json:"sample_rate"`
+	FreqBins   int         `json:"freq_bins"`
+	Duration   float64     `json:"duration"`
+	MaxFreq    float64     `json:"max_freq"`
+}
+
+// TimeSlice represents spectrum data at a point in time
+type TimeSlice struct {
+	Time       float64   `json:"time"`
+	Magnitudes []float64 `json:"magnitudes"`
+}
+
+// AnalyzeSpectrum decodes FLAC file and performs FFT analysis
+func AnalyzeSpectrum(filepath string) (*SpectrumData, error) {
+	// Open FLAC file
+	stream, err := flac.ParseFile(filepath)
+	if err != nil {
+		return nil, fmt.Errorf("failed to parse FLAC: %w", err)
+	}
+	defer stream.Close()
+
+	info := stream.Info
+	sampleRate := int(info.SampleRate)
+	channels := int(info.NChannels)
+
+	// Read audio samples
+	samples, err := readSamples(stream, channels)
+	if err != nil {
+		return nil, fmt.Errorf("failed to read samples: %w", err)
+	}
+
+	if len(samples) == 0 {
+		return nil, fmt.Errorf("no audio samples found")
+	}
+
+	// Calculate spectrum
+	return calculateSpectrum(samples, sampleRate), nil
+}
+
+// readSamples reads and decodes audio samples from FLAC stream
+func readSamples(stream *flac.Stream, channels int) ([]float64, error) {
+	var allSamples []float64
+	maxSamples := 10 * 1024 * 1024 // Limit to ~10 million samples to avoid memory issues
+
+	// Decode frames
+	for {
+		frame, err := stream.ParseNext()
+		if err != nil {
+			// End of stream
+			break
+		}
+
+		// Convert samples to float64 and mix channels to mono
+		for i := 0; i < frame.Subframes[0].NSamples; i++ {
+			var sample float64
+
+			// Mix all channels to mono by averaging
+			for ch := 0; ch < channels; ch++ {
+				sample += float64(frame.Subframes[ch].Samples[i])
+			}
+			sample /= float64(channels)
+
+			allSamples = append(allSamples, sample)
+
+			// Limit sample count
+			if len(allSamples) >= maxSamples {
+				return allSamples, nil
+			}
+		}
+	}
+
+	return allSamples, nil
+}
+
+// calculateSpectrum performs FFT analysis on audio samples
+func calculateSpectrum(samples []float64, sampleRate int) *SpectrumData {
+	fftSize := 8192
+	numTimeSlices := 300
+
+	duration := float64(len(samples)) / float64(sampleRate)
+
+	samplesPerSlice := len(samples) / numTimeSlices
+	if samplesPerSlice < fftSize {
+		samplesPerSlice = fftSize
+		numTimeSlices = len(samples) / fftSize
+	}
+
+	timeSlices := make([]TimeSlice, 0, numTimeSlices)
+	freqBins := fftSize / 2
+	maxFreq := float64(sampleRate) / 2.0
+
+	for i := 0; i < numTimeSlices; i++ {
+		startIdx := i * samplesPerSlice
+		if startIdx+fftSize > len(samples) {
+			break
+		}
+
+		window := samples[startIdx : startIdx+fftSize]
+
+		windowedSamples := applyHannWindow(window)
+
+		spectrum := fft(windowedSamples)
+
+		magnitudes := make([]float64, freqBins)
+		for j := 0; j < freqBins; j++ {
+			magnitude := cmplx.Abs(spectrum[j])
+
+			if magnitude < 1e-10 {
+				magnitude = 1e-10
+			}
+			magnitudes[j] = 20 * math.Log10(magnitude)
+		}
+
+		timeSlice := TimeSlice{
+			Time:       float64(startIdx) / float64(sampleRate),
+			Magnitudes: magnitudes,
+		}
+		timeSlices = append(timeSlices, timeSlice)
+	}
+
+	return &SpectrumData{
+		TimeSlices: timeSlices,
+		SampleRate: sampleRate,
+		FreqBins:   freqBins,
+		Duration:   duration,
+		MaxFreq:    maxFreq,
+	}
+}
+
+// applyHannWindow applies Hann window to reduce spectral leakage
+func applyHannWindow(samples []float64) []float64 {
+	n := len(samples)
+	windowed := make([]float64, n)
+
+	for i := 0; i < n; i++ {
+		window := 0.5 * (1.0 - math.Cos(2.0*math.Pi*float64(i)/float64(n-1)))
+		windowed[i] = samples[i] * window
+	}
+
+	return windowed
+}
+
+// fft performs Fast Fourier Transform using Cooley-Tukey algorithm
+func fft(samples []float64) []complex128 {
+	n := len(samples)
+
+	x := make([]complex128, n)
+	for i := 0; i < n; i++ {
+		x[i] = complex(samples[i], 0)
+	}
+
+	return fftRecursive(x)
+}
+
+// fftRecursive performs recursive FFT
+func fftRecursive(x []complex128) []complex128 {
+	n := len(x)
+
+	if n <= 1 {
+		return x
+	}
+
+	even := make([]complex128, n/2)
+	odd := make([]complex128, n/2)
+
+	for i := 0; i < n/2; i++ {
+		even[i] = x[2*i]
+		odd[i] = x[2*i+1]
+	}
+
+	evenFFT := fftRecursive(even)
+	oddFFT := fftRecursive(odd)
+
+	result := make([]complex128, n)
+	for k := 0; k < n/2; k++ {
+		t := cmplx.Exp(complex(0, -2*math.Pi*float64(k)/float64(n))) * oddFFT[k]
+		result[k] = evenFFT[k] + t
+		result[k+n/2] = evenFFT[k] - t
+	}
+
+	return result
+}

backend/tidal.go

@@ -22,6 +22,13 @@ type TidalDownloader struct {
 	apiURL       string
 }
 
+type TidalSearchResponse struct {
+	Limit              int          `json:"limit"`
+	Offset             int          `json:"offset"`
+	TotalNumberOfItems int          `json:"totalNumberOfItems"`
+	Items              []TidalTrack `json:"items"`
+}
+
 type TidalTrack struct {
 	ID           int64  `json:"id"`
 	Title        string `json:"title"`
@@ -65,9 +72,9 @@ func NewTidalDownloader(apiURL string) *TidalDownloader {
 	if apiURL == "" {
 		downloader := &TidalDownloader{
 			client: &http.Client{
-				Timeout: 60 * time.Second,
+				Timeout: 5 * time.Second, // Fast timeout for quick API fallback
 			},
-			timeout:      30 * time.Second,
+			timeout:      5 * time.Second,
 			maxRetries:   3,
 			clientID:     string(clientID),
 			clientSecret: string(clientSecret),
@@ -83,9 +90,9 @@ func NewTidalDownloader(apiURL string) *TidalDownloader {
 
 	return &TidalDownloader{
 		client: &http.Client{
-			Timeout: 60 * time.Second,
+			Timeout: 5 * time.Second, // Fast timeout for quick API fallback
 		},
-		timeout:      30 * time.Second,
+		timeout:      5 * time.Second,
 		maxRetries:   3,
 		clientID:     string(clientID),
 		clientSecret: string(clientSecret),
@@ -168,6 +175,237 @@ func (t *TidalDownloader) GetAccessToken() (string, error) {
 	return result.AccessToken, nil
 }
 
+// SearchTracks searches for tracks on Tidal with configurable limit
+func (t *TidalDownloader) SearchTracks(query string) (*TidalSearchResponse, error) {
+	return t.SearchTracksWithLimit(query, 50) // Default to 50 results for better matching
+}
+
+// SearchTracksWithLimit searches for tracks on Tidal with a specific limit
+func (t *TidalDownloader) SearchTracksWithLimit(query string, limit int) (*TidalSearchResponse, error) {
+	token, err := t.GetAccessToken()
+	if err != nil {
+		return nil, fmt.Errorf("failed to get access token: %w", err)
+	}
+
+	// Decode base64 API URL and encode the query parameter
+	searchBase, _ := base64.StdEncoding.DecodeString("aHR0cHM6Ly9hcGkudGlkYWwuY29tL3YxL3NlYXJjaC90cmFja3M/cXVlcnk9")
+	searchURL := fmt.Sprintf("%s%s&limit=%d&offset=0&countryCode=US", string(searchBase), url.QueryEscape(query), limit)
+
+	req, err := http.NewRequest("GET", searchURL, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	req.Header.Set("Authorization", "Bearer "+token)
+
+	resp, err := t.client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != 200 {
+		body, _ := io.ReadAll(resp.Body)
+		return nil, fmt.Errorf("search failed: HTTP %d - %s", resp.StatusCode, string(body))
+	}
+
+	var result TidalSearchResponse
+	if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
+		return nil, err
+	}
+
+	return &result, nil
+}
+
+// SearchTrackByMetadata searches for a track using artist name and track name
+// It tries multiple search strategies including romaji conversion for Japanese text
+// Now accepts ISRC for exact matching
+func (t *TidalDownloader) SearchTrackByMetadata(trackName, artistName string, expectedDuration int) (*TidalTrack, error) {
+	return t.SearchTrackByMetadataWithISRC(trackName, artistName, "", expectedDuration)
+}
+
+// SearchTrackByMetadataWithISRC searches for a track with ISRC matching priority
+func (t *TidalDownloader) SearchTrackByMetadataWithISRC(trackName, artistName, spotifyISRC string, expectedDuration int) (*TidalTrack, error) {
+	// Build search queries - multiple strategies
+	queries := []string{}
+
+	// Strategy 1: Artist + Track name (original)
+	if artistName != "" && trackName != "" {
+		queries = append(queries, artistName+" "+trackName)
+	}
+
+	// Strategy 2: Track name only (sometimes works better)
+	if trackName != "" {
+		queries = append(queries, trackName)
+	}
+
+	// Strategy 3: Romaji versions if Japanese detected
+	if ContainsJapanese(trackName) || ContainsJapanese(artistName) {
+		// Convert to romaji (hiragana/katakana only, kanji stays)
+		romajiTrack := JapaneseToRomaji(trackName)
+		romajiArtist := JapaneseToRomaji(artistName)
+
+		// Clean and remove ALL non-ASCII characters (including kanji)
+		cleanRomajiTrack := cleanToASCII(romajiTrack)
+		cleanRomajiArtist := cleanToASCII(romajiArtist)
+
+		// Artist + Track romaji (cleaned to ASCII only)
+		if cleanRomajiArtist != "" && cleanRomajiTrack != "" {
+			romajiQuery := cleanRomajiArtist + " " + cleanRomajiTrack
+			if !containsQuery(queries, romajiQuery) {
+				queries = append(queries, romajiQuery)
+				fmt.Printf("Japanese detected, adding romaji query: %s\n", romajiQuery)
+			}
+		}
+
+		// Track romaji only (cleaned)
+		if cleanRomajiTrack != "" && cleanRomajiTrack != trackName {
+			if !containsQuery(queries, cleanRomajiTrack) {
+				queries = append(queries, cleanRomajiTrack)
+			}
+		}
+
+		// Also try with partial romaji (artist + cleaned track)
+		if artistName != "" && cleanRomajiTrack != "" {
+			partialQuery := artistName + " " + cleanRomajiTrack
+			if !containsQuery(queries, partialQuery) {
+				queries = append(queries, partialQuery)
+			}
+		}
+	}
+
+	// Strategy 4: Artist only as last resort
+	if artistName != "" {
+		artistOnly := cleanToASCII(JapaneseToRomaji(artistName))
+		if artistOnly != "" && !containsQuery(queries, artistOnly) {
+			queries = append(queries, artistOnly)
+		}
+	}
+
+	// Collect all search results from all queries
+	var allTracks []TidalTrack
+	searchedQueries := make(map[string]bool)
+
+	for _, query := range queries {
+		cleanQuery := strings.TrimSpace(query)
+		if cleanQuery == "" || searchedQueries[cleanQuery] {
+			continue
+		}
+		searchedQueries[cleanQuery] = true
+
+		fmt.Printf("Searching Tidal for: %s\n", cleanQuery)
+
+		result, err := t.SearchTracksWithLimit(cleanQuery, 100) // Get more results
+		if err != nil {
+			fmt.Printf("Search error for '%s': %v\n", cleanQuery, err)
+			continue
+		}
+
+		if len(result.Items) > 0 {
+			fmt.Printf("Found %d results for '%s'\n", len(result.Items), cleanQuery)
+			allTracks = append(allTracks, result.Items...)
+		}
+	}
+
+	if len(allTracks) == 0 {
+		return nil, fmt.Errorf("no tracks found for any search query")
+	}
+
+	// Priority 1: Match by ISRC (exact match)
+	if spotifyISRC != "" {
+		fmt.Printf("Looking for ISRC match: %s\n", spotifyISRC)
+		for i := range allTracks {
+			track := &allTracks[i]
+			if track.ISRC == spotifyISRC {
+				fmt.Printf("✓ ISRC match found: %s - %s (ISRC: %s, Quality: %s)\n",
+					track.Artist.Name, track.Title, track.ISRC, track.AudioQuality)
+				return track, nil
+			}
+		}
+		fmt.Printf("No exact ISRC match found, trying other matching methods...\n")
+	}
+
+	// If ISRC was provided but no match found, return error - don't download wrong track
+	if spotifyISRC != "" {
+		fmt.Printf("✗ No ISRC match found for: %s\n", spotifyISRC)
+		fmt.Printf("  Available ISRCs from search results:\n")
+		// Show first 5 results for debugging
+		for i, track := range allTracks {
+			if i >= 5 {
+				fmt.Printf("  ... and %d more results\n", len(allTracks)-5)
+				break
+			}
+			fmt.Printf("  - %s - %s (ISRC: %s)\n", track.Artist.Name, track.Title, track.ISRC)
+		}
+		return nil, fmt.Errorf("ISRC mismatch: no track found with ISRC %s on Tidal", spotifyISRC)
+	}
+
+	// Only proceed without ISRC matching if no ISRC was provided
+	// Priority 2: Match by duration (within tolerance) + prefer best quality
+	var bestMatch *TidalTrack
+	if expectedDuration > 0 {
+		tolerance := 3 // 3 seconds tolerance
+		var durationMatches []*TidalTrack
+
+		for i := range allTracks {
+			track := &allTracks[i]
+			durationDiff := track.Duration - expectedDuration
+			if durationDiff < 0 {
+				durationDiff = -durationDiff
+			}
+			if durationDiff <= tolerance {
+				durationMatches = append(durationMatches, track)
+			}
+		}
+
+		if len(durationMatches) > 0 {
+			// Find best quality among duration matches
+			bestMatch = durationMatches[0]
+			for _, track := range durationMatches {
+				for _, tag := range track.MediaMetadata.Tags {
+					if tag == "HIRES_LOSSLESS" {
+						bestMatch = track
+						break
+					}
+				}
+			}
+			fmt.Printf("Found via duration match: %s - %s (%s)\n",
+				bestMatch.Artist.Name, bestMatch.Title, bestMatch.AudioQuality)
+			return bestMatch, nil
+		}
+	}
+
+	// Priority 3: Just take the best quality from first results (only when no ISRC provided)
+	bestMatch = &allTracks[0]
+	for i := range allTracks {
+		track := &allTracks[i]
+		for _, tag := range track.MediaMetadata.Tags {
+			if tag == "HIRES_LOSSLESS" {
+				bestMatch = track
+				break
+			}
+		}
+		if bestMatch != &allTracks[0] {
+			break // Found HIRES_LOSSLESS
+		}
+	}
+
+	fmt.Printf("Found via search (no ISRC provided): %s - %s (ISRC: %s, Quality: %s)\n",
+		bestMatch.Artist.Name, bestMatch.Title, bestMatch.ISRC, bestMatch.AudioQuality)
+
+	return bestMatch, nil
+}
+
+// containsQuery checks if a query already exists in the list
+func containsQuery(queries []string, query string) bool {
+	for _, q := range queries {
+		if q == query {
+			return true
+		}
+	}
+	return false
+}
+
 func (t *TidalDownloader) GetTidalURLFromSpotify(spotifyTrackID string) (string, error) {
 	// Decode base64 API URL
 	spotifyBase, _ := base64.StdEncoding.DecodeString("aHR0cHM6Ly9vcGVuLnNwb3RpZnkuY29tL3RyYWNrLw==")
@@ -507,72 +745,567 @@ func (t *TidalDownloader) DownloadByURLWithFallback(tidalURL, outputDir, quality
 		return "", fmt.Errorf("no APIs available for fallback: %w", err)
 	}
 
-	var lastError error
-	for i, apiURL := range apis {
-		fmt.Printf("[Tidal API %d/%d] Trying: %s\n", i+1, len(apis), apiURL)
-
-		fallbackDownloader := NewTidalDownloader(apiURL)
-
-		result, err := fallbackDownloader.DownloadByURL(tidalURL, outputDir, quality, filenameFormat, includeTrackNumber, position, spotifyTrackName, spotifyArtistName, spotifyAlbumName, useAlbumTrackNumber)
-		if err == nil {
-			fmt.Printf("✓ Success with: %s\n", apiURL)
-			return result, nil
+	if outputDir != "." {
+		if err := os.MkdirAll(outputDir, 0755); err != nil {
+			return "", fmt.Errorf("directory error: %w", err)
+		}
 	}
 
-		lastError = err
-		errMsg := err.Error()
-		if len(errMsg) > 80 {
-			errMsg = errMsg[:80]
-		}
-		fmt.Printf("✗ Failed with %s: %s\n", apiURL, errMsg)
+	fmt.Printf("Using Tidal URL: %s\n", tidalURL)
+
+	// Extract track ID from URL
+	trackID, err := t.GetTrackIDFromURL(tidalURL)
+	if err != nil {
+		return "", err
 	}
 
-	return "", fmt.Errorf("all %d Tidal APIs failed. Last error: %v", len(apis), lastError)
+	// Get track info by ID
+	trackInfo, err := t.GetTrackInfoByID(trackID)
+	if err != nil {
+		return "", err
+	}
+
+	if trackInfo.ID == 0 {
+		return "", fmt.Errorf("no track ID found")
+	}
+
+	// Use Spotify metadata if provided, otherwise fallback to Tidal metadata
+	artistName := spotifyArtistName
+	trackTitle := spotifyTrackName
+	albumTitle := spotifyAlbumName
+
+	if artistName == "" {
+		var artists []string
+		if len(trackInfo.Artists) > 0 {
+			for _, artist := range trackInfo.Artists {
+				if artist.Name != "" {
+					artists = append(artists, artist.Name)
+				}
+			}
+		} else if trackInfo.Artist.Name != "" {
+			artists = append(artists, trackInfo.Artist.Name)
+		}
+		artistName = "Unknown Artist"
+		if len(artists) > 0 {
+			artistName = strings.Join(artists, ", ")
+		}
+	}
+	artistName = sanitizeFilename(artistName)
+
+	if trackTitle == "" {
+		trackTitle = trackInfo.Title
+		if trackTitle == "" {
+			trackTitle = fmt.Sprintf("track_%d", trackInfo.ID)
+		}
+	}
+	trackTitle = sanitizeFilename(trackTitle)
+
+	if albumTitle == "" {
+		albumTitle = trackInfo.Album.Title
+	}
+
+	// Check if file with same ISRC already exists
+	if existingFile, exists := CheckISRCExists(outputDir, trackInfo.ISRC); exists {
+		fmt.Printf("File with ISRC %s already exists: %s\n", trackInfo.ISRC, existingFile)
+		return "EXISTS:" + existingFile, nil
+	}
+
+	filename := buildTidalFilename(trackTitle, artistName, trackInfo.TrackNumber, filenameFormat, includeTrackNumber, position, useAlbumTrackNumber)
+	outputFilename := filepath.Join(outputDir, filename)
+
+	if fileInfo, err := os.Stat(outputFilename); err == nil && fileInfo.Size() > 0 {
+		fmt.Printf("File already exists: %s (%.2f MB)\n", outputFilename, float64(fileInfo.Size())/(1024*1024))
+		return "EXISTS:" + outputFilename, nil
+	}
+
+	// Request download URL from ALL APIs in parallel - use first success
+	successAPI, downloadURL, err := getDownloadURLParallel(apis, trackInfo.ID, quality)
+	if err != nil {
+		return "", err
+	}
+
+	// Download the file
+	fmt.Printf("Downloading to: %s\n", outputFilename)
+	downloader := NewTidalDownloader(successAPI)
+	if err := downloader.DownloadFile(downloadURL, outputFilename); err != nil {
+		return "", err
+	}
+
+	fmt.Println("Adding metadata...")
+
+	coverPath := ""
+	if trackInfo.Album.Cover != "" {
+		coverPath = outputFilename + ".cover.jpg"
+		albumArt, err := downloader.DownloadAlbumArt(trackInfo.Album.Cover)
+		if err != nil {
+			fmt.Printf("Warning: Failed to download album art: %v\n", err)
+		} else {
+			if err := os.WriteFile(coverPath, albumArt, 0644); err != nil {
+				fmt.Printf("Warning: Failed to save album art: %v\n", err)
+			} else {
+				defer os.Remove(coverPath)
+				fmt.Println("Album art downloaded")
+			}
+		}
+	}
+
+	releaseYear := ""
+	if len(trackInfo.Album.ReleaseDate) >= 4 {
+		releaseYear = trackInfo.Album.ReleaseDate[:4]
+	}
+
+	trackNumberToEmbed := 0
+	if position > 0 {
+		if useAlbumTrackNumber && trackInfo.TrackNumber > 0 {
+			trackNumberToEmbed = trackInfo.TrackNumber
+		} else {
+			trackNumberToEmbed = position
+		}
+	}
+
+	metadata := Metadata{
+		Title:       trackTitle,
+		Artist:      artistName,
+		Album:       albumTitle,
+		Date:        releaseYear,
+		TrackNumber: trackNumberToEmbed,
+		DiscNumber:  trackInfo.VolumeNumber,
+		ISRC:        trackInfo.ISRC,
+	}
+
+	if err := EmbedMetadata(outputFilename, metadata, coverPath); err != nil {
+		fmt.Printf("Tagging failed: %v\n", err)
+	} else {
+		fmt.Println("Metadata saved")
+	}
+
+	fmt.Println("Done")
+	fmt.Println("✓ Downloaded successfully from Tidal")
+	return outputFilename, nil
 }
 
 func (t *TidalDownloader) Download(spotifyTrackID, outputDir, quality, filenameFormat string, includeTrackNumber bool, position int, spotifyTrackName, spotifyArtistName, spotifyAlbumName string, useAlbumTrackNumber bool) (string, error) {
 	// Get Tidal URL from Spotify track ID
 	tidalURL, err := t.GetTidalURLFromSpotify(spotifyTrackID)
 	if err != nil {
-		return "", err
+		// Songlink failed to find Tidal URL, try search fallback
+		fmt.Printf("Songlink couldn't find Tidal URL: %v\n", err)
+		fmt.Println("Trying Tidal search fallback...")
+		return t.DownloadBySearch(spotifyTrackName, spotifyArtistName, spotifyAlbumName, "", 0, outputDir, quality, filenameFormat, includeTrackNumber, position, useAlbumTrackNumber)
 	}
 
 	return t.DownloadByURLWithFallback(tidalURL, outputDir, quality, filenameFormat, includeTrackNumber, position, spotifyTrackName, spotifyArtistName, spotifyAlbumName, useAlbumTrackNumber)
 }
 
-func (t *TidalDownloader) DownloadWithFallback(spotifyTrackID, outputDir, quality, filenameFormat string, includeTrackNumber bool, position int, spotifyTrackName, spotifyArtistName, spotifyAlbumName string, useAlbumTrackNumber bool) (string, error) {
+// DownloadWithISRC downloads a track with ISRC matching for search fallback
+func (t *TidalDownloader) DownloadWithISRC(spotifyTrackID, spotifyISRC, outputDir, quality, filenameFormat string, includeTrackNumber bool, position int, spotifyTrackName, spotifyArtistName, spotifyAlbumName string, useAlbumTrackNumber bool, expectedDuration int) (string, error) {
+	// Get Tidal URL from Spotify track ID
+	tidalURL, err := t.GetTidalURLFromSpotify(spotifyTrackID)
+	if err != nil {
+		// Songlink failed to find Tidal URL, try search fallback with ISRC
+		fmt.Printf("Songlink couldn't find Tidal URL: %v\n", err)
+		fmt.Println("Trying Tidal search fallback with ISRC matching...")
+		return t.DownloadBySearchWithISRC(spotifyTrackName, spotifyArtistName, spotifyAlbumName, spotifyISRC, expectedDuration, outputDir, quality, filenameFormat, includeTrackNumber, position, useAlbumTrackNumber)
+	}
+
+	return t.DownloadByURLWithFallback(tidalURL, outputDir, quality, filenameFormat, includeTrackNumber, position, spotifyTrackName, spotifyArtistName, spotifyAlbumName, useAlbumTrackNumber)
+}
+
+// DownloadBySearch downloads a track by searching Tidal directly using metadata
+// This is used as a fallback when Songlink API doesn't find a Tidal URL
+func (t *TidalDownloader) DownloadBySearch(trackName, artistName, albumName, spotifyISRC string, expectedDuration int, outputDir, quality, filenameFormat string, includeTrackNumber bool, position int, useAlbumTrackNumber bool) (string, error) {
+	return t.DownloadBySearchWithISRC(trackName, artistName, albumName, spotifyISRC, expectedDuration, outputDir, quality, filenameFormat, includeTrackNumber, position, useAlbumTrackNumber)
+}
+
+// DownloadBySearchWithISRC downloads a track by searching Tidal with ISRC matching
+func (t *TidalDownloader) DownloadBySearchWithISRC(trackName, artistName, albumName, spotifyISRC string, expectedDuration int, outputDir, quality, filenameFormat string, includeTrackNumber bool, position int, useAlbumTrackNumber bool) (string, error) {
+	if outputDir != "." {
+		if err := os.MkdirAll(outputDir, 0755); err != nil {
+			return "", fmt.Errorf("directory error: %w", err)
+		}
+	}
+
+	// Search for the track with ISRC matching
+	trackInfo, err := t.SearchTrackByMetadataWithISRC(trackName, artistName, spotifyISRC, expectedDuration)
+	if err != nil {
+		return "", fmt.Errorf("search fallback failed: %w", err)
+	}
+
+	if trackInfo.ID == 0 {
+		return "", fmt.Errorf("no track ID found from search")
+	}
+
+	// Use provided metadata, fallback to Tidal metadata
+	finalArtistName := artistName
+	finalTrackTitle := trackName
+	finalAlbumTitle := albumName
+
+	if finalArtistName == "" {
+		var artists []string
+		if len(trackInfo.Artists) > 0 {
+			for _, artist := range trackInfo.Artists {
+				if artist.Name != "" {
+					artists = append(artists, artist.Name)
+				}
+			}
+		} else if trackInfo.Artist.Name != "" {
+			artists = append(artists, trackInfo.Artist.Name)
+		}
+		if len(artists) > 0 {
+			finalArtistName = strings.Join(artists, ", ")
+		} else {
+			finalArtistName = "Unknown Artist"
+		}
+	}
+	finalArtistName = sanitizeFilename(finalArtistName)
+
+	if finalTrackTitle == "" {
+		finalTrackTitle = trackInfo.Title
+		if finalTrackTitle == "" {
+			finalTrackTitle = fmt.Sprintf("track_%d", trackInfo.ID)
+		}
+	}
+	finalTrackTitle = sanitizeFilename(finalTrackTitle)
+
+	if finalAlbumTitle == "" {
+		finalAlbumTitle = trackInfo.Album.Title
+	}
+
+	// Check if file with same ISRC already exists
+	if existingFile, exists := CheckISRCExists(outputDir, trackInfo.ISRC); exists {
+		fmt.Printf("File with ISRC %s already exists: %s\n", trackInfo.ISRC, existingFile)
+		return "EXISTS:" + existingFile, nil
+	}
+
+	// Build filename
+	filename := buildTidalFilename(finalTrackTitle, finalArtistName, trackInfo.TrackNumber, filenameFormat, includeTrackNumber, position, useAlbumTrackNumber)
+	outputFilename := filepath.Join(outputDir, filename)
+
+	if fileInfo, err := os.Stat(outputFilename); err == nil && fileInfo.Size() > 0 {
+		fmt.Printf("File already exists: %s (%.2f MB)\n", outputFilename, float64(fileInfo.Size())/(1024*1024))
+		return "EXISTS:" + outputFilename, nil
+	}
+
+	// Get download URL
+	downloadURL, err := t.GetDownloadURL(trackInfo.ID, quality)
+	if err != nil {
+		return "", err
+	}
+
+	fmt.Printf("Downloading to: %s\n", outputFilename)
+	if err := t.DownloadFile(downloadURL, outputFilename); err != nil {
+		return "", err
+	}
+
+	fmt.Println("Adding metadata...")
+
+	coverPath := ""
+	if trackInfo.Album.Cover != "" {
+		coverPath = outputFilename + ".cover.jpg"
+		albumArt, err := t.DownloadAlbumArt(trackInfo.Album.Cover)
+		if err != nil {
+			fmt.Printf("Warning: Failed to download album art: %v\n", err)
+		} else {
+			if err := os.WriteFile(coverPath, albumArt, 0644); err != nil {
+				fmt.Printf("Warning: Failed to save album art: %v\n", err)
+			} else {
+				defer os.Remove(coverPath)
+				fmt.Println("Album art downloaded")
+			}
+		}
+	}
+
+	releaseYear := ""
+	if len(trackInfo.Album.ReleaseDate) >= 4 {
+		releaseYear = trackInfo.Album.ReleaseDate[:4]
+	}
+
+	trackNumberToEmbed := 0
+	if position > 0 {
+		if useAlbumTrackNumber && trackInfo.TrackNumber > 0 {
+			trackNumberToEmbed = trackInfo.TrackNumber
+		} else {
+			trackNumberToEmbed = position
+		}
+	}
+
+	metadata := Metadata{
+		Title:       finalTrackTitle,
+		Artist:      finalArtistName,
+		Album:       finalAlbumTitle,
+		Date:        releaseYear,
+		TrackNumber: trackNumberToEmbed,
+		DiscNumber:  trackInfo.VolumeNumber,
+		ISRC:        trackInfo.ISRC,
+	}
+
+	if err := EmbedMetadata(outputFilename, metadata, coverPath); err != nil {
+		fmt.Printf("Tagging failed: %v\n", err)
+	} else {
+		fmt.Println("Metadata saved")
+	}
+
+	fmt.Println("Done")
+	fmt.Println("✓ Downloaded successfully from Tidal (via search)")
+	return outputFilename, nil
+}
+
+// apiResult holds the result from a parallel API request
+type apiResult struct {
+	apiURL      string
+	downloadURL string
+	err         error
+}
+
+// getDownloadURLParallel requests download URL from all APIs in parallel
+// Returns the first successful result
+func getDownloadURLParallel(apis []string, trackID int64, quality string) (string, string, error) {
+	if len(apis) == 0 {
+		return "", "", fmt.Errorf("no APIs available")
+	}
+
+	resultChan := make(chan apiResult, len(apis))
+
+	// Start all requests in parallel with longer timeout client
+	fmt.Printf("Requesting download URL from %d APIs in parallel...\n", len(apis))
+	for _, apiURL := range apis {
+		go func(api string) {
+			// Create client with longer timeout for parallel requests
+			client := &http.Client{
+				Timeout: 15 * time.Second, // Longer timeout for parallel
+			}
+
+			url := fmt.Sprintf("%s/track/?id=%d&quality=%s", api, trackID, quality)
+			resp, err := client.Get(url)
+			if err != nil {
+				resultChan <- apiResult{apiURL: api, err: err}
+				return
+			}
+			defer resp.Body.Close()
+
+			if resp.StatusCode != 200 {
+				resultChan <- apiResult{apiURL: api, err: fmt.Errorf("HTTP %d", resp.StatusCode)}
+				return
+			}
+
+			var apiResponses []TidalAPIResponse
+			if err := json.NewDecoder(resp.Body).Decode(&apiResponses); err != nil {
+				resultChan <- apiResult{apiURL: api, err: err}
+				return
+			}
+
+			for _, item := range apiResponses {
+				if item.OriginalTrackURL != "" {
+					resultChan <- apiResult{apiURL: api, downloadURL: item.OriginalTrackURL, err: nil}
+					return
+				}
+			}
+
+			resultChan <- apiResult{apiURL: api, err: fmt.Errorf("no download URL in response")}
+		}(apiURL)
+	}
+
+	// Collect results - return first success
+	var lastError error
+	var errors []string
+
+	for i := 0; i < len(apis); i++ {
+		result := <-resultChan
+		if result.err == nil && result.downloadURL != "" {
+			// First success - use this one
+			fmt.Printf("✓ Got download URL from: %s\n", result.apiURL)
+			return result.apiURL, result.downloadURL, nil
+		} else {
+			errMsg := result.err.Error()
+			if len(errMsg) > 50 {
+				errMsg = errMsg[:50] + "..."
+			}
+			errors = append(errors, fmt.Sprintf("%s: %s", result.apiURL, errMsg))
+			lastError = result.err
+		}
+	}
+
+	// Print all errors for debugging
+	fmt.Println("All APIs failed:")
+	for _, e := range errors {
+		fmt.Printf("  ✗ %s\n", e)
+	}
+
+	return "", "", fmt.Errorf("all %d APIs failed. Last error: %v", len(apis), lastError)
+}
+
+// DownloadBySearchWithFallback tries multiple APIs when downloading via search
+// Search is done ONCE, then requests all APIs in PARALLEL for download URL
+func (t *TidalDownloader) DownloadBySearchWithFallback(trackName, artistName, albumName, spotifyISRC string, expectedDuration int, outputDir, quality, filenameFormat string, includeTrackNumber bool, position int, useAlbumTrackNumber bool) (string, error) {
 	apis, err := t.GetAvailableAPIs()
 	if err != nil {
 		return "", fmt.Errorf("no APIs available for fallback: %w", err)
 	}
 
-	// Get Tidal URL once
-	tidalURL, err := t.GetTidalURLFromSpotify(spotifyTrackID)
+	if outputDir != "." {
+		if err := os.MkdirAll(outputDir, 0755); err != nil {
+			return "", fmt.Errorf("directory error: %w", err)
+		}
+	}
+
+	// Search ONCE to find the track
+	fmt.Println("Searching for track...")
+	trackInfo, err := t.SearchTrackByMetadataWithISRC(trackName, artistName, spotifyISRC, expectedDuration)
+	if err != nil {
+		return "", fmt.Errorf("search failed: %w", err)
+	}
+
+	if trackInfo.ID == 0 {
+		return "", fmt.Errorf("no track ID found from search")
+	}
+
+	fmt.Printf("Track found: %s - %s (ID: %d)\n", trackInfo.Artist.Name, trackInfo.Title, trackInfo.ID)
+
+	// Prepare metadata
+	finalArtistName := artistName
+	finalTrackTitle := trackName
+	finalAlbumTitle := albumName
+
+	if finalArtistName == "" {
+		var artists []string
+		if len(trackInfo.Artists) > 0 {
+			for _, artist := range trackInfo.Artists {
+				if artist.Name != "" {
+					artists = append(artists, artist.Name)
+				}
+			}
+		} else if trackInfo.Artist.Name != "" {
+			artists = append(artists, trackInfo.Artist.Name)
+		}
+		if len(artists) > 0 {
+			finalArtistName = strings.Join(artists, ", ")
+		} else {
+			finalArtistName = "Unknown Artist"
+		}
+	}
+	finalArtistName = sanitizeFilename(finalArtistName)
+
+	if finalTrackTitle == "" {
+		finalTrackTitle = trackInfo.Title
+		if finalTrackTitle == "" {
+			finalTrackTitle = fmt.Sprintf("track_%d", trackInfo.ID)
+		}
+	}
+	finalTrackTitle = sanitizeFilename(finalTrackTitle)
+
+	if finalAlbumTitle == "" {
+		finalAlbumTitle = trackInfo.Album.Title
+	}
+
+	// Check if file already exists
+	if existingFile, exists := CheckISRCExists(outputDir, trackInfo.ISRC); exists {
+		fmt.Printf("File with ISRC %s already exists: %s\n", trackInfo.ISRC, existingFile)
+		return "EXISTS:" + existingFile, nil
+	}
+
+	filename := buildTidalFilename(finalTrackTitle, finalArtistName, trackInfo.TrackNumber, filenameFormat, includeTrackNumber, position, useAlbumTrackNumber)
+	outputFilename := filepath.Join(outputDir, filename)
+
+	if fileInfo, err := os.Stat(outputFilename); err == nil && fileInfo.Size() > 0 {
+		fmt.Printf("File already exists: %s (%.2f MB)\n", outputFilename, float64(fileInfo.Size())/(1024*1024))
+		return "EXISTS:" + outputFilename, nil
+	}
+
+	// Request download URL from ALL APIs in parallel - use first success
+	successAPI, downloadURL, err := getDownloadURLParallel(apis, trackInfo.ID, quality)
 	if err != nil {
 		return "", err
 	}
 
-	var lastError error
-	for i, apiURL := range apis {
-		fmt.Printf("[Auto Fallback %d/%d] Trying: %s\n", i+1, len(apis), apiURL)
-
-		fallbackDownloader := NewTidalDownloader(apiURL)
-
-		result, err := fallbackDownloader.DownloadByURL(tidalURL, outputDir, quality, filenameFormat, includeTrackNumber, position, spotifyTrackName, spotifyArtistName, spotifyAlbumName, useAlbumTrackNumber)
-		if err == nil {
-			fmt.Printf("✓ Success with: %s\n", apiURL)
-			return result, nil
+	// Download the file using the successful API
+	fmt.Printf("Downloading to: %s\n", outputFilename)
+	downloader := NewTidalDownloader(successAPI)
+	if err := downloader.DownloadFile(downloadURL, outputFilename); err != nil {
+		return "", fmt.Errorf("download failed: %w", err)
 	}
 
-		lastError = err
-		errMsg := err.Error()
-		if len(errMsg) > 80 {
-			errMsg = errMsg[:80]
+	// Success! Add metadata
+	fmt.Println("Adding metadata...")
+
+	coverPath := ""
+	if trackInfo.Album.Cover != "" {
+		coverPath = outputFilename + ".cover.jpg"
+		albumArt, err := downloader.DownloadAlbumArt(trackInfo.Album.Cover)
+		if err != nil {
+			fmt.Printf("Warning: Failed to download album art: %v\n", err)
+		} else {
+			if err := os.WriteFile(coverPath, albumArt, 0644); err != nil {
+				fmt.Printf("Warning: Failed to save album art: %v\n", err)
+			} else {
+				defer os.Remove(coverPath)
+				fmt.Println("Album art downloaded")
+			}
 		}
-		fmt.Printf("✗ Failed with %s: %s\n", apiURL, errMsg)
 	}
 
-	return "", fmt.Errorf("all %d APIs failed. Last error: %v", len(apis), lastError)
+	releaseYear := ""
+	if len(trackInfo.Album.ReleaseDate) >= 4 {
+		releaseYear = trackInfo.Album.ReleaseDate[:4]
+	}
+
+	trackNumberToEmbed := 0
+	if position > 0 {
+		if useAlbumTrackNumber && trackInfo.TrackNumber > 0 {
+			trackNumberToEmbed = trackInfo.TrackNumber
+		} else {
+			trackNumberToEmbed = position
+		}
+	}
+
+	metadata := Metadata{
+		Title:       finalTrackTitle,
+		Artist:      finalArtistName,
+		Album:       finalAlbumTitle,
+		Date:        releaseYear,
+		TrackNumber: trackNumberToEmbed,
+		DiscNumber:  trackInfo.VolumeNumber,
+		ISRC:        trackInfo.ISRC,
+	}
+
+	if err := EmbedMetadata(outputFilename, metadata, coverPath); err != nil {
+		fmt.Printf("Tagging failed: %v\n", err)
+	} else {
+		fmt.Println("Metadata saved")
+	}
+
+	fmt.Println("Done")
+	fmt.Println("✓ Downloaded successfully from Tidal (via search)")
+	return outputFilename, nil
+}
+
+func (t *TidalDownloader) DownloadWithFallback(spotifyTrackID, outputDir, quality, filenameFormat string, includeTrackNumber bool, position int, spotifyTrackName, spotifyArtistName, spotifyAlbumName string, useAlbumTrackNumber bool) (string, error) {
+	// Get Tidal URL once
+	tidalURL, err := t.GetTidalURLFromSpotify(spotifyTrackID)
+	if err != nil {
+		// Songlink failed to find Tidal URL, try search fallback with all APIs
+		fmt.Printf("Songlink couldn't find Tidal URL: %v\n", err)
+		fmt.Println("Trying Tidal search fallback with all APIs...")
+		return t.DownloadBySearchWithFallback(spotifyTrackName, spotifyArtistName, spotifyAlbumName, "", 0, outputDir, quality, filenameFormat, includeTrackNumber, position, useAlbumTrackNumber)
+	}
+
+	// Use parallel API requests via DownloadByURLWithFallback
+	return t.DownloadByURLWithFallback(tidalURL, outputDir, quality, filenameFormat, includeTrackNumber, position, spotifyTrackName, spotifyArtistName, spotifyAlbumName, useAlbumTrackNumber)
+}
+
+// DownloadWithFallbackAndISRC downloads with ISRC matching for search fallback
+// Uses parallel API requests for faster download
+func (t *TidalDownloader) DownloadWithFallbackAndISRC(spotifyTrackID, spotifyISRC, outputDir, quality, filenameFormat string, includeTrackNumber bool, position int, spotifyTrackName, spotifyArtistName, spotifyAlbumName string, useAlbumTrackNumber bool, expectedDuration int) (string, error) {
+	// Get Tidal URL once
+	tidalURL, err := t.GetTidalURLFromSpotify(spotifyTrackID)
+	if err != nil {
+		// Songlink failed to find Tidal URL, try search fallback with ISRC matching
+		fmt.Printf("Songlink couldn't find Tidal URL: %v\n", err)
+		fmt.Println("Trying Tidal search fallback with ISRC matching...")
+		return t.DownloadBySearchWithFallback(spotifyTrackName, spotifyArtistName, spotifyAlbumName, spotifyISRC, expectedDuration, outputDir, quality, filenameFormat, includeTrackNumber, position, useAlbumTrackNumber)
+	}
+
+	// Use parallel API requests via DownloadByURLWithFallback
+	return t.DownloadByURLWithFallback(tidalURL, outputDir, quality, filenameFormat, includeTrackNumber, position, spotifyTrackName, spotifyArtistName, spotifyAlbumName, useAlbumTrackNumber)
 }
 
 func buildTidalFilename(title, artist string, trackNumber int, format string, includeTrackNumber bool, position int, useAlbumTrackNumber bool) string {

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=Google+Sans+Code:ital,wght@0,300..800;1,300..800&family=Google+Sans+Flex:opsz,wght@6..144,1..1000&display=swap" rel="stylesheet">
+    <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">
     <title>SpotiFLAC</title>
   </head>
   <body>

frontend/package.json

@@ -6,6 +6,7 @@
   "scripts": {
     "dev": "vite",
     "build": "tsc -b && vite build",
+    "postinstall": "node scripts/generate-icon.js",
     "lint": "eslint .",
     "preview": "vite preview",
     "generate-icon": "node scripts/generate-icon.js"
@@ -17,14 +18,16 @@
     "@radix-ui/react-label": "^2.1.8",
     "@radix-ui/react-progress": "^1.1.8",
     "@radix-ui/react-radio-group": "^1.3.8",
+    "@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-tabs": "^1.1.13",
     "@radix-ui/react-tooltip": "^1.2.8",
     "@tailwindcss/vite": "^4.1.17",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
-    "lucide-react": "^0.554.0",
+    "lucide-react": "^0.555.0",
     "next-themes": "^0.4.6",
     "react": "^19.2.0",
     "react-dom": "^19.2.0",
@@ -35,7 +38,7 @@
   "devDependencies": {
     "@eslint/js": "^9.39.1",
     "@types/node": "^24.10.1",
-    "@types/react": "^19.2.6",
+    "@types/react": "^19.2.7",
     "@types/react-dom": "^19.2.3",
     "@vitejs/plugin-react": "^5.1.1",
     "eslint": "^9.39.1",
@@ -45,7 +48,7 @@
     "sharp": "^0.34.5",
     "tw-animate-css": "^1.4.0",
     "typescript": "~5.9.3",
-    "typescript-eslint": "^8.47.0",
-    "vite": "^7.2.4"
+    "typescript-eslint": "^8.48.0",
+    "vite": "^7.2.6"
   }
 }

frontend/package.json.md5

@@ -1 +1 @@
-72728e016fdcbb66d395ba3a681b8945
+b7a549e463d5f6a2fad25f5ce939cdd7

frontend/src/App.css

@@ -1,42 +0,0 @@
-#root {
-  max-width: 1280px;
-  margin: 0 auto;
-  padding: 2rem;
-  text-align: center;
-}
-
-.logo {
-  height: 6em;
-  padding: 1.5em;
-  will-change: filter;
-  transition: filter 300ms;
-}
-.logo:hover {
-  filter: drop-shadow(0 0 2em #646cffaa);
-}
-.logo.react:hover {
-  filter: drop-shadow(0 0 2em #61dafbaa);
-}
-
-@keyframes logo-spin {
-  from {
-    transform: rotate(0deg);
-  }
-  to {
-    transform: rotate(360deg);
-  }
-}
-
-@media (prefers-reduced-motion: no-preference) {
-  a:nth-of-type(2) .logo {
-    animation: logo-spin infinite 20s linear;
-  }
-}
-
-.card {
-  padding: 2em;
-}
-
-.read-the-docs {
-  color: #888;
-}

frontend/src/App.tsx

@@ -11,48 +11,65 @@ import { Label } from "@/components/ui/label";
 import { Input } from "@/components/ui/input";
 import { Search, X } from "lucide-react";
 import { TooltipProvider } from "@/components/ui/tooltip";
-import { getSettings, applyThemeMode } from "@/lib/settings";
+import { getSettings, applyThemeMode, applyFont } from "@/lib/settings";
 import { applyTheme } from "@/lib/themes";
 import { OpenFolder } from "../wailsjs/go/main/App";
 import { toastWithSound as toast } from "@/lib/toast-with-sound";
 
 // Components
 import { TitleBar } from "@/components/TitleBar";
+import { Sidebar, type PageType } from "@/components/Sidebar";
 import { Header } from "@/components/Header";
 import { SearchBar } from "@/components/SearchBar";
 import { TrackInfo } from "@/components/TrackInfo";
 import { AlbumInfo } from "@/components/AlbumInfo";
 import { PlaylistInfo } from "@/components/PlaylistInfo";
 import { ArtistInfo } from "@/components/ArtistInfo";
+import { DownloadQueue } from "@/components/DownloadQueue";
 import { DownloadProgressToast } from "@/components/DownloadProgressToast";
+import { AudioAnalysisPage } from "@/components/AudioAnalysisPage";
+import { SettingsPage } from "@/components/SettingsPage";
+import { DebugLoggerPage } from "@/components/DebugLoggerPage";
 import type { HistoryItem } from "@/components/FetchHistory";
 
 // Hooks
 import { useDownload } from "@/hooks/useDownload";
 import { useMetadata } from "@/hooks/useMetadata";
+import { useLyrics } from "@/hooks/useLyrics";
+import { useCover } from "@/hooks/useCover";
+import { useAvailability } from "@/hooks/useAvailability";
+import { useDownloadQueueDialog } from "@/hooks/useDownloadQueueDialog";
 
 const HISTORY_KEY = "spotiflac_fetch_history";
 const MAX_HISTORY = 5;
 
 function App() {
+  const [currentPage, setCurrentPage] = useState<PageType>("main");
   const [spotifyUrl, setSpotifyUrl] = useState("");
   const [selectedTracks, setSelectedTracks] = useState<string[]>([]);
   const [searchQuery, setSearchQuery] = useState("");
   const [sortBy, setSortBy] = useState<string>("default");
-  const [currentPage, setCurrentPage] = useState(1);
+  const [currentListPage, setCurrentListPage] = useState(1);
   const [hasUpdate, setHasUpdate] = useState(false);
+  const [releaseDate, setReleaseDate] = useState<string | null>(null);
   const [fetchHistory, setFetchHistory] = useState<HistoryItem[]>([]);
 
   const ITEMS_PER_PAGE = 50;
-  const CURRENT_VERSION = "6.2";
+  const CURRENT_VERSION = "6.6";
 
   const download = useDownload();
   const metadata = useMetadata();
+  const lyrics = useLyrics();
+  const cover = useCover();
+  const availability = useAvailability();
+  const downloadQueue = useDownloadQueueDialog();
+
 
   useEffect(() => {
     const settings = getSettings();
     applyThemeMode(settings.themeMode);
     applyTheme(settings.theme);
+    applyFont(settings.fontFamily);
 
     const mediaQuery = window.matchMedia("(prefers-color-scheme: dark)");
     const handleChange = () => {
@@ -76,8 +93,11 @@ function App() {
     setSelectedTracks([]);
     setSearchQuery("");
     download.resetDownloadedTracks();
+    lyrics.resetLyricsState();
+    cover.resetCoverState();
+    availability.clearAvailability();
     setSortBy("default");
-    setCurrentPage(1);
+    setCurrentListPage(1);
   }, [metadata.metadata]);
 
   const checkForUpdates = async () => {
@@ -86,9 +106,12 @@ function App() {
         "https://api.github.com/repos/afkarxyz/SpotiFLAC/releases/latest"
       );
       const data = await response.json();
-      // tag_name format: "v6.1" -> extract "6.1"
       const latestVersion = data.tag_name?.replace(/^v/, "") || "";
 
+      if (data.published_at) {
+        setReleaseDate(data.published_at);
+      }
+
       if (latestVersion && latestVersion > CURRENT_VERSION) {
         setHasUpdate(true);
       }
@@ -153,7 +176,6 @@ function App() {
     }
   };
 
-  // Add to history when metadata is successfully fetched
   useEffect(() => {
     if (!metadata.metadata || !spotifyUrl) return;
 
@@ -204,7 +226,7 @@ function App() {
 
   const handleSearchChange = (value: string) => {
     setSearchQuery(value);
-    setCurrentPage(1);
+    setCurrentListPage(1);
   };
 
   const toggleTrackSelection = (isrc: string) => {
@@ -237,6 +259,7 @@ function App() {
     }
   };
 
+
   const renderMetadata = () => {
     if (!metadata.metadata) return null;
 
@@ -249,7 +272,18 @@ function App() {
           downloadingTrack={download.downloadingTrack}
           isDownloaded={download.downloadedTracks.has(track.isrc)}
           isFailed={download.failedTracks.has(track.isrc)}
+          isSkipped={download.skippedTracks.has(track.isrc)}
+          downloadingLyricsTrack={lyrics.downloadingLyricsTrack}
+          downloadedLyrics={lyrics.downloadedLyrics.has(track.spotify_id || "")}
+          failedLyrics={lyrics.failedLyrics.has(track.spotify_id || "")}
+          skippedLyrics={lyrics.skippedLyrics.has(track.spotify_id || "")}
+          checkingAvailability={availability.checkingTrackId === track.spotify_id}
+          availability={availability.getAvailability(track.spotify_id || "")}
+          downloadingCover={cover.downloadingCover}
           onDownload={download.handleDownloadTrack}
+          onDownloadLyrics={lyrics.handleDownloadLyrics}
+          onCheckAvailability={availability.checkAvailability}
+          onDownloadCover={cover.handleDownloadCover}
           onOpenFolder={handleOpenFolder}
         />
       );
@@ -272,20 +306,39 @@ function App() {
           bulkDownloadType={download.bulkDownloadType}
           downloadProgress={download.downloadProgress}
           currentDownloadInfo={download.currentDownloadInfo}
-          currentPage={currentPage}
+          currentPage={currentListPage}
           itemsPerPage={ITEMS_PER_PAGE}
+          downloadedLyrics={lyrics.downloadedLyrics}
+          failedLyrics={lyrics.failedLyrics}
+          skippedLyrics={lyrics.skippedLyrics}
+          downloadingLyricsTrack={lyrics.downloadingLyricsTrack}
+          checkingAvailabilityTrack={availability.checkingTrackId}
+          availabilityMap={availability.availabilityMap}
+          downloadedCovers={cover.downloadedCovers}
+          failedCovers={cover.failedCovers}
+          skippedCovers={cover.skippedCovers}
+          downloadingCoverTrack={cover.downloadingCoverTrack}
+          isBulkDownloadingCovers={cover.isBulkDownloadingCovers}
           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)
+          }
+          onDownloadCover={(coverUrl, trackName, artistName, albumName, _folderName, _isArtistDiscography, position, trackId) =>
+            cover.handleDownloadCover(coverUrl, trackName, artistName, albumName, album_info.name, false, position, trackId)
+          }
+          onCheckAvailability={availability.checkAvailability}
+          onDownloadAllCovers={() => cover.handleDownloadAllCovers(track_list, album_info.name)}
           onDownloadAll={() => download.handleDownloadAll(track_list, album_info.name)}
           onDownloadSelected={() =>
             download.handleDownloadSelected(selectedTracks, track_list, album_info.name)
           }
           onStopDownload={download.handleStopDownload}
           onOpenFolder={handleOpenFolder}
-          onPageChange={setCurrentPage}
+          onPageChange={setCurrentListPage}
           onArtistClick={async (artist) => {
             const artistUrl = await metadata.handleArtistClick(artist);
             if (artistUrl) {
@@ -319,13 +372,32 @@ function App() {
           bulkDownloadType={download.bulkDownloadType}
           downloadProgress={download.downloadProgress}
           currentDownloadInfo={download.currentDownloadInfo}
-          currentPage={currentPage}
+          currentPage={currentListPage}
           itemsPerPage={ITEMS_PER_PAGE}
+          downloadedLyrics={lyrics.downloadedLyrics}
+          failedLyrics={lyrics.failedLyrics}
+          skippedLyrics={lyrics.skippedLyrics}
+          downloadingLyricsTrack={lyrics.downloadingLyricsTrack}
+          checkingAvailabilityTrack={availability.checkingTrackId}
+          availabilityMap={availability.availabilityMap}
+          downloadedCovers={cover.downloadedCovers}
+          failedCovers={cover.failedCovers}
+          skippedCovers={cover.skippedCovers}
+          downloadingCoverTrack={cover.downloadingCoverTrack}
+          isBulkDownloadingCovers={cover.isBulkDownloadingCovers}
           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)
+          }
+          onDownloadCover={(coverUrl, trackName, artistName, albumName, _folderName, _isArtistDiscography, position, trackId) =>
+            cover.handleDownloadCover(coverUrl, trackName, artistName, albumName, playlist_info.owner.name, false, position, trackId)
+          }
+          onCheckAvailability={availability.checkAvailability}
+          onDownloadAllCovers={() => cover.handleDownloadAllCovers(track_list, playlist_info.owner.name)}
           onDownloadAll={() => download.handleDownloadAll(track_list, playlist_info.owner.name)}
           onDownloadSelected={() =>
             download.handleDownloadSelected(
@@ -336,7 +408,7 @@ function App() {
           }
           onStopDownload={download.handleStopDownload}
           onOpenFolder={handleOpenFolder}
-          onPageChange={setCurrentPage}
+          onPageChange={setCurrentListPage}
           onAlbumClick={metadata.handleAlbumClick}
           onArtistClick={async (artist) => {
             const artistUrl = await metadata.handleArtistClick(artist);
@@ -372,13 +444,32 @@ function App() {
           bulkDownloadType={download.bulkDownloadType}
           downloadProgress={download.downloadProgress}
           currentDownloadInfo={download.currentDownloadInfo}
-          currentPage={currentPage}
+          currentPage={currentListPage}
           itemsPerPage={ITEMS_PER_PAGE}
+          downloadedLyrics={lyrics.downloadedLyrics}
+          failedLyrics={lyrics.failedLyrics}
+          skippedLyrics={lyrics.skippedLyrics}
+          downloadingLyricsTrack={lyrics.downloadingLyricsTrack}
+          checkingAvailabilityTrack={availability.checkingTrackId}
+          availabilityMap={availability.availabilityMap}
+          downloadedCovers={cover.downloadedCovers}
+          failedCovers={cover.failedCovers}
+          skippedCovers={cover.skippedCovers}
+          downloadingCoverTrack={cover.downloadingCoverTrack}
+          isBulkDownloadingCovers={cover.isBulkDownloadingCovers}
           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)
+          }
+          onDownloadCover={(coverUrl, trackName, artistName, albumName, _folderName, isArtistDiscography, position, trackId) =>
+            cover.handleDownloadCover(coverUrl, trackName, artistName, albumName, artist_info.name, isArtistDiscography, position, trackId)
+          }
+          onCheckAvailability={availability.checkAvailability}
+          onDownloadAllCovers={() => cover.handleDownloadAllCovers(track_list, artist_info.name, true)}
           onDownloadAll={() => download.handleDownloadAll(track_list, artist_info.name, true)}
           onDownloadSelected={() =>
             download.handleDownloadSelected(selectedTracks, track_list, artist_info.name, true)
@@ -392,7 +483,7 @@ function App() {
               setSpotifyUrl(artistUrl);
             }
           }}
-          onPageChange={setCurrentPage}
+          onPageChange={setCurrentListPage}
           onTrackClick={async (track) => {
             if (track.external_urls) {
               setSpotifyUrl(track.external_urls);
@@ -406,16 +497,23 @@ function App() {
     return null;
   };
 
-  return (
-    <TooltipProvider>
-      <div className="min-h-screen bg-background flex flex-col">
-        <TitleBar />
-        <div className="flex-1 p-4 md:p-8">
-          <div className="max-w-4xl mx-auto space-y-6">
-            <Header version={CURRENT_VERSION} hasUpdate={hasUpdate} />
 
-          {/* Download Progress Toast */}
-          <DownloadProgressToast />
+  const renderPage = () => {
+    switch (currentPage) {
+      case "settings":
+        return <SettingsPage />;
+      case "debug":
+        return <DebugLoggerPage />;
+      case "audio-analysis":
+        return <AudioAnalysisPage />;
+      default:
+        return (
+          <>
+            <Header
+              version={CURRENT_VERSION}
+              hasUpdate={hasUpdate}
+              releaseDate={releaseDate}
+            />
 
             {/* Timeout Dialog */}
             <Dialog
@@ -526,8 +624,32 @@ function App() {
             />
 
             {metadata.metadata && renderMetadata()}
+          </>
+        );
+    }
+  };
+
+  return (
+    <TooltipProvider>
+      <div className="min-h-screen bg-background flex flex-col">
+        <TitleBar />
+        <Sidebar currentPage={currentPage} onPageChange={setCurrentPage} />
+        
+        {/* Main content area with sidebar offset */}
+        <div className="flex-1 ml-14 mt-10 p-4 md:p-8">
+          <div className="max-w-4xl mx-auto space-y-6">
+            {renderPage()}
           </div>
         </div>
+
+        {/* Download Progress Toast - Bottom Left */}
+        <DownloadProgressToast onClick={downloadQueue.openQueue} />
+
+        {/* Download Queue Dialog */}
+        <DownloadQueue
+          isOpen={downloadQueue.isOpen}
+          onClose={downloadQueue.closeQueue}
+        />
       </div>
     </TooltipProvider>
   );

frontend/src/components/AlbumInfo.tsx

@@ -1,11 +1,12 @@
 import { Button } from "@/components/ui/button";
 import { Card, CardContent } from "@/components/ui/card";
-import { Download, FolderOpen } from "lucide-react";
+import { Download, FolderOpen, ImageDown } from "lucide-react";
 import { Spinner } from "@/components/ui/spinner";
+import { Tooltip, TooltipContent, TooltipTrigger } from "@/components/ui/tooltip";
 import { SearchAndSort } from "./SearchAndSort";
 import { TrackList } from "./TrackList";
 import { DownloadProgress } from "./DownloadProgress";
-import type { TrackMetadata } from "@/types/api";
+import type { TrackMetadata, TrackAvailability } from "@/types/api";
 
 interface AlbumInfoProps {
   albumInfo: {
@@ -31,11 +32,29 @@ interface AlbumInfoProps {
   currentDownloadInfo: { name: string; artists: string } | null;
   currentPage: number;
   itemsPerPage: number;
+  // Lyrics props
+  downloadedLyrics?: Set<string>;
+  failedLyrics?: Set<string>;
+  skippedLyrics?: Set<string>;
+  downloadingLyricsTrack?: string | null;
+  // Availability props
+  checkingAvailabilityTrack?: string | null;
+  availabilityMap?: Map<string, TrackAvailability>;
+  // Cover props
+  downloadedCovers?: Set<string>;
+  failedCovers?: Set<string>;
+  skippedCovers?: Set<string>;
+  downloadingCoverTrack?: string | null;
+  isBulkDownloadingCovers?: 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;
+  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;
+  onDownloadAllCovers?: () => void;
   onDownloadAll: () => void;
   onDownloadSelected: () => void;
   onStopDownload: () => void;
@@ -61,11 +80,26 @@ export function AlbumInfo({
   currentDownloadInfo,
   currentPage,
   itemsPerPage,
+  downloadedLyrics,
+  failedLyrics,
+  skippedLyrics,
+  downloadingLyricsTrack,
+  checkingAvailabilityTrack,
+  availabilityMap,
+  downloadedCovers,
+  failedCovers,
+  skippedCovers,
+  downloadingCoverTrack,
+  isBulkDownloadingCovers,
   onSearchChange,
   onSortChange,
   onToggleTrack,
   onToggleSelectAll,
   onDownloadTrack,
+  onDownloadLyrics,
+  onDownloadCover,
+  onCheckAvailability,
+  onDownloadAllCovers,
   onDownloadAll,
   onDownloadSelected,
   onStopDownload,
@@ -113,11 +147,8 @@ export function AlbumInfo({
                   <span>{albumInfo.total_tracks} songs</span>
                 </div>
               </div>
-              <div className="flex gap-2">
-                <Button
-                  onClick={onDownloadAll}
-                  disabled={isDownloading}
-                >
+              <div className="flex gap-2 flex-wrap">
+                <Button onClick={onDownloadAll} disabled={isDownloading}>
                   {isDownloading && bulkDownloadType === "all" ? (
                     <Spinner />
                   ) : (
@@ -139,6 +170,22 @@ export function AlbumInfo({
                     Download Selected ({selectedTracks.length})
                   </Button>
                 )}
+                {onDownloadAllCovers && (
+                  <Tooltip>
+                    <TooltipTrigger asChild>
+                      <Button
+                        onClick={onDownloadAllCovers}
+                        variant="outline"
+                        disabled={isBulkDownloadingCovers}
+                      >
+                        {isBulkDownloadingCovers ? <Spinner /> : <ImageDown className="h-4 w-4" />}
+                      </Button>
+                    </TooltipTrigger>
+                    <TooltipContent>
+                      <p>Download All Covers</p>
+                    </TooltipContent>
+                  </Tooltip>
+                )}
                 {downloadedTracks.size > 0 && (
                   <Button onClick={onOpenFolder} variant="outline">
                     <FolderOpen className="h-4 w-4" />
@@ -179,9 +226,22 @@ export function AlbumInfo({
           showCheckboxes={true}
           hideAlbumColumn={true}
           folderName={albumInfo.name}
+          downloadedLyrics={downloadedLyrics}
+          failedLyrics={failedLyrics}
+          skippedLyrics={skippedLyrics}
+          downloadingLyricsTrack={downloadingLyricsTrack}
+          checkingAvailabilityTrack={checkingAvailabilityTrack}
+          availabilityMap={availabilityMap}
           onToggleTrack={onToggleTrack}
           onToggleSelectAll={onToggleSelectAll}
           onDownloadTrack={onDownloadTrack}
+          onDownloadLyrics={onDownloadLyrics}
+          onDownloadCover={onDownloadCover}
+          downloadedCovers={downloadedCovers}
+          failedCovers={failedCovers}
+          skippedCovers={skippedCovers}
+          downloadingCoverTrack={downloadingCoverTrack}
+          onCheckAvailability={onCheckAvailability}
           onPageChange={onPageChange}
           onTrackClick={onTrackClick}
         />

frontend/src/components/ArtistInfo.tsx

@@ -1,11 +1,12 @@
 import { Button } from "@/components/ui/button";
 import { Card, CardContent } from "@/components/ui/card";
-import { Download, FolderOpen } from "lucide-react";
+import { Download, FolderOpen, ImageDown } from "lucide-react";
 import { Spinner } from "@/components/ui/spinner";
+import { Tooltip, TooltipContent, TooltipTrigger } from "@/components/ui/tooltip";
 import { SearchAndSort } from "./SearchAndSort";
 import { TrackList } from "./TrackList";
 import { DownloadProgress } from "./DownloadProgress";
-import type { TrackMetadata } from "@/types/api";
+import type { TrackMetadata, TrackAvailability } from "@/types/api";
 
 interface ArtistInfoProps {
   artistInfo: {
@@ -36,11 +37,29 @@ interface ArtistInfoProps {
   currentDownloadInfo: { name: string; artists: string } | null;
   currentPage: number;
   itemsPerPage: number;
+  // Lyrics props
+  downloadedLyrics?: Set<string>;
+  failedLyrics?: Set<string>;
+  skippedLyrics?: Set<string>;
+  downloadingLyricsTrack?: string | null;
+  // Availability props
+  checkingAvailabilityTrack?: string | null;
+  availabilityMap?: Map<string, TrackAvailability>;
+  // Cover props
+  downloadedCovers?: Set<string>;
+  failedCovers?: Set<string>;
+  skippedCovers?: Set<string>;
+  downloadingCoverTrack?: string | null;
+  isBulkDownloadingCovers?: 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;
+  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;
+  onDownloadAllCovers?: () => void;
   onDownloadAll: () => void;
   onDownloadSelected: () => void;
   onStopDownload: () => void;
@@ -68,11 +87,26 @@ export function ArtistInfo({
   currentDownloadInfo,
   currentPage,
   itemsPerPage,
+  downloadedLyrics,
+  failedLyrics,
+  skippedLyrics,
+  downloadingLyricsTrack,
+  checkingAvailabilityTrack,
+  availabilityMap,
+  downloadedCovers,
+  failedCovers,
+  skippedCovers,
+  downloadingCoverTrack,
+  isBulkDownloadingCovers,
   onSearchChange,
   onSortChange,
   onToggleTrack,
   onToggleSelectAll,
   onDownloadTrack,
+  onDownloadLyrics,
+  onDownloadCover,
+  onCheckAvailability,
+  onDownloadAllCovers,
   onDownloadAll,
   onDownloadSelected,
   onStopDownload,
@@ -152,14 +186,10 @@ export function ArtistInfo({
 
       {trackList.length > 0 && (
         <div className="space-y-4">
-          <div className="flex items-center justify-between">
+          <div className="flex items-center justify-between flex-wrap gap-2">
             <h3 className="text-2xl font-bold">Popular Tracks</h3>
-            <div className="flex gap-2">
-              <Button
-                onClick={onDownloadAll}
-                size="sm"
-                disabled={isDownloading}
-              >
+            <div className="flex gap-2 flex-wrap">
+              <Button onClick={onDownloadAll} size="sm" disabled={isDownloading}>
                 {isDownloading && bulkDownloadType === "all" ? (
                   <Spinner />
                 ) : (
@@ -182,6 +212,23 @@ export function ArtistInfo({
                   Download Selected ({selectedTracks.length})
                 </Button>
               )}
+              {onDownloadAllCovers && (
+                <Tooltip>
+                  <TooltipTrigger asChild>
+                    <Button
+                      onClick={onDownloadAllCovers}
+                      size="sm"
+                      variant="outline"
+                      disabled={isBulkDownloadingCovers}
+                    >
+                      {isBulkDownloadingCovers ? <Spinner /> : <ImageDown className="h-4 w-4" />}
+                    </Button>
+                  </TooltipTrigger>
+                  <TooltipContent>
+                    <p>Download All Covers</p>
+                  </TooltipContent>
+                </Tooltip>
+              )}
               {downloadedTracks.size > 0 && (
                 <Button onClick={onOpenFolder} size="sm" variant="outline">
                   <FolderOpen className="h-4 w-4" />
@@ -219,9 +266,22 @@ export function ArtistInfo({
             hideAlbumColumn={false}
             folderName={artistInfo.name}
             isArtistDiscography={true}
+            downloadedLyrics={downloadedLyrics}
+            failedLyrics={failedLyrics}
+            skippedLyrics={skippedLyrics}
+            downloadingLyricsTrack={downloadingLyricsTrack}
+            checkingAvailabilityTrack={checkingAvailabilityTrack}
+            availabilityMap={availabilityMap}
             onToggleTrack={onToggleTrack}
             onToggleSelectAll={onToggleSelectAll}
             onDownloadTrack={onDownloadTrack}
+            onDownloadLyrics={onDownloadLyrics}
+            onDownloadCover={onDownloadCover}
+            downloadedCovers={downloadedCovers}
+            failedCovers={failedCovers}
+            skippedCovers={skippedCovers}
+            downloadingCoverTrack={downloadingCoverTrack}
+            onCheckAvailability={onCheckAvailability}
             onPageChange={onPageChange}
             onAlbumClick={onAlbumClick}
             onArtistClick={onArtistClick}

frontend/src/components/AudioAnalysis.tsx

@@ -0,0 +1,194 @@
+import { Card, CardContent, CardHeader, CardTitle, CardDescription } from "@/components/ui/card";
+import { Spinner } from "@/components/ui/spinner";
+import { Button } from "@/components/ui/button";
+import {
+  Activity,
+  Waves,
+  Radio,
+  TrendingUp,
+  FileAudio,
+  Clock,
+  Gauge,
+  HardDrive
+} from "lucide-react";
+import type { AnalysisResult } from "@/types/api";
+
+interface AudioAnalysisProps {
+  result: AnalysisResult | null;
+  analyzing: boolean;
+  onAnalyze?: () => void;
+  showAnalyzeButton?: boolean;
+}
+
+export function AudioAnalysis({
+  result,
+  analyzing,
+  onAnalyze,
+  showAnalyzeButton = true
+}: AudioAnalysisProps) {
+  if (analyzing) {
+    return (
+      <Card>
+        <CardContent className="px-6">
+          <div className="flex items-center justify-center py-8 gap-3">
+            <Spinner />
+            <span className="text-muted-foreground">Analyzing audio quality...</span>
+          </div>
+        </CardContent>
+      </Card>
+    );
+  }
+
+  if (!result && showAnalyzeButton) {
+    return (
+      <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" />
+            <div className="text-center space-y-2">
+              <p className="font-medium">Audio Quality Analysis</p>
+              <p className="text-sm text-muted-foreground">
+                Verify the true lossless quality of downloaded files
+              </p>
+            </div>
+            {onAnalyze && (
+              <Button onClick={onAnalyze}>
+                <Activity className="h-4 w-4" />
+                Analyze Audio
+              </Button>
+            )}
+          </div>
+        </CardContent>
+      </Card>
+    );
+  }
+
+  if (!result) {
+    return null;
+  }
+
+  const formatDuration = (seconds: number) => {
+    const mins = Math.floor(seconds / 60);
+    const secs = Math.floor(seconds % 60);
+    return `${mins}:${secs.toString().padStart(2, '0')}`;
+  };
+
+  const formatNumber = (num: number) => {
+    return num.toFixed(2);
+  };
+
+  // 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>
+      </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
+            </div>
+            <p className="font-semibold">{(result.sample_rate / 1000).toFixed(1)} kHz</p>
+          </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>
+            <p className="font-semibold">{result.bit_depth}</p>
+          </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>
+        </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
+          </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>
+            <div>
+              <p className="text-xs text-muted-foreground">Peak Level</p>
+              <p className="font-semibold">{formatNumber(result.peak_amplitude)} dB</p>
+            </div>
+            <div>
+              <p className="text-xs text-muted-foreground">RMS Level</p>
+              <p className="font-semibold">{formatNumber(result.rms_level)} dB</p>
+            </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

@@ -0,0 +1,159 @@
+import { useState, useCallback, useEffect } from "react";
+import { Button } from "@/components/ui/button";
+import { Activity, Upload, ArrowLeft } from "lucide-react";
+import { AudioAnalysis } from "@/components/AudioAnalysis";
+import { SpectrumVisualization } from "@/components/SpectrumVisualization";
+import { useAudioAnalysis } from "@/hooks/useAudioAnalysis";
+import { SelectFile } from "../../wailsjs/go/main/App";
+import { toastWithSound as toast } from "@/lib/toast-with-sound";
+import { OnFileDrop, OnFileDropOff } from "../../wailsjs/runtime/runtime";
+
+interface AudioAnalysisPageProps {
+  onBack?: () => void;
+}
+
+export function AudioAnalysisPage({ onBack }: AudioAnalysisPageProps) {
+  const { analyzing, result, analyzeFile, clearResult } = useAudioAnalysis();
+  const [selectedFilePath, setSelectedFilePath] = useState<string>("");
+  const [isDragging, setIsDragging] = useState(false);
+
+  const handleSelectFile = async () => {
+    try {
+      const filePath = await SelectFile();
+      if (filePath) {
+        setSelectedFilePath(filePath);
+        await analyzeFile(filePath);
+      }
+    } catch (err) {
+      toast.error("File Selection Failed", {
+        description: err instanceof Error ? err.message : "Failed to select file",
+      });
+    }
+  };
+
+  const handleFileDrop = useCallback(
+    async (_x: number, _y: number, paths: string[]) => {
+      setIsDragging(false);
+
+      if (paths.length === 0) return;
+
+      const filePath = paths[0];
+
+      if (!filePath.toLowerCase().endsWith(".flac")) {
+        toast.error("Invalid File Type", {
+          description: "Please drop a FLAC file for analysis",
+        });
+        return;
+      }
+
+      setSelectedFilePath(filePath);
+      await analyzeFile(filePath);
+    },
+    [analyzeFile]
+  );
+
+  useEffect(() => {
+    OnFileDrop((x, y, paths) => {
+      handleFileDrop(x, y, paths);
+    }, true);
+
+    return () => {
+      OnFileDropOff();
+    };
+  }, [handleFileDrop]);
+
+  const handleAnalyzeAnother = () => {
+    clearResult();
+    setSelectedFilePath("");
+  };
+
+  return (
+    <div className="space-y-6">
+      {/* Header */}
+      <div className="flex items-center gap-4">
+        {onBack && (
+          <Button variant="ghost" size="icon" onClick={onBack}>
+            <ArrowLeft className="h-5 w-5" />
+          </Button>
+        )}
+        <h1 className="text-2xl font-bold">Audio Quality Analyzer</h1>
+      </div>
+
+      {/* File Selection */}
+      {!result && !analyzing && (
+        <div
+          className={`flex flex-col items-center justify-center py-24 border-2 border-dashed rounded-lg transition-colors ${
+            isDragging
+              ? "border-primary bg-primary/10"
+              : "border-muted-foreground/30 hover:border-muted-foreground/50"
+          }`}
+          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}
+        >
+          <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">
+            {isDragging
+              ? "Drop your FLAC file here"
+              : "Drag and drop a FLAC file here, or click the button below to select"}
+          </p>
+          <Button onClick={handleSelectFile} size="lg">
+            <Upload className="h-5 w-5" />
+            Select FLAC File
+          </Button>
+        </div>
+      )}
+
+      {/* Loading State */}
+      {analyzing && !result && (
+        <div className="flex flex-col items-center justify-center py-16">
+          <div className="animate-spin rounded-full h-12 w-12 border-b-2 border-primary mb-4"></div>
+          <p className="text-sm text-muted-foreground">Analyzing audio file...</p>
+        </div>
+      )}
+
+      {/* 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>
+
+          {/* Spectrum Visualization */}
+          <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/DebugLoggerPage.tsx

@@ -0,0 +1,112 @@
+import { useState, useEffect, useRef } from "react";
+import { Trash2, Copy, Check } from "lucide-react";
+import { Button } from "@/components/ui/button";
+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 DebugLoggerPage() {
+  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 (
+    <div className="space-y-6">
+      <div className="flex items-center justify-between">
+        <h1 className="text-2xl font-bold">Debug Logs</h1>
+        <div className="flex items-center gap-2">
+          <Button
+            variant="outline"
+            size="sm"
+            className="gap-1.5"
+            onClick={handleCopy}
+            disabled={logs.length === 0}
+          >
+            {copied ? <Check className="h-4 w-4" /> : <Copy className="h-4 w-4" />}
+            Copy
+          </Button>
+          <Button
+            variant="outline"
+            size="sm"
+            className="gap-1.5"
+            onClick={handleClear}
+            disabled={logs.length === 0}
+          >
+            <Trash2 className="h-4 w-4" />
+            Clear
+          </Button>
+        </div>
+      </div>
+
+      <div
+        ref={scrollRef}
+        className="h-[calc(100vh-220px)] overflow-y-auto bg-muted/50 rounded-lg p-4 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>
+    </div>
+  );
+}

frontend/src/components/DownloadProgressToast.tsx

@@ -1,18 +1,35 @@
 import { useDownloadProgress } from "@/hooks/useDownloadProgress";
-import { Download } from "lucide-react";
+import { useDownloadQueueData } from "@/hooks/useDownloadQueueData";
+import { Download, ChevronRight } from "lucide-react";
+import { Button } from "@/components/ui/button";
 
-export function DownloadProgressToast() {
+interface DownloadProgressToastProps {
+  onClick: () => void;
+}
+
+export function DownloadProgressToast({ onClick }: DownloadProgressToastProps) {
   const progress = useDownloadProgress();
+  const queueInfo = useDownloadQueueData();
 
-  if (!progress.is_downloading) {
+  // Show indicator if there are any queued or downloading items
+  // Don't show for completed/failed/skipped only
+  const hasActiveDownloads = queueInfo.queue.some(
+    item => item.status === "queued" || item.status === "downloading"
+  );
+
+  if (!hasActiveDownloads) {
     return null;
   }
 
   return (
-    <div className="fixed bottom-4 left-4 z-50 animate-in slide-in-from-bottom-5 data-[state=closed]:animate-out data-[state=closed]:slide-out-to-bottom-5">
-      <div className="bg-background border rounded-lg shadow-lg p-3">
+    <div className="fixed bottom-4 left-[calc(56px+1rem)] z-50 animate-in slide-in-from-bottom-5 data-[state=closed]:animate-out data-[state=closed]:slide-out-to-bottom-5">
+      <Button
+        variant="outline"
+        className="bg-background border rounded-lg shadow-lg p-3 h-auto hover:bg-muted/50 transition-colors cursor-pointer"
+        onClick={onClick}
+      >
         <div className="flex items-center gap-3">
-          <Download className="h-4 w-4 text-primary animate-bounce" />
+          <Download className={`h-4 w-4 text-primary ${progress.is_downloading ? 'animate-bounce' : ''}`} />
           <div className="flex flex-col min-w-[80px]">
             <p className="text-sm font-medium font-mono tabular-nums">
               {progress.mb_downloaded.toFixed(2)} MB
@@ -23,8 +40,9 @@ export function DownloadProgressToast() {
               </p>
             )}
           </div>
+          <ChevronRight className="h-4 w-4 text-muted-foreground ml-1" />
         </div>
-      </div>
+      </Button>
     </div>
   );
 }

frontend/src/components/DownloadQueue.tsx

@@ -0,0 +1,287 @@
+import { useEffect, useState } from "react";
+import { X, Download, CheckCircle2, XCircle, Clock, FileCheck, Trash2, HardDrive, Zap, Timer } from "lucide-react";
+import { Button } from "@/components/ui/button";
+import {
+  Dialog,
+  DialogContent,
+  DialogHeader,
+  DialogTitle,
+} from "@/components/ui/dialog";
+
+import { Badge } from "@/components/ui/badge";
+import { GetDownloadQueue, ClearCompletedDownloads } from "../../wailsjs/go/main/App";
+import { backend } from "../../wailsjs/go/models";
+
+interface DownloadQueueProps {
+  isOpen: boolean;
+  onClose: () => void;
+}
+
+export function DownloadQueue({ isOpen, onClose }: DownloadQueueProps) {
+  const [queueInfo, setQueueInfo] = useState<backend.DownloadQueueInfo>(
+    new backend.DownloadQueueInfo({
+      is_downloading: false,
+      queue: [],
+      current_speed: 0,
+      total_downloaded: 0,
+      session_start_time: 0,
+      queued_count: 0,
+      completed_count: 0,
+      failed_count: 0,
+      skipped_count: 0,
+    })
+  );
+
+  useEffect(() => {
+    if (!isOpen) return;
+
+    const fetchQueue = async () => {
+      try {
+        const info = await GetDownloadQueue();
+        setQueueInfo(info);
+      } catch (error) {
+        console.error("Failed to get download queue:", error);
+      }
+    };
+
+    // Initial fetch
+    fetchQueue();
+
+    // Poll every 500ms when dialog is open
+    const interval = setInterval(fetchQueue, 500);
+
+    return () => clearInterval(interval);
+  }, [isOpen]);
+
+  const handleClearHistory = async () => {
+    try {
+      await ClearCompletedDownloads();
+      // Refetch immediately to update UI
+      const info = await GetDownloadQueue();
+      setQueueInfo(info);
+    } catch (error) {
+      console.error("Failed to clear history:", error);
+    }
+  };
+
+  const getStatusIcon = (status: string) => {
+    switch (status) {
+      case "downloading":
+        return <Download className="h-4 w-4 text-blue-500 animate-bounce" />;
+      case "completed":
+        return <CheckCircle2 className="h-4 w-4 text-green-500" />;
+      case "failed":
+        return <XCircle className="h-4 w-4 text-red-500" />;
+      case "skipped":
+        return <FileCheck className="h-4 w-4 text-yellow-500" />;
+      case "queued":
+        return <Clock className="h-4 w-4 text-muted-foreground" />;
+      default:
+        return null;
+    }
+  };
+
+  const getStatusBadge = (status: string) => {
+    const variants: Record<string, "default" | "secondary" | "destructive" | "outline"> = {
+      downloading: "default",
+      completed: "outline",
+      failed: "destructive",
+      skipped: "secondary",
+      queued: "outline",
+    };
+
+    return (
+      <Badge variant={variants[status] || "outline"} className="text-xs">
+        {status}
+      </Badge>
+    );
+  };
+
+  // Format session duration
+  const formatDuration = (startTimestamp: number) => {
+    if (startTimestamp === 0) return "—";
+    const now = Math.floor(Date.now() / 1000);
+    const durationSeconds = now - startTimestamp;
+    
+    const hours = Math.floor(durationSeconds / 3600);
+    const minutes = Math.floor((durationSeconds % 3600) / 60);
+    const seconds = durationSeconds % 60;
+    
+    if (hours > 0) {
+      return `${hours}h ${minutes}m ${seconds}s`;
+    } else if (minutes > 0) {
+      return `${minutes}m ${seconds}s`;
+    } else {
+      return `${seconds}s`;
+    }
+  };
+
+  return (
+    <Dialog open={isOpen} onOpenChange={onClose}>
+      <DialogContent className="max-w-[1200px] w-[95vw] max-h-[80vh] flex flex-col p-0 gap-0 [&>button]:hidden">
+        <DialogHeader className="px-6 pt-6 pb-4 border-b space-y-0">
+          <div className="flex items-center justify-between mb-4 pr-8">
+            <DialogTitle className="text-lg font-semibold">Download Queue</DialogTitle>
+            <div className="flex items-center gap-2">
+              {(queueInfo.completed_count > 0 || queueInfo.failed_count > 0 || queueInfo.skipped_count > 0) && (
+                <Button
+                  variant="ghost"
+                  size="sm"
+                  className="h-7 text-xs gap-1.5"
+                  onClick={handleClearHistory}
+                >
+                  <Trash2 className="h-3 w-3" />
+                  Clear History
+                </Button>
+              )}
+              <Button
+                variant="ghost"
+                size="icon"
+                className="h-7 w-7 rounded-full hover:bg-muted"
+                onClick={onClose}
+              >
+                <X className="h-4 w-4" />
+              </Button>
+            </div>
+          </div>
+
+          {/* Queue Status */}
+          <div className="flex items-center gap-4 text-sm">
+            <div className="flex items-center gap-1.5">
+              <Clock className="h-3.5 w-3.5 text-muted-foreground" />
+              <span className="text-muted-foreground">Queued:</span>
+              <span className="font-semibold">{queueInfo.queued_count}</span>
+            </div>
+            <div className="flex items-center gap-1.5">
+              <CheckCircle2 className="h-3.5 w-3.5 text-green-500" />
+              <span className="text-muted-foreground">Completed:</span>
+              <span className="font-semibold">{queueInfo.completed_count}</span>
+            </div>
+            <div className="flex items-center gap-1.5">
+              <FileCheck className="h-3.5 w-3.5 text-yellow-500" />
+              <span className="text-muted-foreground">Skipped:</span>
+              <span className="font-semibold">{queueInfo.skipped_count}</span>
+            </div>
+            <div className="flex items-center gap-1.5">
+              <XCircle className="h-3.5 w-3.5 text-red-500" />
+              <span className="text-muted-foreground">Failed:</span>
+              <span className="font-semibold">{queueInfo.failed_count}</span>
+            </div>
+          </div>
+
+          {/* Session Stats */}
+          <div className="flex items-center gap-4 text-sm pt-3 mt-3 border-t">
+            <div className="flex items-center gap-1.5">
+              <HardDrive className="h-3.5 w-3.5 text-muted-foreground" />
+              <span className="text-muted-foreground">Downloaded:</span>
+              <span className="font-semibold font-mono">
+                {queueInfo.total_downloaded > 0 ? `${queueInfo.total_downloaded.toFixed(2)} MB` : "0.00 MB"}
+              </span>
+            </div>
+            <div className="flex items-center gap-1.5">
+              <Zap className="h-3.5 w-3.5 text-muted-foreground" />
+              <span className="text-muted-foreground">Speed:</span>
+              <span className="font-semibold font-mono">
+                {queueInfo.current_speed > 0 && queueInfo.is_downloading 
+                  ? `${queueInfo.current_speed.toFixed(2)} MB/s` 
+                  : "—"}
+              </span>
+            </div>
+            <div className="flex items-center gap-1.5">
+              <Timer className="h-3.5 w-3.5 text-muted-foreground" />
+              <span className="text-muted-foreground">Duration:</span>
+              <span className="font-semibold font-mono">
+                {queueInfo.session_start_time > 0 ? formatDuration(queueInfo.session_start_time) : "—"}
+              </span>
+            </div>
+          </div>
+
+        </DialogHeader>
+
+        {/* Download Queue List */}
+        <div className="flex-1 overflow-y-auto px-6 custom-scrollbar">
+          <div className="space-y-2 py-4">
+            {queueInfo.queue.length === 0 ? (
+              <div className="text-center py-12 text-muted-foreground">
+                <Download className="h-12 w-12 mx-auto mb-3 opacity-20" />
+                <p>No downloads in queue</p>
+              </div>
+            ) : (
+              queueInfo.queue.map((item) => (
+                <div
+                  key={item.id}
+                  className="border rounded-lg p-3 hover:bg-muted/30 transition-colors"
+                >
+                  <div className="flex items-start gap-3">
+                    <div className="mt-1">{getStatusIcon(item.status)}</div>
+
+                    <div className="flex-1 min-w-0">
+                      <div className="flex items-start justify-between gap-2 mb-1">
+                        <div className="flex-1 min-w-0">
+                          <p className="font-medium truncate">{item.track_name}</p>
+                          <p className="text-sm text-muted-foreground truncate">
+                            {item.artist_name}
+                            {item.album_name && ` • ${item.album_name}`}
+                          </p>
+                        </div>
+                        {getStatusBadge(item.status)}
+                      </div>
+
+                      {/* Info for downloading items */}
+                      {item.status === "downloading" && (
+                        <div className="flex items-center gap-3 mt-1.5 text-xs text-muted-foreground font-mono">
+                          <span>
+                            {item.progress > 0
+                              ? `${item.progress.toFixed(2)} MB`
+                              : queueInfo.is_downloading && queueInfo.current_speed > 0
+                              ? "Downloading..."
+                              : "Starting..."}
+                          </span>
+                          <span>
+                            {item.speed > 0
+                              ? `${item.speed.toFixed(2)} MB/s`
+                              : queueInfo.current_speed > 0
+                              ? `${queueInfo.current_speed.toFixed(2)} MB/s`
+                              : "—"}
+                          </span>
+                        </div>
+                      )}
+
+                      {/* Completed info */}
+                      {item.status === "completed" && (
+                        <div className="flex items-center gap-3 mt-1.5 text-xs text-muted-foreground">
+                          <span className="font-mono">{item.progress.toFixed(2)} MB</span>
+                        </div>
+                      )}
+
+                      {/* Skipped info */}
+                      {item.status === "skipped" && (
+                        <div className="mt-1.5 text-xs text-muted-foreground">
+                          File already exists
+                        </div>
+                      )}
+
+                      {/* Error message */}
+                      {item.status === "failed" && item.error_message && (
+                        <div className="mt-1.5 text-xs text-red-500 bg-red-50 dark:bg-red-950/20 rounded px-2 py-1">
+                          {item.error_message}
+                        </div>
+                      )}
+
+                      {/* File path for completed/skipped */}
+                      {(item.status === "completed" || item.status === "skipped") && item.file_path && (
+                        <div className="mt-1.5 text-xs text-muted-foreground truncate font-mono">
+                          {item.file_path}
+                        </div>
+                      )}
+                    </div>
+                  </div>
+                </div>
+              ))
+            )}
+          </div>
+        </div>
+      </DialogContent>
+    </Dialog>
+  );
+}

frontend/src/components/Header.tsx

@@ -1,18 +1,19 @@
-import { Button } from "@/components/ui/button";
 import { Badge } from "@/components/ui/badge";
-import { Settings } from "@/components/Settings";
 import {
   Tooltip,
   TooltipContent,
   TooltipTrigger,
 } from "@/components/ui/tooltip";
+import { openExternal } from "@/lib/utils";
+import { formatRelativeTime } from "@/lib/relative-time";
 
 interface HeaderProps {
   version: string;
   hasUpdate: boolean;
+  releaseDate?: string | null;
 }
 
-export function Header({ version, hasUpdate }: HeaderProps) {
+export function Header({ version, hasUpdate, releaseDate }: HeaderProps) {
   return (
     <div className="relative">
       <div className="text-center space-y-2">
@@ -30,16 +31,24 @@ export function Header({ version, hasUpdate }: HeaderProps) {
             SpotiFLAC
           </h1>
           <div className="relative">
+            <Tooltip>
+              <TooltipTrigger asChild>
                 <Badge variant="default" asChild>
-              <a
-                href="https://github.com/afkarxyz/SpotiFLAC/releases"
-                target="_blank"
-                rel="noopener noreferrer"
+                  <button
+                    type="button"
+                    onClick={() => openExternal("https://github.com/afkarxyz/SpotiFLAC/releases")}
                     className="cursor-pointer hover:opacity-80 transition-opacity"
                   >
                     v{version}
-              </a>
+                  </button>
                 </Badge>
+              </TooltipTrigger>
+              {hasUpdate && releaseDate && (
+                <TooltipContent>
+                  <p>{formatRelativeTime(releaseDate)}</p>
+                </TooltipContent>
+              )}
+            </Tooltip>
             {hasUpdate && (
               <span className="absolute -top-1 -right-1 flex h-3 w-3">
                 <span className="animate-ping absolute inline-flex h-full w-full rounded-full bg-green-400 opacity-75"></span>
@@ -52,28 +61,6 @@ export function Header({ version, hasUpdate }: HeaderProps) {
           Get Spotify tracks in true FLAC from Tidal, Deezer, Qobuz & Amazon Music — no account required.
         </p>
       </div>
-      <div className="absolute right-0 top-0 flex gap-2">
-        <Tooltip>
-          <TooltipTrigger asChild>
-            <Button variant="outline" size="icon" asChild>
-              <a
-                href="https://github.com/afkarxyz/SpotiFLAC/issues"
-                target="_blank"
-                rel="noopener noreferrer"
-                aria-label="GitHub Issues"
-              >
-                <svg viewBox="0 0 24 24" className="h-5 w-5" fill="currentColor">
-                  <path d="M12 0c-6.626 0-12 5.373-12 12 0 5.302 3.438 9.8 8.207 11.387.599.111.793-.261.793-.577v-2.234c-3.338.726-4.033-1.416-4.033-1.416-.546-1.387-1.333-1.756-1.333-1.756-1.089-.745.083-.729.083-.729 1.205.084 1.839 1.237 1.839 1.237 1.07 1.834 2.807 1.304 3.492.997.107-.775.418-1.305.762-1.604-2.665-.305-5.467-1.334-5.467-5.931 0-1.311.469-2.381 1.236-3.221-.124-.303-.535-1.524.117-3.176 0 0 1.008-.322 3.301 1.23.957-.266 1.983-.399 3.003-.404 1.02.005 2.047.138 3.006.404 2.291-1.552 3.297-1.23 3.297-1.23.653 1.653.242 2.874.118 3.176.77.84 1.235 1.911 1.235 3.221 0 4.609-2.807 5.624-5.479 5.921.43.372.823 1.102.823 2.222v3.293c0 .319.192.694.801.576 4.765-1.589 8.199-6.086 8.199-11.386 0-6.627-5.373-12-12-12z" />
-                </svg>
-              </a>
-            </Button>
-          </TooltipTrigger>
-          <TooltipContent side="left">
-            <p>Report bug or request feature</p>
-          </TooltipContent>
-        </Tooltip>
-        <Settings />
-      </div>
     </div>
   );
 }

frontend/src/components/PlatformIcons.tsx

@@ -0,0 +1,28 @@
+// Platform Icons for streaming services
+
+export const TidalIcon = ({ className = "w-4 h-4" }: { className?: string }) => (
+  <svg viewBox="0 0 24 24" className={`${className} fill-current`}>
+    <path d="M4.022 4.5 0 8.516l3.997 3.99 3.997-3.984L4.022 4.5Zm7.956 0L7.994 8.522l4.003 3.984L16 8.484 11.978 4.5Zm8.007 0L24 8.528l-4.003 3.978L16 8.484 19.985 4.5Z"></path>
+    <path d="m8.012 16.534 3.991 3.966L16 16.49l-4.003-3.984-3.985 4.028Z"></path>
+  </svg>
+);
+
+export const DeezerIcon = ({ className = "w-4 h-4" }: { className?: string }) => (
+  <svg viewBox="0 0 24 24" className={`${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={`${className} fill-current`}>
+    <path d="M21.744 9.815C19.836 1.261 8.393-1 3.55 6.64-.618 13.214 4 22 11.988 22c2.387 0 4.63-.83 6.394-2.304l2.252 2.252 1.224-1.224-2.252-2.253c1.983-2.407 2.823-5.586 2.138-8.656Zm-3.508 7.297L16.4 15.275c-.786-.787-2.017.432-1.224 1.225L17 18.326C10.29 23.656.5 16 5.16 7.667c3.502-6.264 13.172-4.348 14.707 2.574.529 2.385-.06 4.987-1.63 6.87Z"></path>
+    <path d="M13.4 8.684a3.59 3.59 0 0 0-4.712 1.9 3.59 3.59 0 0 0 1.9 4.712 3.594 3.594 0 0 0 4.711-1.89 3.598 3.598 0 0 0-1.9-4.722Zm-.737 3.591a.727.727 0 0 1-.965.384.727.727 0 0 1-.384-.965.727.727 0 0 1 .965-.384.73.73 0 0 1 .384.965Z"></path>
+  </svg>
+);
+
+export const AmazonIcon = ({ className = "w-4 h-4" }: { className?: string }) => (
+  <svg viewBox="0 0 24 24" className={`${className} fill-current`}>
+    <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>
+);

frontend/src/components/PlaylistInfo.tsx

@@ -1,11 +1,12 @@
 import { Button } from "@/components/ui/button";
 import { Card, CardContent } from "@/components/ui/card";
-import { Download, FolderOpen } from "lucide-react";
+import { Download, FolderOpen, ImageDown } from "lucide-react";
 import { Spinner } from "@/components/ui/spinner";
+import { Tooltip, TooltipContent, TooltipTrigger } from "@/components/ui/tooltip";
 import { SearchAndSort } from "./SearchAndSort";
 import { TrackList } from "./TrackList";
 import { DownloadProgress } from "./DownloadProgress";
-import type { TrackMetadata } from "@/types/api";
+import type { TrackMetadata, TrackAvailability } from "@/types/api";
 
 interface PlaylistInfoProps {
   playlistInfo: {
@@ -35,11 +36,29 @@ interface PlaylistInfoProps {
   currentDownloadInfo: { name: string; artists: string } | null;
   currentPage: number;
   itemsPerPage: number;
+  // Lyrics props
+  downloadedLyrics?: Set<string>;
+  failedLyrics?: Set<string>;
+  skippedLyrics?: Set<string>;
+  downloadingLyricsTrack?: string | null;
+  // Availability props
+  checkingAvailabilityTrack?: string | null;
+  availabilityMap?: Map<string, TrackAvailability>;
+  // Cover props
+  downloadedCovers?: Set<string>;
+  failedCovers?: Set<string>;
+  skippedCovers?: Set<string>;
+  downloadingCoverTrack?: string | null;
+  isBulkDownloadingCovers?: 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;
+  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;
+  onDownloadAllCovers?: () => void;
   onDownloadAll: () => void;
   onDownloadSelected: () => void;
   onStopDownload: () => void;
@@ -66,11 +85,26 @@ export function PlaylistInfo({
   currentDownloadInfo,
   currentPage,
   itemsPerPage,
+  downloadedLyrics,
+  failedLyrics,
+  skippedLyrics,
+  downloadingLyricsTrack,
+  checkingAvailabilityTrack,
+  availabilityMap,
+  downloadedCovers,
+  failedCovers,
+  skippedCovers,
+  downloadingCoverTrack,
+  isBulkDownloadingCovers,
   onSearchChange,
   onSortChange,
   onToggleTrack,
   onToggleSelectAll,
   onDownloadTrack,
+  onDownloadLyrics,
+  onDownloadCover,
+  onCheckAvailability,
+  onDownloadAllCovers,
   onDownloadAll,
   onDownloadSelected,
   onStopDownload,
@@ -104,11 +138,8 @@ export function PlaylistInfo({
                   <span>{playlistInfo.followers.total.toLocaleString()} followers</span>
                 </div>
               </div>
-              <div className="flex gap-2">
-                <Button
-                  onClick={onDownloadAll}
-                  disabled={isDownloading}
-                >
+              <div className="flex gap-2 flex-wrap">
+                <Button onClick={onDownloadAll} disabled={isDownloading}>
                   {isDownloading && bulkDownloadType === "all" ? (
                     <Spinner />
                   ) : (
@@ -130,6 +161,22 @@ export function PlaylistInfo({
                     Download Selected ({selectedTracks.length})
                   </Button>
                 )}
+                {onDownloadAllCovers && (
+                  <Tooltip>
+                    <TooltipTrigger asChild>
+                      <Button
+                        onClick={onDownloadAllCovers}
+                        variant="outline"
+                        disabled={isBulkDownloadingCovers}
+                      >
+                        {isBulkDownloadingCovers ? <Spinner /> : <ImageDown className="h-4 w-4" />}
+                      </Button>
+                    </TooltipTrigger>
+                    <TooltipContent>
+                      <p>Download All Covers</p>
+                    </TooltipContent>
+                  </Tooltip>
+                )}
                 {downloadedTracks.size > 0 && (
                   <Button onClick={onOpenFolder} variant="outline">
                     <FolderOpen className="h-4 w-4" />
@@ -170,9 +217,22 @@ export function PlaylistInfo({
           showCheckboxes={true}
           hideAlbumColumn={false}
           folderName={playlistInfo.owner.name}
+          downloadedLyrics={downloadedLyrics}
+          failedLyrics={failedLyrics}
+          skippedLyrics={skippedLyrics}
+          downloadingLyricsTrack={downloadingLyricsTrack}
+          checkingAvailabilityTrack={checkingAvailabilityTrack}
+          availabilityMap={availabilityMap}
+          downloadedCovers={downloadedCovers}
+          failedCovers={failedCovers}
+          skippedCovers={skippedCovers}
+          downloadingCoverTrack={downloadingCoverTrack}
           onToggleTrack={onToggleTrack}
           onToggleSelectAll={onToggleSelectAll}
           onDownloadTrack={onDownloadTrack}
+          onDownloadLyrics={onDownloadLyrics}
+          onDownloadCover={onDownloadCover}
+          onCheckAvailability={onCheckAvailability}
           onPageChange={onPageChange}
           onAlbumClick={onAlbumClick}
           onArtistClick={onArtistClick}

frontend/src/components/Settings.tsx

@@ -19,7 +19,8 @@ import {
 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 } from "lucide-react";
+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";
@@ -281,7 +282,7 @@ export function Settings() {
 
             {/* Theme Mode Selection */}
             <div className="space-y-2">
-              <Label htmlFor="theme-mode">Theme</Label>
+              <Label htmlFor="theme-mode">Mode</Label>
               <Select value={tempSettings.themeMode} onValueChange={handleThemeModeChange}>
                 <SelectTrigger id="theme-mode">
                   <SelectValue placeholder="Select theme mode" />
@@ -294,9 +295,9 @@ export function Settings() {
               </Select>
             </div>
 
-            {/* Theme Color Selection */}
+            {/* Accent Selection */}
             <div className="space-y-2">
-              <Label htmlFor="theme">Theme Color</Label>
+              <Label htmlFor="theme">Accent</Label>
               <Select value={tempSettings.theme} onValueChange={handleThemeChange}>
                 <SelectTrigger id="theme">
                   <SelectValue placeholder="Select a theme" />
@@ -400,6 +401,21 @@ export function Settings() {
                 </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">

frontend/src/components/SettingsPage.tsx

@@ -0,0 +1,345 @@
+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 {
+  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 { FolderOpen, Save, RotateCcw, Info, Volume2 } 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 { themes, applyTheme } from "@/lib/themes";
+import { SelectFolder } from "../../wailsjs/go/main/App";
+import { toastWithSound as toast } from "@/lib/toast-with-sound";
+
+// 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 SettingsPage() {
+  const [savedSettings, setSavedSettings] = useState<SettingsType>(getSettings());
+  const [tempSettings, setTempSettings] = useState<SettingsType>(savedSettings);
+  const [isDark, setIsDark] = useState(document.documentElement.classList.contains('dark'));
+
+  useEffect(() => {
+    applyThemeMode(savedSettings.themeMode);
+    applyTheme(savedSettings.theme);
+
+    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]);
+
+  useEffect(() => {
+    applyThemeMode(tempSettings.themeMode);
+    applyTheme(tempSettings.theme);
+    applyFont(tempSettings.fontFamily);
+    setTimeout(() => {
+      setIsDark(document.documentElement.classList.contains('dark'));
+    }, 0);
+  }, [tempSettings.themeMode, tempSettings.theme, tempSettings.fontFamily]);
+
+  useEffect(() => {
+    const loadDefaults = async () => {
+      if (!savedSettings.downloadPath) {
+        const settingsWithDefaults = await getSettingsWithDefaults();
+        setSavedSettings(settingsWithDefaults);
+        setTempSettings(settingsWithDefaults);
+      }
+    };
+    loadDefaults();
+  }, []);
+
+  const handleSave = () => {
+    saveSettings(tempSettings);
+    setSavedSettings(tempSettings);
+    toast.success("Settings saved");
+  };
+
+  const handleReset = async () => {
+    const defaultSettings = await resetToDefaultSettings();
+    setTempSettings(defaultSettings);
+    setSavedSettings(defaultSettings);
+    applyThemeMode(defaultSettings.themeMode);
+    applyTheme(defaultSettings.theme);
+    applyFont(defaultSettings.fontFamily);
+    toast.success("Settings reset to default");
+  };
+
+  const handleBrowseFolder = async () => {
+    try {
+      const selectedPath = await SelectFolder(tempSettings.downloadPath || "");
+      if (selectedPath && selectedPath.trim() !== "") {
+        setTempSettings((prev) => ({ ...prev, downloadPath: selectedPath }));
+      }
+    } catch (error) {
+      console.error("Error selecting folder:", error);
+      toast.error(`Error selecting folder: ${error}`);
+    }
+  };
+
+  return (
+    <div className="space-y-6">
+      <h1 className="text-2xl font-bold">Settings</h1>
+
+      <div className="grid grid-cols-1 md:grid-cols-2 gap-6">
+        {/* 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) => setTempSettings((prev) => ({ ...prev, downloadPath: 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={(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>
+            <Select
+              value={tempSettings.themeMode}
+              onValueChange={(value: "auto" | "light" | "dark") => setTempSettings((prev) => ({ ...prev, themeMode: value }))}
+            >
+              <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 */}
+          <div className="space-y-2">
+            <Label htmlFor="theme">Accent</Label>
+            <Select
+              value={tempSettings.theme}
+              onValueChange={(value) => setTempSettings((prev) => ({ ...prev, theme: value }))}
+            >
+              <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>
+
+          {/* Font */}
+          <div className="space-y-2">
+            <Label htmlFor="font">Font</Label>
+            <Select
+              value={tempSettings.fontFamily}
+              onValueChange={(value: FontFamily) => setTempSettings((prev) => ({ ...prev, fontFamily: value }))}
+            >
+              <SelectTrigger id="font">
+                <SelectValue placeholder="Select a font" />
+              </SelectTrigger>
+              <SelectContent>
+                {FONT_OPTIONS.map((font) => (
+                  <SelectItem key={font.value} value={font.value}>
+                    <span style={{ fontFamily: font.fontFamily }}>{font.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 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"
+              checked={tempSettings.sfxEnabled}
+              onCheckedChange={(checked) => setTempSettings(prev => ({ ...prev, sfxEnabled: checked }))}
+            />
+          </div>
+        </div>
+      </div>
+
+      {/* Actions */}
+      <div className="flex gap-2 justify-between pt-4 border-t">
+        <Button variant="outline" onClick={handleReset} className="gap-1.5">
+          <RotateCcw className="h-4 w-4" />
+          Reset to Default
+        </Button>
+        <Button onClick={handleSave} className="gap-1.5">
+          <Save className="h-4 w-4" />
+          Save Changes
+        </Button>
+      </div>
+    </div>
+  );
+}

frontend/src/components/Sidebar.tsx

@@ -0,0 +1,86 @@
+import { Home, Settings, Bug, Activity, LayoutGrid } from "lucide-react";
+import {
+  Tooltip,
+  TooltipContent,
+  TooltipTrigger,
+} from "@/components/ui/tooltip";
+import { Button } from "@/components/ui/button";
+import { openExternal } from "@/lib/utils";
+
+export type PageType = "main" | "settings" | "debug" | "audio-analysis";
+
+interface SidebarProps {
+  currentPage: PageType;
+  onPageChange: (page: PageType) => void;
+}
+
+export function Sidebar({ currentPage, onPageChange }: SidebarProps) {
+  const navItems = [
+    { 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: "debug" as PageType, icon: Bug, label: "Debug Logs" },
+  ];
+
+  return (
+    <div className="fixed left-0 top-0 h-full w-14 bg-card border-r border-border flex flex-col items-center py-14 z-30">
+      <div className="flex flex-col gap-2 flex-1">
+        {navItems.map((item) => (
+          <Tooltip key={item.id} delayDuration={0}>
+            <TooltipTrigger asChild>
+              <Button
+                variant={currentPage === item.id ? "secondary" : "ghost"}
+                size="icon"
+                className="h-10 w-10"
+                onClick={() => onPageChange(item.id)}
+              >
+                <item.icon className="h-5 w-5" />
+              </Button>
+            </TooltipTrigger>
+            <TooltipContent side="right">
+              <p>{item.label}</p>
+            </TooltipContent>
+          </Tooltip>
+        ))}
+      </div>
+      
+      {/* GitHub - below debug */}
+      <Tooltip delayDuration={0}>
+        <TooltipTrigger asChild>
+          <Button
+            variant="ghost"
+            size="icon"
+            className="h-10 w-10"
+            onClick={() => openExternal("https://github.com/afkarxyz/SpotiFLAC/issues")}
+          >
+            <svg viewBox="0 0 24 24" className="h-5 w-5" fill="currentColor">
+              <path d="M12 0c-6.626 0-12 5.373-12 12 0 5.302 3.438 9.8 8.207 11.387.599.111.793-.261.793-.577v-2.234c-3.338.726-4.033-1.416-4.033-1.416-.546-1.387-1.333-1.756-1.333-1.756-1.089-.745.083-.729.083-.729 1.205.084 1.839 1.237 1.839 1.237 1.07 1.834 2.807 1.304 3.492.997.107-.775.418-1.305.762-1.604-2.665-.305-5.467-1.334-5.467-5.931 0-1.311.469-2.381 1.236-3.221-.124-.303-.535-1.524.117-3.176 0 0 1.008-.322 3.301 1.23.957-.266 1.983-.399 3.003-.404 1.02.005 2.047.138 3.006.404 2.291-1.552 3.297-1.23 3.297-1.23.653 1.653.242 2.874.118 3.176.77.84 1.235 1.911 1.235 3.221 0 4.609-2.807 5.624-5.479 5.921.43.372.823 1.102.823 2.222v3.293c0 .319.192.694.801.576 4.765-1.589 8.199-6.086 8.199-11.386 0-6.627-5.373-12-12-12z" />
+            </svg>
+          </Button>
+        </TooltipTrigger>
+        <TooltipContent side="right">
+          <p>Report Bug</p>
+        </TooltipContent>
+      </Tooltip>
+
+      {/* Other Projects at bottom */}
+      <div className="mt-auto">
+        <Tooltip delayDuration={0}>
+          <TooltipTrigger asChild>
+            <Button
+              variant="ghost"
+              size="icon"
+              className="h-10 w-10"
+              onClick={() => openExternal("https://exyezed.cc/")}
+            >
+              <LayoutGrid className="h-5 w-5" />
+            </Button>
+          </TooltipTrigger>
+          <TooltipContent side="right">
+            <p>Other Projects</p>
+          </TooltipContent>
+        </Tooltip>
+      </div>
+    </div>
+  );
+}

frontend/src/components/SpectrumVisualization.tsx

@@ -0,0 +1,289 @@
+import { useEffect, useRef } from "react";
+import type { SpectrumData } from "@/types/api";
+
+interface SpectrumVisualizationProps {
+  sampleRate: number;
+  bitsPerSample: number;
+  duration: number;
+  spectrumData?: SpectrumData;
+}
+
+export function SpectrumVisualization({
+  sampleRate,
+  bitsPerSample,
+  duration,
+  spectrumData,
+}: SpectrumVisualizationProps) {
+  const canvasRef = useRef<HTMLCanvasElement>(null);
+
+  useEffect(() => {
+    const canvas = canvasRef.current;
+    if (!canvas) return;
+
+    const ctx = canvas.getContext("2d");
+    if (!ctx) return;
+
+    const width = canvas.width;
+    const height = canvas.height;
+
+    // Calculate margins for labels
+    const marginLeft = 70; // More space for Frequency label
+    const marginRight = 70; // Space for color bar
+    const marginTop = 30; // More space at top
+    const marginBottom = 65; // More space at bottom for Time label
+
+    const plotWidth = width - marginLeft - marginRight;
+    const plotHeight = height - marginTop - marginBottom;
+
+    // Black background
+    ctx.fillStyle = "#000000";
+    ctx.fillRect(0, 0, width, height);
+
+    // Calculate Nyquist frequency
+    const nyquistFreq = sampleRate / 2;
+
+    if (spectrumData) {
+      drawRealSpectrum(
+        ctx,
+        marginLeft,
+        marginTop,
+        plotWidth,
+        plotHeight,
+        spectrumData
+      );
+    }
+
+    // Draw axes, labels, and color bar
+    drawAxesAndLabels(ctx, marginLeft, marginTop, plotWidth, plotHeight, nyquistFreq, duration, sampleRate);
+    drawColorBar(ctx, marginLeft + plotWidth + 15, marginTop, 20, plotHeight);
+  }, [sampleRate, bitsPerSample, duration, spectrumData]);
+
+  const drawRealSpectrum = (
+    ctx: CanvasRenderingContext2D,
+    x: number,
+    y: number,
+    width: number,
+    height: number,
+    spectrum: SpectrumData
+  ) => {
+    const timeSlices = spectrum.time_slices;
+    if (timeSlices.length === 0) return;
+
+    const freqBins = timeSlices[0].magnitudes.length;
+    const nyquistFreq = spectrum.max_freq;
+
+    // Find min/max dB values
+    let minDB = 0;
+    let maxDB = -200;
+
+    timeSlices.forEach((slice) => {
+      slice.magnitudes.forEach((db) => {
+        if (db > maxDB) maxDB = db;
+        if (db < minDB && db > -200) minDB = db;
+      });
+    });
+
+    // Clamp range for better visualization
+    minDB = Math.max(minDB, maxDB - 90); // 90dB dynamic range
+    const dbRange = maxDB - minDB;
+
+    const sliceWidth = Math.ceil(width / timeSlices.length);
+
+    for (let t = 0; t < timeSlices.length; t++) {
+      const slice = timeSlices[t];
+      const xPos = x + (t / timeSlices.length) * width;
+
+      for (let f = 0; f < freqBins && f < slice.magnitudes.length; f++) {
+        const db = slice.magnitudes[f];
+
+        // Linear frequency scale
+        const freq = (f / freqBins) * nyquistFreq;
+        const freqRatio = freq / nyquistFreq;
+        
+        const yPos = y + height - (freqRatio * height);
+
+        // Calculate bin height
+        const nextFreq = ((f + 1) / freqBins) * nyquistFreq;
+        const nextFreqRatio = nextFreq / nyquistFreq;
+        const nextYPos = y + height - (nextFreqRatio * height);
+        
+        const binHeight = Math.max(1, Math.abs(yPos - nextYPos) + 1);
+
+        // Normalize intensity
+        const intensity = Math.max(0, Math.min(1, (db - minDB) / dbRange));
+
+        const color = getSpekColor(intensity);
+        ctx.fillStyle = color;
+        ctx.fillRect(xPos, nextYPos, sliceWidth, binHeight);
+      }
+    }
+  };
+
+  // Vibrant color scheme like Spek - NGEJERENG!
+  const getSpekColor = (intensity: number): string => {
+    if (intensity < 0.08) {
+      // Black to deep blue
+      const t = intensity / 0.08;
+      return `rgb(0, 0, ${Math.floor(t * 80)})`;
+    } else if (intensity < 0.18) {
+      // Deep blue to bright blue
+      const t = (intensity - 0.08) / 0.10;
+      return `rgb(${Math.floor(t * 50)}, ${Math.floor(t * 30)}, ${Math.floor(80 + t * 175)})`;
+    } else if (intensity < 0.28) {
+      // Blue to magenta/purple
+      const t = (intensity - 0.18) / 0.10;
+      return `rgb(${Math.floor(50 + t * 150)}, ${Math.floor(30 - t * 30)}, ${Math.floor(255 - t * 55)})`;
+    } else if (intensity < 0.40) {
+      // Magenta to bright red
+      const t = (intensity - 0.28) / 0.12;
+      return `rgb(${Math.floor(200 + t * 55)}, 0, ${Math.floor(200 - t * 200)})`;
+    } else if (intensity < 0.52) {
+      // Red to orange-red
+      const t = (intensity - 0.40) / 0.12;
+      return `rgb(255, ${Math.floor(t * 100)}, 0)`;
+    } else if (intensity < 0.65) {
+      // Orange-red to bright orange
+      const t = (intensity - 0.52) / 0.13;
+      return `rgb(255, ${Math.floor(100 + t * 80)}, 0)`;
+    } else if (intensity < 0.78) {
+      // Orange to yellow-orange
+      const t = (intensity - 0.65) / 0.13;
+      return `rgb(255, ${Math.floor(180 + t * 55)}, ${Math.floor(t * 30)})`;
+    } else if (intensity < 0.90) {
+      // Yellow-orange to bright yellow
+      const t = (intensity - 0.78) / 0.12;
+      return `rgb(255, ${Math.floor(235 + t * 20)}, ${Math.floor(30 + t * 100)})`;
+    } else {
+      // Yellow to white (hottest)
+      const t = (intensity - 0.90) / 0.10;
+      return `rgb(255, 255, ${Math.floor(130 + t * 125)})`;
+    }
+  };
+
+  const drawAxesAndLabels = (
+    ctx: CanvasRenderingContext2D,
+    x: number,
+    y: number,
+    width: number,
+    height: number,
+    nyquistFreq: number,
+    duration: number,
+    sampleRate: number
+  ) => {
+    // Frequency labels on Y-axis
+    ctx.fillStyle = "#CCCCCC";
+    ctx.font = "12px Arial";
+    ctx.textAlign = "right";
+    ctx.textBaseline = "middle";
+
+    // Generate frequency labels based on Nyquist
+    const freqLabels = generateFreqLabels(nyquistFreq);
+    
+    freqLabels.forEach(freq => {
+      if (freq <= nyquistFreq) {
+        const freqRatio = freq / nyquistFreq;
+        const yPos = y + height - (freqRatio * height);
+        const label = freq >= 1000 ? `${freq / 1000}k` : `${freq}`;
+        ctx.fillText(label, x - 8, yPos);
+      }
+    });
+
+    // "0" at bottom
+    ctx.fillText("0", x - 8, y + height);
+
+    // Time labels on X-axis
+    ctx.textAlign = "center";
+    ctx.textBaseline = "top";
+
+    const timeStep = getTimeStep(duration);
+    for (let t = 0; t <= duration; t += timeStep) {
+      const xPos = x + (t / duration) * width;
+      ctx.fillText(`${Math.round(t)}s`, xPos, y + height + 8);
+    }
+
+    // Axis titles
+    ctx.fillStyle = "#FFFFFF";
+    ctx.font = "13px Arial";
+
+    // Y-axis title: "Frequency (Hz)"
+    ctx.save();
+    ctx.translate(12, y + height / 2);
+    ctx.rotate(-Math.PI / 2);
+    ctx.textAlign = "center";
+    ctx.fillText("Frequency (Hz)", 0, 0);
+    ctx.restore();
+
+    // X-axis title: "Time (seconds)"
+    ctx.textAlign = "center";
+    ctx.fillText("Time (seconds)", x + width / 2, y + height + 35);
+
+    // Sample rate info in top right
+    ctx.textAlign = "right";
+    ctx.fillStyle = "#CCCCCC";
+    ctx.font = "12px Arial";
+    ctx.fillText(`Sample Rate: ${sampleRate} Hz`, x + width - 5, y - 3);
+  };
+
+  const generateFreqLabels = (nyquistFreq: number): number[] => {
+    if (nyquistFreq <= 24000) {
+      return [2000, 4000, 6000, 8000, 10000, 12000, 14000, 16000, 18000, 20000, 22000];
+    } else if (nyquistFreq <= 48000) {
+      return [5000, 10000, 15000, 20000, 25000, 30000, 35000, 40000, 45000];
+    } else if (nyquistFreq <= 96000) {
+      return [10000, 20000, 30000, 40000, 50000, 60000, 70000, 80000, 90000];
+    } else {
+      return [20000, 40000, 60000, 80000, 100000, 120000, 140000, 160000, 180000];
+    }
+  };
+
+  const getTimeStep = (duration: number): number => {
+    // Always use 30s intervals like the reference image
+    if (duration <= 60) return 15;
+    if (duration <= 120) return 30;
+    if (duration <= 300) return 30;
+    if (duration <= 600) return 60;
+    return 60;
+  };
+
+  const drawColorBar = (
+    ctx: CanvasRenderingContext2D,
+    x: number,
+    y: number,
+    width: number,
+    height: number
+  ) => {
+    // Draw gradient color bar
+    for (let i = 0; i < height; i++) {
+      const intensity = 1 - (i / height); // Top is high, bottom is low
+      const color = getSpekColor(intensity);
+      ctx.fillStyle = color;
+      ctx.fillRect(x, y + i, width, 1);
+    }
+
+    // Border around color bar
+    ctx.strokeStyle = "#666666";
+    ctx.lineWidth = 1;
+    ctx.strokeRect(x, y, width, height);
+
+    // Labels
+    ctx.fillStyle = "#FFFFFF";
+    ctx.font = "11px Arial";
+    ctx.textAlign = "left";
+    ctx.textBaseline = "middle";
+    
+    ctx.fillText("High", x + width + 5, y + 10);
+    ctx.fillText("Low", x + width + 5, y + height - 10);
+  };
+
+  return (
+    <div className="border border-white/10 rounded-lg overflow-hidden bg-black shadow-xl">
+      <canvas
+        ref={canvasRef}
+        width={1200}
+        height={600}
+        className="w-full h-auto"
+        style={{ imageRendering: "auto" }}
+      />
+    </div>
+  );
+}

frontend/src/components/TitleBar.tsx

@@ -1,10 +1,7 @@
-import { useState } from "react";
-import { X, Minus, Square } from "lucide-react";
+import { X, Minus, Maximize } from "lucide-react";
 import { WindowMinimise, WindowToggleMaximise, Quit } from "../../wailsjs/runtime/runtime";
 
 export function TitleBar() {
-  const [hoveredButton, setHoveredButton] = useState<string | null>(null);
-
   const handleMinimize = () => {
     WindowMinimise();
   };
@@ -21,48 +18,36 @@ export function TitleBar() {
     <>
       {/* Draggable area */}
       <div 
-        className="fixed top-0 left-0 right-0 h-12 z-40"
+        className="fixed top-0 left-14 right-0 h-10 z-40 bg-background/80 backdrop-blur-sm"
         style={{ "--wails-draggable": "drag" } as React.CSSProperties}
         onDoubleClick={handleMaximize}
       />
       
-      {/* Window control buttons */}
-      <div className="fixed top-4 left-4 z-50 flex gap-2">
-        <button
-          onClick={handleClose}
-          onMouseEnter={() => setHoveredButton("close")}
-          onMouseLeave={() => setHoveredButton(null)}
-          className="w-3 h-3 rounded-full bg-red-500 hover:bg-red-600 transition-colors flex items-center justify-center"
-          style={{ "--wails-draggable": "no-drag" } as React.CSSProperties}
-          aria-label="Close"
-        >
-          {hoveredButton === "close" && (
-            <X className="w-2 h-2 text-red-900" strokeWidth={3} />
-          )}
-        </button>
+      {/* Window control buttons - Windows style, right side */}
+      <div className="fixed top-1.5 right-2 z-50 flex h-7 gap-0.5">
         <button
           onClick={handleMinimize}
-          onMouseEnter={() => setHoveredButton("minimize")}
-          onMouseLeave={() => setHoveredButton(null)}
-          className="w-3 h-3 rounded-full bg-yellow-500 hover:bg-yellow-600 transition-colors flex items-center justify-center"
+          className="w-8 h-7 flex items-center justify-center hover:bg-muted transition-colors rounded"
           style={{ "--wails-draggable": "no-drag" } as React.CSSProperties}
           aria-label="Minimize"
         >
-          {hoveredButton === "minimize" && (
-            <Minus className="w-2 h-2 text-yellow-900" strokeWidth={3} />
-          )}
+          <Minus className="w-3.5 h-3.5" />
         </button>
         <button
           onClick={handleMaximize}
-          onMouseEnter={() => setHoveredButton("maximize")}
-          onMouseLeave={() => setHoveredButton(null)}
-          className="w-3 h-3 rounded-full bg-green-500 hover:bg-green-600 transition-colors flex items-center justify-center"
+          className="w-8 h-7 flex items-center justify-center hover:bg-muted transition-colors rounded"
           style={{ "--wails-draggable": "no-drag" } as React.CSSProperties}
           aria-label="Maximize"
         >
-          {hoveredButton === "maximize" && (
-            <Square className="w-1.5 h-1.5 text-green-900" strokeWidth={3} />
-          )}
+          <Maximize className="w-3.5 h-3.5" />
+        </button>
+        <button
+          onClick={handleClose}
+          className="w-8 h-7 flex items-center justify-center hover:bg-destructive hover:text-white transition-colors rounded"
+          style={{ "--wails-draggable": "no-drag" } as React.CSSProperties}
+          aria-label="Close"
+        >
+          <X className="w-3.5 h-3.5" />
         </button>
       </div>
     </>

frontend/src/components/TrackInfo.tsx

@@ -1,8 +1,15 @@
+import { useState } from "react";
 import { Button } from "@/components/ui/button";
 import { Card, CardContent } from "@/components/ui/card";
-import { Download, FolderOpen, CheckCircle, XCircle } from "lucide-react";
+import { Download, FolderOpen, CheckCircle, XCircle, FileText, FileCheck, Globe, ImageDown } from "lucide-react";
 import { Spinner } from "@/components/ui/spinner";
-import type { TrackMetadata } from "@/types/api";
+import {
+  Tooltip,
+  TooltipContent,
+  TooltipTrigger,
+} from "@/components/ui/tooltip";
+import type { TrackMetadata, TrackAvailability } from "@/types/api";
+import { TidalIcon, DeezerIcon, QobuzIcon, AmazonIcon } from "./PlatformIcons";
 
 interface TrackInfoProps {
   track: TrackMetadata & { album_name: string; release_date: string };
@@ -10,7 +17,18 @@ interface TrackInfoProps {
   downloadingTrack: string | null;
   isDownloaded: boolean;
   isFailed: boolean;
+  isSkipped: boolean;
+  downloadingLyricsTrack?: string | null;
+  downloadedLyrics?: boolean;
+  failedLyrics?: boolean;
+  skippedLyrics?: boolean;
+  checkingAvailability?: boolean;
+  availability?: TrackAvailability;
+  downloadingCover?: boolean;
   onDownload: (isrc: string, name: string, artists: string, albumName?: string, spotifyId?: string) => 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;
   onOpenFolder: () => void;
 }
 
@@ -20,30 +38,72 @@ export function TrackInfo({
   downloadingTrack,
   isDownloaded,
   isFailed,
+  isSkipped,
+  downloadingLyricsTrack,
+  downloadedLyrics,
+  failedLyrics,
+  skippedLyrics,
+  checkingAvailability,
+  availability,
+  downloadingCover,
   onDownload,
+  onDownloadLyrics,
+  onCheckAvailability,
+  onDownloadCover,
   onOpenFolder,
 }: TrackInfoProps) {
+  const [isHoveringCover, setIsHoveringCover] = useState(false);
+
   return (
     <Card>
       <CardContent className="px-6">
         <div className="flex gap-6 items-start">
+          <div 
+            className="shrink-0 relative"
+            onMouseEnter={() => setIsHoveringCover(true)}
+            onMouseLeave={() => setIsHoveringCover(false)}
+          >
             {track.images && (
+              <>
                 <img
                   src={track.images}
                   alt={track.name}
-              className="w-48 h-48 rounded-md shadow-lg object-cover shrink-0"
+                  className="w-48 h-48 rounded-md shadow-lg object-cover"
                 />
+                {isHoveringCover && onDownloadCover && (
+                  <div className="absolute inset-0 bg-black/50 rounded-md flex items-center justify-center">
+                    <Tooltip>
+                      <TooltipTrigger asChild>
+                        <Button
+                          size="icon"
+                          variant="secondary"
+                          className="cursor-pointer"
+                          onClick={() => onDownloadCover(track.images, track.name, track.artists, track.album_name)}
+                          disabled={downloadingCover}
+                        >
+                          {downloadingCover ? <Spinner /> : <ImageDown className="h-5 w-5" />}
+                        </Button>
+                      </TooltipTrigger>
+                      <TooltipContent>
+                        <p>Download Cover</p>
+                      </TooltipContent>
+                    </Tooltip>
+                  </div>
                 )}
+              </>
+            )}
+          </div>
           <div className="flex-1 space-y-4 min-w-0">
             <div className="space-y-1">
               <div className="flex items-center gap-3">
                 <h1 className="text-3xl font-bold wrap-break-word">{track.name}</h1>
-                {isDownloaded && (
+                {isSkipped ? (
+                  <FileCheck className="h-6 w-6 text-yellow-500 shrink-0" />
+                ) : isDownloaded ? (
                   <CheckCircle className="h-6 w-6 text-green-500 shrink-0" />
-                )}
-                {isFailed && (
+                ) : isFailed ? (
                   <XCircle className="h-6 w-6 text-red-500 shrink-0" />
-                )}
+                ) : null}
               </div>
               <p className="text-lg text-muted-foreground">{track.artists}</p>
             </div>
@@ -58,7 +118,7 @@ export function TrackInfo({
               </div>
             </div>
             {track.isrc && (
-              <div className="flex gap-2">
+              <div className="flex gap-2 flex-wrap">
                 <Button
                   onClick={() => onDownload(track.isrc, track.name, track.artists, track.album_name, track.spotify_id)}
                   disabled={isDownloading || downloadingTrack === track.isrc}
@@ -72,6 +132,63 @@ export function TrackInfo({
                     </>
                   )}
                 </Button>
+                {track.spotify_id && onDownloadLyrics && (
+                  <Tooltip>
+                    <TooltipTrigger asChild>
+                      <Button
+                        onClick={() => onDownloadLyrics(track.spotify_id!, track.name, track.artists, track.album_name)}
+                        variant="outline"
+                        disabled={downloadingLyricsTrack === track.spotify_id}
+                      >
+                        {downloadingLyricsTrack === track.spotify_id ? (
+                          <Spinner />
+                        ) : skippedLyrics ? (
+                          <FileCheck className="h-4 w-4 text-yellow-500" />
+                        ) : downloadedLyrics ? (
+                          <CheckCircle className="h-4 w-4 text-green-500" />
+                        ) : failedLyrics ? (
+                          <XCircle className="h-4 w-4 text-red-500" />
+                        ) : (
+                          <FileText className="h-4 w-4" />
+                        )}
+                      </Button>
+                    </TooltipTrigger>
+                    <TooltipContent>
+                      <p>Download Lyric</p>
+                    </TooltipContent>
+                  </Tooltip>
+                )}
+                {track.spotify_id && onCheckAvailability && (
+                  <Tooltip>
+                    <TooltipTrigger asChild>
+                      <Button
+                        onClick={() => onCheckAvailability(track.spotify_id!, track.isrc)}
+                        variant="outline"
+                        disabled={checkingAvailability}
+                      >
+                        {checkingAvailability ? (
+                          <Spinner />
+                        ) : availability ? (
+                          <CheckCircle className="h-4 w-4 text-green-500" />
+                        ) : (
+                          <Globe className="h-4 w-4" />
+                        )}
+                      </Button>
+                    </TooltipTrigger>
+                    <TooltipContent>
+                      {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>
+                      ) : (
+                        <p>Check Availability</p>
+                      )}
+                    </TooltipContent>
+                  </Tooltip>
+                )}
                 {isDownloaded && (
                   <Button onClick={onOpenFolder} variant="outline">
                     <FolderOpen className="h-4 w-4" />

frontend/src/components/TrackList.tsx

@@ -1,7 +1,12 @@
 import { Button } from "@/components/ui/button";
 import { Checkbox } from "@/components/ui/checkbox";
-import { Download, CheckCircle, XCircle, SkipForward } from "lucide-react";
+import { Download, CheckCircle, XCircle, FileCheck, FileText, Globe, ImageDown } from "lucide-react";
 import { Spinner } from "@/components/ui/spinner";
+import {
+  Tooltip,
+  TooltipContent,
+  TooltipTrigger,
+} from "@/components/ui/tooltip";
 import {
   Pagination,
   PaginationContent,
@@ -10,7 +15,8 @@ import {
   PaginationNext,
   PaginationPrevious,
 } from "@/components/ui/pagination";
-import type { TrackMetadata } from "@/types/api";
+import type { TrackMetadata, TrackAvailability } from "@/types/api";
+import { TidalIcon, DeezerIcon, QobuzIcon, AmazonIcon } from "./PlatformIcons";
 
 interface TrackListProps {
   tracks: TrackMetadata[];
@@ -28,9 +34,25 @@ interface TrackListProps {
   hideAlbumColumn?: boolean;
   folderName?: string;
   isArtistDiscography?: boolean;
+  // Lyrics props
+  downloadedLyrics?: Set<string>;
+  failedLyrics?: Set<string>;
+  skippedLyrics?: Set<string>;
+  downloadingLyricsTrack?: string | null;
+  // Availability props
+  checkingAvailabilityTrack?: string | null;
+  availabilityMap?: Map<string, TrackAvailability>;
+  // Cover props
+  downloadedCovers?: Set<string>;
+  failedCovers?: Set<string>;
+  skippedCovers?: Set<string>;
+  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;
+  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;
   onPageChange: (page: number) => void;
   onAlbumClick?: (album: { id: string; name: string; external_urls: string }) => void;
   onArtistClick?: (artist: { id: string; name: string; external_urls: string }) => void;
@@ -53,9 +75,22 @@ export function TrackList({
   hideAlbumColumn = false,
   folderName,
   isArtistDiscography = false,
+  downloadedLyrics,
+  failedLyrics,
+  skippedLyrics,
+  downloadingLyricsTrack,
+  checkingAvailabilityTrack,
+  availabilityMap,
+  downloadedCovers,
+  failedCovers,
+  skippedCovers,
+  downloadingCoverTrack,
   onToggleTrack,
   onToggleSelectAll,
   onDownloadTrack,
+  onDownloadLyrics,
+  onCheckAvailability,
+  onDownloadCover,
   onPageChange,
   onAlbumClick,
   onArtistClick,
@@ -186,7 +221,7 @@ export function TrackList({
                             <span className="font-medium">{track.name}</span>
                           )}
                           {skippedTracks.has(track.isrc) ? (
-                            <SkipForward className="h-4 w-4 text-yellow-500 shrink-0" />
+                            <FileCheck className="h-4 w-4 text-yellow-500 shrink-0" />
                           ) : downloadedTracks.has(track.isrc) ? (
                             <CheckCircle className="h-4 w-4 text-green-500 shrink-0" />
                           ) : failedTracks.has(track.isrc) ? (
@@ -260,25 +295,137 @@ export function TrackList({
                     {formatDuration(track.duration_ms)}
                   </td>
                   <td className="p-4 align-middle text-center">
+                    <div className="flex items-center justify-center gap-1">
                       {track.isrc && (
+                        <Tooltip>
+                          <TooltipTrigger asChild>
                             <Button
                               onClick={() =>
                                 onDownloadTrack(track.isrc, track.name, track.artists, track.album_name, track.spotify_id, folderName, isArtistDiscography)
                               }
                               size="sm"
-                        className="gap-1.5"
                               disabled={isDownloading || downloadingTrack === track.isrc}
                             >
                               {downloadingTrack === track.isrc ? (
                                 <Spinner />
+                              ) : skippedTracks.has(track.isrc) ? (
+                                <FileCheck className="h-4 w-4" />
+                              ) : downloadedTracks.has(track.isrc) ? (
+                                <CheckCircle className="h-4 w-4" />
+                              ) : failedTracks.has(track.isrc) ? (
+                                <XCircle className="h-4 w-4" />
                               ) : (
-                          <>
                                 <Download className="h-4 w-4" />
-                            Download
-                          </>
                               )}
                             </Button>
+                          </TooltipTrigger>
+                          <TooltipContent>
+                            {downloadingTrack === track.isrc ? (
+                              <p>Downloading...</p>
+                            ) : skippedTracks.has(track.isrc) ? (
+                              <p>Already exists</p>
+                            ) : downloadedTracks.has(track.isrc) ? (
+                              <p>Downloaded</p>
+                            ) : failedTracks.has(track.isrc) ? (
+                              <p>Failed</p>
+                            ) : (
+                              <p>Download Track</p>
                             )}
+                          </TooltipContent>
+                        </Tooltip>
+                      )}
+                      {track.spotify_id && onDownloadLyrics && (
+                        <Tooltip>
+                          <TooltipTrigger asChild>
+                            <Button
+                              onClick={() =>
+                                onDownloadLyrics(track.spotify_id!, track.name, track.artists, track.album_name, folderName, isArtistDiscography, startIndex + index + 1)
+                              }
+                              size="sm"
+                              variant="outline"
+                              disabled={downloadingLyricsTrack === track.spotify_id}
+                            >
+                              {downloadingLyricsTrack === track.spotify_id ? (
+                                <Spinner />
+                              ) : skippedLyrics?.has(track.spotify_id) ? (
+                                <FileCheck className="h-4 w-4 text-yellow-500" />
+                              ) : downloadedLyrics?.has(track.spotify_id) ? (
+                                <CheckCircle className="h-4 w-4 text-green-500" />
+                              ) : failedLyrics?.has(track.spotify_id) ? (
+                                <XCircle className="h-4 w-4 text-red-500" />
+                              ) : (
+                                <FileText className="h-4 w-4" />
+                              )}
+                            </Button>
+                          </TooltipTrigger>
+                          <TooltipContent>
+                            <p>Download Lyric</p>
+                          </TooltipContent>
+                        </Tooltip>
+                      )}
+                      {track.images && onDownloadCover && (
+                        <Tooltip>
+                          <TooltipTrigger asChild>
+                            <Button
+                              onClick={() => {
+                                const trackId = track.spotify_id || `${track.name}-${track.artists}`;
+                                onDownloadCover(track.images, track.name, track.artists, track.album_name, folderName, isArtistDiscography, startIndex + index + 1, trackId);
+                              }}
+                              size="sm"
+                              variant="outline"
+                              disabled={downloadingCoverTrack === (track.spotify_id || `${track.name}-${track.artists}`)}
+                            >
+                              {downloadingCoverTrack === (track.spotify_id || `${track.name}-${track.artists}`) ? (
+                                <Spinner />
+                              ) : skippedCovers?.has(track.spotify_id || `${track.name}-${track.artists}`) ? (
+                                <FileCheck className="h-4 w-4 text-yellow-500" />
+                              ) : downloadedCovers?.has(track.spotify_id || `${track.name}-${track.artists}`) ? (
+                                <CheckCircle className="h-4 w-4 text-green-500" />
+                              ) : failedCovers?.has(track.spotify_id || `${track.name}-${track.artists}`) ? (
+                                <XCircle className="h-4 w-4 text-red-500" />
+                              ) : (
+                                <ImageDown className="h-4 w-4" />
+                              )}
+                            </Button>
+                          </TooltipTrigger>
+                          <TooltipContent>
+                            <p>Download Cover</p>
+                          </TooltipContent>
+                        </Tooltip>
+                      )}
+                      {track.spotify_id && onCheckAvailability && (
+                        <Tooltip>
+                          <TooltipTrigger asChild>
+                            <Button
+                              onClick={() => onCheckAvailability(track.spotify_id!, track.isrc)}
+                              size="sm"
+                              variant="outline"
+                              disabled={checkingAvailabilityTrack === track.spotify_id}
+                            >
+                              {checkingAvailabilityTrack === track.spotify_id ? (
+                                <Spinner />
+                              ) : availabilityMap?.has(track.spotify_id) ? (
+                                <CheckCircle className="h-4 w-4 text-green-500" />
+                              ) : (
+                                <Globe className="h-4 w-4" />
+                              )}
+                            </Button>
+                          </TooltipTrigger>
+                          <TooltipContent>
+                            {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>
+                            ) : (
+                              <p>Check Availability</p>
+                            )}
+                          </TooltipContent>
+                        </Tooltip>
+                      )}
+                    </div>
                   </td>
                 </tr>
               ))}

frontend/src/components/ui/alert.tsx

@@ -1,66 +0,0 @@
-import * as React from "react"
-import { cva, type VariantProps } from "class-variance-authority"
-
-import { cn } from "@/lib/utils"
-
-const alertVariants = cva(
-  "relative w-full rounded-lg border px-4 py-3 text-sm grid has-[>svg]:grid-cols-[calc(var(--spacing)*4)_1fr] grid-cols-[0_1fr] has-[>svg]:gap-x-3 gap-y-0.5 items-start [&>svg]:size-4 [&>svg]:translate-y-0.5 [&>svg]:text-current",
-  {
-    variants: {
-      variant: {
-        default: "bg-card text-card-foreground",
-        destructive:
-          "text-destructive bg-card [&>svg]:text-current *:data-[slot=alert-description]:text-destructive/90",
-      },
-    },
-    defaultVariants: {
-      variant: "default",
-    },
-  }
-)
-
-function Alert({
-  className,
-  variant,
-  ...props
-}: React.ComponentProps<"div"> & VariantProps<typeof alertVariants>) {
-  return (
-    <div
-      data-slot="alert"
-      role="alert"
-      className={cn(alertVariants({ variant }), className)}
-      {...props}
-    />
-  )
-}
-
-function AlertTitle({ className, ...props }: React.ComponentProps<"div">) {
-  return (
-    <div
-      data-slot="alert-title"
-      className={cn(
-        "col-start-2 line-clamp-1 min-h-4 font-medium tracking-tight",
-        className
-      )}
-      {...props}
-    />
-  )
-}
-
-function AlertDescription({
-  className,
-  ...props
-}: React.ComponentProps<"div">) {
-  return (
-    <div
-      data-slot="alert-description"
-      className={cn(
-        "text-muted-foreground col-start-2 grid justify-items-start gap-1 text-sm [&_p]:leading-relaxed",
-        className
-      )}
-      {...props}
-    />
-  )
-}
-
-export { Alert, AlertTitle, AlertDescription }

frontend/src/components/ui/dialog.tsx

@@ -60,7 +60,7 @@ function DialogContent({
       <DialogPrimitive.Content
         data-slot="dialog-content"
         className={cn(
-          "bg-background data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 fixed top-[50%] left-[50%] z-50 grid w-full max-w-[calc(100%-2rem)] translate-x-[-50%] translate-y-[-50%] gap-4 rounded-lg border p-6 shadow-lg duration-200 sm:max-w-lg",
+          "bg-background data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 fixed top-[50%] left-[50%] z-50 grid w-full max-w-[calc(100%-2rem)] translate-x-[-50%] translate-y-[-50%] gap-4 rounded-lg border p-6 shadow-lg duration-200",
           className
         )}
         {...props}

frontend/src/components/ui/input-with-context.tsx

@@ -32,7 +32,7 @@ const InputWithContext = React.forwardRef<HTMLInputElement, InputWithContextProp
       setHasSelection(start !== end);
     };
 
-    // Check clipboard permission
+    // Check clipboard permission when user explicitly opens the context menu.
     const checkClipboard = async () => {
       try {
         const text = await navigator.clipboard.readText();
@@ -42,10 +42,6 @@ const InputWithContext = React.forwardRef<HTMLInputElement, InputWithContextProp
       }
     };
 
-    React.useEffect(() => {
-      checkClipboard();
-    }, []);
-
     const handleCut = async () => {
       const input = inputRef.current;
       if (!input) return;
@@ -156,7 +152,13 @@ const InputWithContext = React.forwardRef<HTMLInputElement, InputWithContextProp
     };
 
     return (
-      <ContextMenu onOpenChange={checkClipboard}>
+      <ContextMenu
+        onOpenChange={(open) => {
+          if (open) {
+            checkClipboard();
+          }
+        }}
+      >
         <ContextMenuTrigger asChild>
           <Input 
             ref={inputRef} 

frontend/src/components/ui/scroll-area.tsx

@@ -0,0 +1,46 @@
+import * as React from "react"
+import * as ScrollAreaPrimitive from "@radix-ui/react-scroll-area"
+
+import { cn } from "@/lib/utils"
+
+const ScrollArea = React.forwardRef<
+  React.ElementRef<typeof ScrollAreaPrimitive.Root>,
+  React.ComponentPropsWithoutRef<typeof ScrollAreaPrimitive.Root>
+>(({ className, children, ...props }, ref) => (
+  <ScrollAreaPrimitive.Root
+    ref={ref}
+    className={cn("relative overflow-hidden", className)}
+    {...props}
+  >
+    <ScrollAreaPrimitive.Viewport className="h-full w-full rounded-[inherit]">
+      {children}
+    </ScrollAreaPrimitive.Viewport>
+    <ScrollBar />
+    <ScrollAreaPrimitive.Corner />
+  </ScrollAreaPrimitive.Root>
+))
+ScrollArea.displayName = ScrollAreaPrimitive.Root.displayName
+
+const ScrollBar = React.forwardRef<
+  React.ElementRef<typeof ScrollAreaPrimitive.ScrollAreaScrollbar>,
+  React.ComponentPropsWithoutRef<typeof ScrollAreaPrimitive.ScrollAreaScrollbar>
+>(({ className, orientation = "vertical", ...props }, ref) => (
+  <ScrollAreaPrimitive.ScrollAreaScrollbar
+    ref={ref}
+    orientation={orientation}
+    className={cn(
+      "flex touch-none select-none transition-colors",
+      orientation === "vertical" &&
+        "h-full w-2.5 border-l border-l-transparent p-[1px]",
+      orientation === "horizontal" &&
+        "h-2.5 flex-col border-t border-t-transparent p-[1px]",
+      className
+    )}
+    {...props}
+  >
+    <ScrollAreaPrimitive.ScrollAreaThumb className="relative flex-1 rounded-full bg-border" />
+  </ScrollAreaPrimitive.ScrollAreaScrollbar>
+))
+ScrollBar.displayName = ScrollAreaPrimitive.ScrollAreaScrollbar.displayName
+
+export { ScrollArea, ScrollBar }

frontend/src/components/ui/sonner.tsx

@@ -36,6 +36,7 @@ const Toaster = ({ ...props }: ToasterProps) => {
           "--normal-text": "var(--popover-foreground)",
           "--normal-border": "var(--border)",
           "--border-radius": "var(--radius)",
+          left: "calc(56px + 1rem)",
         } as React.CSSProperties
       }
       {...props}

frontend/src/components/ui/switch.tsx

@@ -0,0 +1,31 @@
+"use client"
+
+import * as React from "react"
+import * as SwitchPrimitive from "@radix-ui/react-switch"
+
+import { cn } from "@/lib/utils"
+
+function Switch({
+  className,
+  ...props
+}: React.ComponentProps<typeof SwitchPrimitive.Root>) {
+  return (
+    <SwitchPrimitive.Root
+      data-slot="switch"
+      className={cn(
+        "peer data-[state=checked]:bg-primary data-[state=unchecked]:bg-input focus-visible:border-ring focus-visible:ring-ring/50 inline-flex h-5 w-9 shrink-0 cursor-pointer items-center rounded-full border border-transparent shadow-xs transition-all outline-none focus-visible:ring-[3px] disabled:cursor-not-allowed disabled:opacity-50",
+        className
+      )}
+      {...props}
+    >
+      <SwitchPrimitive.Thumb
+        data-slot="switch-thumb"
+        className={cn(
+          "pointer-events-none block size-4 rounded-full shadow-lg ring-0 transition-transform data-[state=checked]:translate-x-4 data-[state=unchecked]:translate-x-0 data-[state=checked]:bg-primary-foreground data-[state=unchecked]:bg-background"
+        )}
+      />
+    </SwitchPrimitive.Root>
+  )
+}
+
+export { Switch }

frontend/src/components/ui/textarea.tsx

@@ -1,18 +0,0 @@
-import * as React from "react"
-
-import { cn } from "@/lib/utils"
-
-function Textarea({ className, ...props }: React.ComponentProps<"textarea">) {
-  return (
-    <textarea
-      data-slot="textarea"
-      className={cn(
-        "border-input placeholder:text-muted-foreground focus-visible:border-ring focus-visible:ring-ring/50 aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive dark:bg-input/30 flex field-sizing-content min-h-16 w-full rounded-md border bg-transparent px-3 py-2 text-base shadow-xs transition-[color,box-shadow] outline-none focus-visible:ring-[3px] disabled:cursor-not-allowed disabled:opacity-50 md:text-sm",
-        className
-      )}
-      {...props}
-    />
-  )
-}
-
-export { Textarea }

frontend/src/hooks/useAudioAnalysis.ts

@@ -0,0 +1,60 @@
+import { useState, useCallback } 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";
+
+export function useAudioAnalysis() {
+  const [analyzing, setAnalyzing] = useState(false);
+  const [result, setResult] = useState<AnalysisResult | null>(null);
+  const [error, setError] = useState<string | null>(null);
+
+  const analyzeFile = useCallback(async (filePath: string) => {
+    if (!filePath) {
+      setError("No file path provided");
+      return null;
+    }
+
+    setAnalyzing(true);
+    setError(null);
+    setResult(null);
+
+    try {
+      logger.info(`Analyzing audio file: ${filePath}`);
+      const startTime = Date.now();
+
+      const response = await AnalyzeTrack(filePath);
+      const analysisResult: AnalysisResult = JSON.parse(response);
+
+      const elapsed = ((Date.now() - startTime) / 1000).toFixed(2);
+      logger.success(`Audio analysis completed in ${elapsed}s`);
+
+      setResult(analysisResult);
+
+      return analysisResult;
+    } catch (err) {
+      const errorMessage = err instanceof Error ? err.message : "Failed to analyze audio file";
+      logger.error(`Analysis error: ${errorMessage}`);
+      setError(errorMessage);
+      toast.error("Audio Analysis Failed", {
+        description: errorMessage,
+      });
+      return null;
+    } finally {
+      setAnalyzing(false);
+    }
+  }, []);
+
+  const clearResult = useCallback(() => {
+    setResult(null);
+    setError(null);
+  }, []);
+
+  return {
+    analyzing,
+    result,
+    error,
+    analyzeFile,
+    clearResult,
+  };
+}

frontend/src/hooks/useAvailability.ts

@@ -0,0 +1,69 @@
+import { useState, useCallback } from "react";
+import { CheckTrackAvailability } from "../../wailsjs/go/main/App";
+import type { TrackAvailability } from "@/types/api";
+import { logger } from "@/lib/logger";
+
+export function useAvailability() {
+  const [checking, setChecking] = useState(false);
+  const [checkingTrackId, setCheckingTrackId] = useState<string | null>(null);
+  const [availabilityMap, setAvailabilityMap] = useState<Map<string, TrackAvailability>>(new Map());
+  const [error, setError] = useState<string | null>(null);
+
+  const checkAvailability = useCallback(async (spotifyId: string, isrc?: string) => {
+    if (!spotifyId) {
+      setError("No Spotify ID provided");
+      return null;
+    }
+
+    // Check if already cached
+    if (availabilityMap.has(spotifyId)) {
+      return availabilityMap.get(spotifyId)!;
+    }
+
+    setChecking(true);
+    setCheckingTrackId(spotifyId);
+    setError(null);
+
+    try {
+      logger.info(`Checking availability for track: ${spotifyId}`);
+      const response = await CheckTrackAvailability(spotifyId, isrc || "");
+      const availability: TrackAvailability = JSON.parse(response);
+
+      setAvailabilityMap((prev) => {
+        const newMap = new Map(prev);
+        newMap.set(spotifyId, availability);
+        return newMap;
+      });
+
+      logger.success(`Availability check completed for ${spotifyId}`);
+      return availability;
+    } catch (err) {
+      const errorMessage = err instanceof Error ? err.message : "Failed to check availability";
+      logger.error(`Availability check error: ${errorMessage}`);
+      setError(errorMessage);
+      return null;
+    } finally {
+      setChecking(false);
+      setCheckingTrackId(null);
+    }
+  }, [availabilityMap]);
+
+  const getAvailability = useCallback((spotifyId: string) => {
+    return availabilityMap.get(spotifyId);
+  }, [availabilityMap]);
+
+  const clearAvailability = useCallback(() => {
+    setAvailabilityMap(new Map());
+    setError(null);
+  }, []);
+
+  return {
+    checking,
+    checkingTrackId,
+    availabilityMap,
+    error,
+    checkAvailability,
+    getAvailability,
+    clearAvailability,
+  };
+}

frontend/src/hooks/useCover.ts

@@ -0,0 +1,218 @@
+import { useState, useRef } from "react";
+import { downloadCover } from "@/lib/api";
+import { getSettings } 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 useCover() {
+  const [downloadingCover, setDownloadingCover] = useState(false);
+  const [downloadingCoverTrack, setDownloadingCoverTrack] = useState<string | null>(null);
+  const [downloadedCovers, setDownloadedCovers] = useState<Set<string>>(new Set());
+  const [failedCovers, setFailedCovers] = useState<Set<string>>(new Set());
+  const [skippedCovers, setSkippedCovers] = useState<Set<string>>(new Set());
+  const [isBulkDownloadingCovers, setIsBulkDownloadingCovers] = useState(false);
+  const [coverDownloadProgress, setCoverDownloadProgress] = useState(0);
+  const stopBulkDownloadRef = useRef(false);
+
+  const handleDownloadCover = async (
+    coverUrl: string,
+    trackName: string,
+    artistName: string,
+    albumName?: string,
+    playlistName?: string,
+    isArtistDiscography?: boolean,
+    position?: number,
+    trackId?: string
+  ) => {
+    if (!coverUrl) {
+      toast.error("No cover URL found for this track");
+      return;
+    }
+
+    const id = trackId || `${trackName}-${artistName}`;
+    logger.info(`downloading cover: ${trackName} - ${artistName}`);
+    const settings = getSettings();
+    setDownloadingCover(true);
+    setDownloadingCoverTrack(id);
+
+    try {
+      const os = settings.operatingSystem;
+      let outputDir = settings.downloadPath;
+
+      // Build output path similar to audio download
+      if (playlistName) {
+        outputDir = joinPath(os, outputDir, sanitizePath(playlistName, os));
+
+        if (isArtistDiscography) {
+          if (settings.albumSubfolder && albumName) {
+            outputDir = joinPath(os, outputDir, sanitizePath(albumName, os));
+          }
+        } else {
+          if (settings.artistSubfolder && artistName) {
+            outputDir = joinPath(os, outputDir, sanitizePath(artistName, os));
+          }
+          if (settings.albumSubfolder && albumName) {
+            outputDir = joinPath(os, outputDir, sanitizePath(albumName, os));
+          }
+        }
+      }
+
+      const response = await downloadCover({
+        cover_url: coverUrl,
+        track_name: trackName,
+        artist_name: artistName,
+        output_dir: outputDir,
+        filename_format: settings.filenameFormat,
+        track_number: settings.trackNumber,
+        position: position || 0,
+      });
+
+      if (response.success) {
+        if (response.already_exists) {
+          toast.info("Cover file already exists");
+          setSkippedCovers((prev) => new Set(prev).add(id));
+        } else {
+          toast.success("Cover downloaded successfully");
+          setDownloadedCovers((prev) => new Set(prev).add(id));
+        }
+        setFailedCovers((prev) => {
+          const newSet = new Set(prev);
+          newSet.delete(id);
+          return newSet;
+        });
+      } else {
+        toast.error(response.error || "Failed to download cover");
+        setFailedCovers((prev) => new Set(prev).add(id));
+      }
+    } catch (err) {
+      toast.error(err instanceof Error ? err.message : "Failed to download cover");
+      setFailedCovers((prev) => new Set(prev).add(id));
+    } finally {
+      setDownloadingCover(false);
+      setDownloadingCoverTrack(null);
+    }
+  };
+
+  const handleDownloadAllCovers = async (
+    tracks: TrackMetadata[],
+    playlistName?: string,
+    isArtistDiscography?: boolean
+  ) => {
+    if (tracks.length === 0) {
+      toast.error("No tracks to download covers");
+      return;
+    }
+
+    const settings = getSettings();
+    setIsBulkDownloadingCovers(true);
+    setCoverDownloadProgress(0);
+    stopBulkDownloadRef.current = false;
+
+    let completed = 0;
+    let success = 0;
+    let skipped = 0;
+    let failed = 0;
+
+    for (let i = 0; i < tracks.length; i++) {
+      if (stopBulkDownloadRef.current) {
+        toast.info("Cover download stopped");
+        break;
+      }
+
+      const track = tracks[i];
+      if (!track.images) {
+        completed++;
+        setCoverDownloadProgress(Math.round((completed / tracks.length) * 100));
+        continue;
+      }
+
+      const id = track.spotify_id || `${track.name}-${track.artists}`;
+      setDownloadingCoverTrack(id);
+
+      try {
+        const os = settings.operatingSystem;
+        let outputDir = settings.downloadPath;
+
+        if (playlistName) {
+          outputDir = joinPath(os, outputDir, sanitizePath(playlistName, os));
+
+          if (isArtistDiscography) {
+            if (settings.albumSubfolder && track.album_name) {
+              outputDir = joinPath(os, outputDir, sanitizePath(track.album_name, 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));
+            }
+          }
+        }
+
+        const response = await downloadCover({
+          cover_url: track.images,
+          track_name: track.name,
+          artist_name: track.artists,
+          output_dir: outputDir,
+          filename_format: settings.filenameFormat,
+          track_number: settings.trackNumber,
+          position: i + 1,
+        });
+
+        if (response.success) {
+          if (response.already_exists) {
+            skipped++;
+            setSkippedCovers((prev) => new Set(prev).add(id));
+          } else {
+            success++;
+            setDownloadedCovers((prev) => new Set(prev).add(id));
+          }
+        } else {
+          failed++;
+          setFailedCovers((prev) => new Set(prev).add(id));
+        }
+      } catch {
+        failed++;
+        setFailedCovers((prev) => new Set(prev).add(id));
+      }
+
+      completed++;
+      setCoverDownloadProgress(Math.round((completed / tracks.length) * 100));
+    }
+
+    setDownloadingCoverTrack(null);
+    setIsBulkDownloadingCovers(false);
+    setCoverDownloadProgress(0);
+
+    if (!stopBulkDownloadRef.current) {
+      toast.success(`Covers: ${success} downloaded, ${skipped} skipped, ${failed} failed`);
+    }
+  };
+
+  const handleStopCoverDownload = () => {
+    stopBulkDownloadRef.current = true;
+  };
+
+  const resetCoverState = () => {
+    setDownloadedCovers(new Set());
+    setFailedCovers(new Set());
+    setSkippedCovers(new Set());
+  };
+
+  return {
+    downloadingCover,
+    downloadingCoverTrack,
+    downloadedCovers,
+    failedCovers,
+    skippedCovers,
+    isBulkDownloadingCovers,
+    coverDownloadProgress,
+    handleDownloadCover,
+    handleDownloadAllCovers,
+    handleStopCoverDownload,
+    resetCoverState,
+  };
+}

frontend/src/hooks/useDownload.ts

@@ -29,7 +29,8 @@ export function useDownload() {
     playlistName?: string,
     isArtistDiscography?: boolean,
     position?: number,
-    spotifyId?: string
+    spotifyId?: string,
+    durationMs?: number
   ) => {
     let service = settings.downloader;
 
@@ -59,6 +60,10 @@ export function useDownload() {
       }
     }
 
+    // Always add item to queue before downloading
+    const { AddToDownloadQueue } = await import("../../wailsjs/go/main/App");
+    const itemID = await AddToDownloadQueue(isrc, trackName || "", artistName || "", albumName || "");
+
     if (service === "auto") {
       // Get all streaming URLs once from song.link API
       let streamingURLs: any = null;
@@ -72,6 +77,9 @@ export function useDownload() {
         }
       }
 
+      // Convert duration from ms to seconds for backend
+      const durationSeconds = durationMs ? Math.round(durationMs / 1000) : undefined;
+
       // Try Tidal first
       if (streamingURLs?.tidal_url) {
         try {
@@ -90,6 +98,8 @@ export function useDownload() {
             use_album_track_number: useAlbumTrackNumber,
             spotify_id: spotifyId,
             service_url: streamingURLs.tidal_url,
+            duration: durationSeconds,
+            item_id: itemID, // Pass the same itemID through all attempts
           });
 
           if (tidalResponse.success) {
@@ -120,6 +130,7 @@ export function useDownload() {
             use_album_track_number: useAlbumTrackNumber,
             spotify_id: spotifyId,
             service_url: streamingURLs.deezer_url,
+            item_id: itemID,
           });
 
           if (deezerResponse.success) {
@@ -150,6 +161,7 @@ export function useDownload() {
             use_album_track_number: useAlbumTrackNumber,
             spotify_id: spotifyId,
             service_url: streamingURLs.amazon_url,
+            item_id: itemID,
           });
 
           if (amazonResponse.success) {
@@ -164,10 +176,37 @@ export function useDownload() {
 
       // Try Qobuz as last fallback
       logger.debug(`trying qobuz (fallback) for: ${trackName} - ${artistName}`);
-      service = "qobuz";
+      const qobuzResponse = await downloadTrack({
+        isrc,
+        service: "qobuz",
+        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,
+        duration: durationMs ? Math.round(durationMs / 1000) : undefined,
+        item_id: itemID,
+      });
+
+      // If Qobuz also failed, mark the item as failed
+      if (!qobuzResponse.success) {
+        const { MarkDownloadItemFailed } = await import("../../wailsjs/go/main/App");
+        await MarkDownloadItemFailed(itemID, qobuzResponse.error || "All services failed");
       }
 
-    return await downloadTrack({
+      return qobuzResponse;
+    }
+
+    // Single service download (not auto-fallback)
+    // Convert duration from ms to seconds for backend
+    const durationSecondsForFallback = durationMs ? Math.round(durationMs / 1000) : undefined;
+
+    const singleServiceResponse = await downloadTrack({
       isrc,
       service: service as "deezer" | "tidal" | "qobuz" | "amazon",
       query,
@@ -180,7 +219,214 @@ export function useDownload() {
       position,
       use_album_track_number: useAlbumTrackNumber,
       spotify_id: spotifyId,
+      duration: durationSecondsForFallback,
+      item_id: itemID, // Pass itemID for tracking
     });
+
+    // Mark as failed if download failed for single-service attempt
+    if (!singleServiceResponse.success) {
+      const { MarkDownloadItemFailed } = await import("../../wailsjs/go/main/App");
+      await MarkDownloadItemFailed(itemID, singleServiceResponse.error || "Download failed");
+    }
+
+    return singleServiceResponse;
+  };
+
+  const downloadWithItemID = async (
+    isrc: string,
+    settings: any,
+    itemID: string,
+    trackName?: string,
+    artistName?: string,
+    albumName?: string,
+    playlistName?: string,
+    isArtistDiscography?: boolean,
+    position?: number,
+    spotifyId?: string,
+    durationMs?: number
+  ) => {
+    let service = settings.downloader;
+
+    const query = trackName && artistName ? `${trackName} ${artistName}` : undefined;
+    const os = settings.operatingSystem;
+
+    let outputDir = settings.downloadPath;
+    let useAlbumTrackNumber = false;
+
+    if (playlistName) {
+      outputDir = joinPath(os, outputDir, sanitizePath(playlistName, os));
+
+      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));
+        }
+
+        if (settings.albumSubfolder && albumName) {
+          outputDir = joinPath(os, outputDir, sanitizePath(albumName, os));
+          useAlbumTrackNumber = true;
+        }
+      }
+    }
+
+    if (service === "auto") {
+      // Get all streaming URLs once from song.link API
+      let streamingURLs: any = null;
+      if (spotifyId) {
+        try {
+          const { GetStreamingURLs } = await import("../../wailsjs/go/main/App");
+          const urlsJson = await GetStreamingURLs(spotifyId);
+          streamingURLs = JSON.parse(urlsJson);
+        } catch (err) {
+          console.error("Failed to get streaming URLs:", err);
+        }
+      }
+
+      const durationSeconds = durationMs ? Math.round(durationMs / 1000) : undefined;
+
+      // Try Tidal first
+      if (streamingURLs?.tidal_url) {
+        try {
+          const tidalResponse = await downloadTrack({
+            isrc,
+            service: "tidal",
+            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.tidal_url,
+            duration: durationSeconds,
+            item_id: itemID,
+          });
+
+          if (tidalResponse.success) {
+            return tidalResponse;
+          }
+        } catch (tidalErr) {
+          console.error("Tidal error:", tidalErr);
+        }
+      }
+
+      // 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
+      if (streamingURLs?.amazon_url) {
+        try {
+          const amazonResponse = await downloadTrack({
+            isrc,
+            service: "amazon",
+            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.amazon_url,
+            item_id: itemID,
+          });
+
+          if (amazonResponse.success) {
+            return amazonResponse;
+          }
+        } catch (amazonErr) {
+          console.error("Amazon error:", amazonErr);
+        }
+      }
+
+      // Try Qobuz as last fallback
+      const qobuzResponse = await downloadTrack({
+        isrc,
+        service: "qobuz",
+        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,
+        duration: durationMs ? Math.round(durationMs / 1000) : undefined,
+        item_id: itemID,
+      });
+
+      // If Qobuz also failed, mark the item as failed
+      if (!qobuzResponse.success) {
+        const { MarkDownloadItemFailed } = await import("../../wailsjs/go/main/App");
+        await MarkDownloadItemFailed(itemID, qobuzResponse.error || "All services failed");
+      }
+
+      return qobuzResponse;
+    }
+
+    // Single service download
+    const durationSecondsForFallback = durationMs ? Math.round(durationMs / 1000) : undefined;
+
+    const singleServiceResponse = await downloadTrack({
+      isrc,
+      service: service as "deezer" | "tidal" | "qobuz" | "amazon",
+      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,
+      duration: durationSecondsForFallback,
+      item_id: itemID,
+    });
+
+    // Mark as failed if download failed for single-service attempt
+    if (!singleServiceResponse.success) {
+      const { MarkDownloadItemFailed } = await import("../../wailsjs/go/main/App");
+      await MarkDownloadItemFailed(itemID, singleServiceResponse.error || "Download failed");
+    }
+
+    return singleServiceResponse;
   };
 
   const handleDownloadTrack = async (
@@ -190,7 +436,8 @@ export function useDownload() {
     albumName?: string,
     spotifyId?: string,
     playlistName?: string,
-    isArtistDiscography?: boolean
+    isArtistDiscography?: boolean,
+    durationMs?: number
   ) => {
     if (!isrc) {
       toast.error("No ISRC found for this track");
@@ -212,7 +459,8 @@ export function useDownload() {
         playlistName,
         isArtistDiscography,
         undefined, // Don't pass position for single track
-        spotifyId
+        spotifyId,
+        durationMs
       );
 
       if (response.success) {
@@ -257,6 +505,20 @@ export function useDownload() {
     setBulkDownloadType("selected");
     setDownloadProgress(0);
 
+    // Pre-add ALL tracks to the queue before starting downloads
+    const { AddToDownloadQueue } = await import("../../wailsjs/go/main/App");
+    const itemIDs: string[] = [];
+    for (const isrc of selectedTracks) {
+      const track = allTracks.find((t) => t.isrc === isrc);
+      const itemID = await AddToDownloadQueue(
+        isrc,
+        track?.name || "",
+        track?.artists || "",
+        track?.album_name || ""
+      );
+      itemIDs.push(itemID);
+    }
+
     let successCount = 0;
     let errorCount = 0;
     let skippedCount = 0;
@@ -272,6 +534,7 @@ export function useDownload() {
 
       const isrc = selectedTracks[i];
       const track = allTracks.find((t) => t.isrc === isrc);
+      const itemID = itemIDs[i];
 
       setDownloadingTrack(isrc);
 
@@ -280,17 +543,19 @@ export function useDownload() {
       }
 
       try {
-        // Use sequential numbering (1, 2, 3...) for selected tracks
-        const response = await downloadWithAutoFallback(
+        // Download with pre-created itemID
+        const response = await downloadWithItemID(
           isrc,
           settings,
+          itemID,
           track?.name,
           track?.artists,
           track?.album_name,
           playlistName,
           isArtistDiscography,
           i + 1, // Sequential position based on selection order
-          track?.spotify_id
+          track?.spotify_id,
+          track?.duration_ms
         );
 
         if (response.success) {
@@ -317,6 +582,9 @@ export function useDownload() {
         errorCount++;
         logger.error(`error: ${track?.name} - ${err}`);
         setFailedTracks((prev) => new Set(prev).add(isrc));
+        // Mark item as failed in queue
+        const { MarkDownloadItemFailed } = await import("../../wailsjs/go/main/App");
+        await MarkDownloadItemFailed(itemID, err instanceof Error ? err.message : String(err));
       }
 
       setDownloadProgress(Math.round(((i + 1) / total) * 100));
@@ -328,6 +596,10 @@ export function useDownload() {
     setBulkDownloadType(null);
     shouldStopDownloadRef.current = false;
 
+    // Cancel any remaining queued items
+    const { CancelAllQueuedItems } = await import("../../wailsjs/go/main/App");
+    await CancelAllQueuedItems();
+
     // Build summary message
     logger.info(`batch complete: ${successCount} downloaded, ${skippedCount} skipped, ${errorCount} failed`);
     if (errorCount === 0 && skippedCount === 0) {
@@ -366,6 +638,19 @@ export function useDownload() {
     setBulkDownloadType("all");
     setDownloadProgress(0);
 
+    // Pre-add ALL tracks to the queue before starting downloads
+    const { AddToDownloadQueue } = await import("../../wailsjs/go/main/App");
+    const itemIDs: string[] = [];
+    for (const track of tracksWithIsrc) {
+      const itemID = await AddToDownloadQueue(
+        track.isrc,
+        track.name,
+        track.artists,
+        track.album_name || ""
+      );
+      itemIDs.push(itemID);
+    }
+
     let successCount = 0;
     let errorCount = 0;
     let skippedCount = 0;
@@ -380,21 +665,24 @@ export function useDownload() {
       }
 
       const track = tracksWithIsrc[i];
+      const itemID = itemIDs[i];
 
       setDownloadingTrack(track.isrc);
       setCurrentDownloadInfo({ name: track.name, artists: track.artists });
 
       try {
-        const response = await downloadWithAutoFallback(
+        const response = await downloadWithItemID(
           track.isrc,
           settings,
+          itemID,
           track.name,
           track.artists,
           track.album_name,
           playlistName,
           isArtistDiscography,
           i + 1,
-          track.spotify_id
+          track.spotify_id,
+          track.duration_ms
         );
 
         if (response.success) {
@@ -421,6 +709,9 @@ export function useDownload() {
         errorCount++;
         logger.error(`error: ${track.name} - ${err}`);
         setFailedTracks((prev) => new Set(prev).add(track.isrc));
+        // Mark item as failed in queue
+        const { MarkDownloadItemFailed } = await import("../../wailsjs/go/main/App");
+        await MarkDownloadItemFailed(itemID, err instanceof Error ? err.message : String(err));
       }
 
       setDownloadProgress(Math.round(((i + 1) / total) * 100));
@@ -432,6 +723,10 @@ export function useDownload() {
     setBulkDownloadType(null);
     shouldStopDownloadRef.current = false;
 
+    // Cancel any remaining queued items
+    const { CancelAllQueuedItems: CancelQueued } = await import("../../wailsjs/go/main/App");
+    await CancelQueued();
+
     // Build summary message
     logger.info(`batch complete: ${successCount} downloaded, ${skippedCount} skipped, ${errorCount} failed`);
     if (errorCount === 0 && skippedCount === 0) {

frontend/src/hooks/useDownloadQueueData.ts

@@ -0,0 +1,40 @@
+import { useEffect, useState } from "react";
+import { GetDownloadQueue } from "../../wailsjs/go/main/App";
+import { backend } from "../../wailsjs/go/models";
+
+export function useDownloadQueueData() {
+  const [queueInfo, setQueueInfo] = useState<backend.DownloadQueueInfo>(
+    new backend.DownloadQueueInfo({
+      is_downloading: false,
+      queue: [],
+      current_speed: 0,
+      total_downloaded: 0,
+      session_start_time: 0,
+      queued_count: 0,
+      completed_count: 0,
+      failed_count: 0,
+      skipped_count: 0,
+    })
+  );
+
+  useEffect(() => {
+    const fetchQueue = async () => {
+      try {
+        const info = await GetDownloadQueue();
+        setQueueInfo(info);
+      } catch (error) {
+        console.error("Failed to get download queue:", error);
+      }
+    };
+
+    // Initial fetch
+    fetchQueue();
+
+    // Poll every 200ms
+    const interval = setInterval(fetchQueue, 200);
+
+    return () => clearInterval(interval);
+  }, []);
+
+  return queueInfo;
+}

frontend/src/hooks/useDownloadQueueDialog.ts

@@ -0,0 +1,16 @@
+import { useState } from "react";
+
+export function useDownloadQueueDialog() {
+  const [isOpen, setIsOpen] = useState(false);
+
+  const openQueue = () => setIsOpen(true);
+  const closeQueue = () => setIsOpen(false);
+  const toggleQueue = () => setIsOpen((prev) => !prev);
+
+  return {
+    isOpen,
+    openQueue,
+    closeQueue,
+    toggleQueue,
+  };
+}

frontend/src/hooks/useLyrics.ts

@@ -0,0 +1,104 @@
+import { useState } from "react";
+import { downloadLyrics } from "@/lib/api";
+import { getSettings } from "@/lib/settings";
+import { toastWithSound as toast } from "@/lib/toast-with-sound";
+import { joinPath, sanitizePath } from "@/lib/utils";
+import { logger } from "@/lib/logger";
+
+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 handleDownloadLyrics = async (
+    spotifyId: string,
+    trackName: string,
+    artistName: string,
+    albumName?: string,
+    playlistName?: string,
+    isArtistDiscography?: boolean,
+    position?: number
+  ) => {
+    if (!spotifyId) {
+      toast.error("No Spotify ID found for this track");
+      return;
+    }
+
+    logger.info(`downloading lyrics: ${trackName} - ${artistName}`);
+    const settings = getSettings();
+    setDownloadingLyricsTrack(spotifyId);
+
+    try {
+      const os = settings.operatingSystem;
+      let outputDir = settings.downloadPath;
+
+      // Build output path similar to audio download
+      if (playlistName) {
+        outputDir = joinPath(os, outputDir, sanitizePath(playlistName, os));
+
+        if (isArtistDiscography) {
+          if (settings.albumSubfolder && albumName) {
+            outputDir = joinPath(os, outputDir, sanitizePath(albumName, os));
+          }
+        } else {
+          if (settings.artistSubfolder && artistName) {
+            outputDir = joinPath(os, outputDir, sanitizePath(artistName, os));
+          }
+          if (settings.albumSubfolder && albumName) {
+            outputDir = joinPath(os, outputDir, sanitizePath(albumName, os));
+          }
+        }
+      }
+
+      const response = await downloadLyrics({
+        spotify_id: spotifyId,
+        track_name: trackName,
+        artist_name: artistName,
+        output_dir: outputDir,
+        filename_format: settings.filenameFormat,
+        track_number: settings.trackNumber,
+        position: position || 0,
+        use_album_track_number: settings.albumSubfolder,
+      });
+
+      if (response.success) {
+        if (response.already_exists) {
+          toast.info("Lyrics file already exists");
+          setSkippedLyrics((prev) => new Set(prev).add(spotifyId));
+        } else {
+          toast.success("Lyrics downloaded successfully");
+          setDownloadedLyrics((prev) => new Set(prev).add(spotifyId));
+        }
+        setFailedLyrics((prev) => {
+          const newSet = new Set(prev);
+          newSet.delete(spotifyId);
+          return newSet;
+        });
+      } else {
+        toast.error(response.error || "Failed to download lyrics");
+        setFailedLyrics((prev) => new Set(prev).add(spotifyId));
+      }
+    } catch (err) {
+      toast.error(err instanceof Error ? err.message : "Failed to download lyrics");
+      setFailedLyrics((prev) => new Set(prev).add(spotifyId));
+    } finally {
+      setDownloadingLyricsTrack(null);
+    }
+  };
+
+  const resetLyricsState = () => {
+    setDownloadedLyrics(new Set());
+    setFailedLyrics(new Set());
+    setSkippedLyrics(new Set());
+  };
+
+  return {
+    downloadingLyricsTrack,
+    downloadedLyrics,
+    failedLyrics,
+    skippedLyrics,
+    handleDownloadLyrics,
+    resetLyricsState,
+  };
+}

frontend/src/index.css

@@ -196,3 +196,51 @@
 .dark [data-sonner-toast][data-type="info"] [data-icon] {
   @apply text-blue-400;
 }
+
+/* Custom Scrollbar - mengikuti primary color theme */
+::-webkit-scrollbar {
+  width: 8px;
+  height: 8px;
+}
+
+::-webkit-scrollbar-track {
+  background: var(--secondary);
+  border-radius: 4px;
+}
+
+::-webkit-scrollbar-thumb {
+  background: var(--primary);
+  border-radius: 4px;
+  opacity: 0.7;
+}
+
+::-webkit-scrollbar-thumb:hover {
+  background: var(--primary);
+  filter: brightness(1.2);
+}
+
+/* Firefox scrollbar support */
+* {
+  scrollbar-width: thin;
+  scrollbar-color: var(--primary) var(--secondary);
+}
+
+/* Custom scrollbar class untuk komponen tertentu */
+.custom-scrollbar::-webkit-scrollbar {
+  width: 6px;
+  height: 6px;
+}
+
+.custom-scrollbar::-webkit-scrollbar-track {
+  background: var(--muted);
+  border-radius: 3px;
+}
+
+.custom-scrollbar::-webkit-scrollbar-thumb {
+  background: var(--primary);
+  border-radius: 3px;
+}
+
+.custom-scrollbar::-webkit-scrollbar-thumb:hover {
+  filter: brightness(1.2);
+}

frontend/src/lib/api.ts

@@ -3,8 +3,12 @@ import type {
   DownloadRequest,
   DownloadResponse,
   HealthResponse,
+  LyricsDownloadRequest,
+  LyricsDownloadResponse,
+  CoverDownloadRequest,
+  CoverDownloadResponse,
 } from "@/types/api";
-import { GetSpotifyMetadata, DownloadTrack } from "../../wailsjs/go/main/App";
+import { GetSpotifyMetadata, DownloadTrack, DownloadLyrics, DownloadCover } from "../../wailsjs/go/main/App";
 import { main } from "../../wailsjs/go/models";
 
 export async function fetchSpotifyMetadata(
@@ -39,3 +43,17 @@ export async function checkHealth(): Promise<HealthResponse> {
     time: new Date().toISOString(),
   };
 }
+
+export async function downloadLyrics(
+  request: LyricsDownloadRequest
+): Promise<LyricsDownloadResponse> {
+  const req = new main.LyricsDownloadRequest(request);
+  return await DownloadLyrics(req);
+}
+
+export async function downloadCover(
+  request: CoverDownloadRequest
+): Promise<CoverDownloadResponse> {
+  const req = new main.CoverDownloadRequest(request);
+  return await DownloadCover(req);
+}

frontend/src/lib/relative-time.ts

@@ -0,0 +1,59 @@
+/**
+ * Format a date to relative time string with max 2 units
+ * e.g., "23 hours 32 minutes ago", "1 day 14 hours ago"
+ */
+export function formatRelativeTime(date: Date | string | number): string {
+  const now = new Date();
+  const target = new Date(date);
+  const diffMs = now.getTime() - target.getTime();
+
+  if (diffMs < 0) return "just now";
+
+  const seconds = Math.floor(diffMs / 1000);
+  const minutes = Math.floor(seconds / 60);
+  const hours = Math.floor(minutes / 60);
+  const days = Math.floor(hours / 24);
+  const weeks = Math.floor(days / 7);
+  const months = Math.floor(days / 30);
+  const years = Math.floor(days / 365);
+
+  const parts: string[] = [];
+
+  if (years > 0) {
+    parts.push(`${years} ${years === 1 ? "year" : "years"}`);
+    const remainingMonths = Math.floor((days % 365) / 30);
+    if (remainingMonths > 0) {
+      parts.push(`${remainingMonths} ${remainingMonths === 1 ? "month" : "months"}`);
+    }
+  } else if (months > 0) {
+    parts.push(`${months} ${months === 1 ? "month" : "months"}`);
+    const remainingDays = days % 30;
+    if (remainingDays > 0) {
+      parts.push(`${remainingDays} ${remainingDays === 1 ? "day" : "days"}`);
+    }
+  } else if (weeks > 0) {
+    parts.push(`${weeks} ${weeks === 1 ? "week" : "weeks"}`);
+    const remainingDays = days % 7;
+    if (remainingDays > 0) {
+      parts.push(`${remainingDays} ${remainingDays === 1 ? "day" : "days"}`);
+    }
+  } else if (days > 0) {
+    parts.push(`${days} ${days === 1 ? "day" : "days"}`);
+    const remainingHours = hours % 24;
+    if (remainingHours > 0) {
+      parts.push(`${remainingHours} ${remainingHours === 1 ? "hour" : "hours"}`);
+    }
+  } else if (hours > 0) {
+    parts.push(`${hours} ${hours === 1 ? "hour" : "hours"}`);
+    const remainingMinutes = minutes % 60;
+    if (remainingMinutes > 0) {
+      parts.push(`${remainingMinutes} ${remainingMinutes === 1 ? "minute" : "minutes"}`);
+    }
+  } else if (minutes > 0) {
+    parts.push(`${minutes} ${minutes === 1 ? "minute" : "minutes"}`);
+  } else {
+    return "just now";
+  }
+
+  return "Released " + parts.slice(0, 2).join(" ") + " ago";
+}

frontend/src/lib/settings.ts

@@ -1,14 +1,18 @@
 import { GetDefaults } from "../../wailsjs/go/main/App";
 
+export type FontFamily = "google-sans" | "inter" | "poppins" | "roboto" | "dm-sans" | "plus-jakarta-sans" | "manrope" | "space-grotesk";
+
 export interface Settings {
   downloadPath: string;
   downloader: "auto" | "deezer" | "tidal" | "qobuz" | "amazon";
   theme: string;
   themeMode: "auto" | "light" | "dark";
+  fontFamily: FontFamily;
   filenameFormat: "title-artist" | "artist-title" | "title";
   artistSubfolder: boolean;
   albumSubfolder: boolean;
   trackNumber: boolean;
+  sfxEnabled: boolean;
   operatingSystem: "Windows" | "linux/MacOS"
 }
 
@@ -26,13 +30,34 @@ export const DEFAULT_SETTINGS: Settings = {
   downloader: "auto",
   theme: "yellow",
   themeMode: "auto",
+  fontFamily: "google-sans",
   filenameFormat: "title-artist",
   artistSubfolder: false,
   albumSubfolder: false,
   trackNumber: false,
+  sfxEnabled: true,
   operatingSystem: detectOS()
 };
 
+export const FONT_OPTIONS: { value: FontFamily; label: string; fontFamily: string }[] = [
+  { 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: "manrope", label: "Manrope", fontFamily: '"Manrope", system-ui, sans-serif' },
+  { value: "space-grotesk", label: "Space Grotesk", fontFamily: '"Space Grotesk", system-ui, sans-serif' },
+];
+
+export function applyFont(fontFamily: FontFamily): void {
+  const font = FONT_OPTIONS.find(f => f.value === fontFamily);
+  if (font) {
+    document.documentElement.style.setProperty('--font-sans', font.fontFamily);
+    document.body.style.fontFamily = font.fontFamily;
+  }
+}
+
 async function fetchDefaultPath(): Promise<string> {
   try {
     const data = await GetDefaults();

frontend/src/lib/toast-with-sound.ts

@@ -6,38 +6,42 @@ import {
   playInfoSound,
 } from "./audio";
 import { logger } from "./logger";
+import { getSettings } from "./settings";
 
 const toastStyle = {
   className: "font-mono lowercase",
 };
 
+// Helper to check if SFX is enabled
+const isSfxEnabled = () => getSettings().sfxEnabled;
+
 // Wrapper functions for toast with sound effects
 export const toastWithSound = {
   success: (message: string, data?: any) => {
     const msg = message.toLowerCase();
     logger.success(msg);
-    playSuccessSound();
+    if (isSfxEnabled()) playSuccessSound();
     return toast.success(msg, { ...toastStyle, ...data });
   },
 
   error: (message: string, data?: any) => {
     const msg = message.toLowerCase();
     logger.error(msg);
-    playErrorSound();
+    if (isSfxEnabled()) playErrorSound();
     return toast.error(msg, { ...toastStyle, ...data });
   },
 
   warning: (message: string, data?: any) => {
     const msg = message.toLowerCase();
     logger.warning(msg);
-    playWarningSound();
+    if (isSfxEnabled()) playWarningSound();
     return toast.warning(msg, { ...toastStyle, ...data });
   },
 
   info: (message: string, data?: any) => {
     const msg = message.toLowerCase();
     logger.info(msg);
-    playInfoSound();
+    if (isSfxEnabled()) playInfoSound();
     return toast.info(msg, { ...toastStyle, ...data });
   },
 
@@ -45,7 +49,7 @@ export const toastWithSound = {
   message: (message: string, data?: any) => {
     const msg = message.toLowerCase();
     logger.info(msg);
-    playInfoSound();
+    if (isSfxEnabled()) playInfoSound();
     return toast(msg, { ...toastStyle, ...data });
   },
 };

frontend/src/lib/utils.ts

@@ -1,5 +1,6 @@
 import { clsx, type ClassValue } from "clsx"
 import { twMerge } from "tailwind-merge"
+import { BrowserOpenURL } from "../../wailsjs/runtime/runtime"
 import type { Settings } from "./settings";
 
 export function cn(...inputs: ClassValue[]) {
@@ -45,3 +46,14 @@ export function buildOutputPath(settings: Settings, folder?: string) {
 
   return sanitized ? joinPath(os, base, sanitized) : base;
 }
+
+export function openExternal(url: string) {
+  if (!url) return;
+  try {
+    BrowserOpenURL(url);
+  } catch (error) {
+    if (typeof window !== "undefined") {
+      window.open(url, "_blank", "noopener,noreferrer");
+    }
+  }
+}

frontend/src/main.tsx

@@ -3,14 +3,10 @@ import { createRoot } from "react-dom/client";
 import "./index.css";
 import App from "./App.tsx";
 import { Toaster } from "@/components/ui/sonner";
-import { DebugLogger } from "@/components/DebugLogger";
 
 createRoot(document.getElementById("root")!).render(
   <StrictMode>
     <App />
     <Toaster position="bottom-left" duration={1000} />
-    <div className="fixed bottom-2 left-2 z-50">
-      <DebugLogger />
-    </div>
   </StrictMode>
 );

frontend/src/types/api.ts

@@ -124,6 +124,8 @@ export interface DownloadRequest {
   use_album_track_number?: boolean;
   spotify_id?: string;
   service_url?: string;
+  duration?: number; // Track duration in seconds for better matching
+  item_id?: string; // Optional queue item ID for multi-service fallback tracking
 }
 
 export interface DownloadResponse {
@@ -132,9 +134,88 @@ export interface DownloadResponse {
   file?: string;
   error?: string;
   already_exists?: boolean;
+  item_id?: string; // Queue item ID for tracking
 }
 
 export interface HealthResponse {
   status: string;
   time: string;
 }
+
+export interface TimeSlice {
+  time: number;
+  magnitudes: number[]; 
+}
+
+export interface SpectrumData {
+  time_slices: TimeSlice[];
+  sample_rate: number;
+  freq_bins: number;
+  duration: number;
+  max_freq: number;
+}
+
+export interface AnalysisResult {
+  file_path: string;
+  sample_rate: number;
+  channels: number;
+  bits_per_sample: number;
+  total_samples: number;
+  duration: number;
+  bit_depth: string;
+  dynamic_range: number;
+  peak_amplitude: number;
+  rms_level: number;
+  spectrum?: SpectrumData;
+}
+
+export interface LyricsDownloadRequest {
+  spotify_id: string;
+  track_name: string;
+  artist_name: string;
+  output_dir?: string;
+  filename_format?: string;
+  track_number?: boolean;
+  position?: number;
+  use_album_track_number?: boolean;
+}
+
+export interface LyricsDownloadResponse {
+  success: boolean;
+  message: string;
+  file?: string;
+  error?: string;
+  already_exists?: boolean;
+}
+
+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;
+}
+
+export interface CoverDownloadRequest {
+  cover_url: string;
+  track_name: string;
+  artist_name: string;
+  output_dir?: string;
+  filename_format?: string;
+  track_number?: boolean;
+  position?: number;
+}
+
+export interface CoverDownloadResponse {
+  success: boolean;
+  message: string;
+  file?: string;
+  error?: string;
+  already_exists?: boolean;
+}
+
+

go.mod

@@ -6,6 +6,7 @@ require (
 	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/wailsapp/wails/v2 v2.11.0
 )
 
@@ -15,6 +16,7 @@ require (
 	github.com/godbus/dbus/v5 v5.2.0 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/gorilla/websocket v1.5.3 // indirect
+	github.com/icza/bitio v1.1.0 // indirect
 	github.com/jchv/go-winloader v0.0.0-20250406163304-c1995be93bd1 // indirect
 	github.com/labstack/echo/v4 v4.13.4 // indirect
 	github.com/labstack/gommon v0.4.2 // indirect
@@ -24,6 +26,8 @@ require (
 	github.com/leaanthony/u v1.1.1 // indirect
 	github.com/mattn/go-colorable v0.1.14 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mewkiz/pkg v0.0.0-20250417130911-3f050ff8c56d // indirect
+	github.com/mewpkg/term v0.0.0-20241026122259-37a80af23985 // indirect
 	github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/rivo/uniseg v0.4.7 // indirect

go.sum

@@ -16,6 +16,10 @@ github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/gorilla/websocket v1.5.3 h1:saDtZ6Pbx/0u+bgYQ3q96pZgCzfhKXGPqt7kZ72aNNg=
 github.com/gorilla/websocket v1.5.3/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
+github.com/icza/bitio v1.1.0 h1:ysX4vtldjdi3Ygai5m1cWy4oLkhWTAi+SyO6HC8L9T0=
+github.com/icza/bitio v1.1.0/go.mod h1:0jGnlLAx8MKMr9VGnn/4YrvZiprkvBelsVIbA9Jjr9A=
+github.com/icza/mighty v0.0.0-20180919140131-cfd07d671de6 h1:8UsGZ2rr2ksmEru6lToqnXgA8Mz1DP11X4zSJ159C3k=
+github.com/icza/mighty v0.0.0-20180919140131-cfd07d671de6/go.mod h1:xQig96I1VNBDIWGCdTt54nHt6EeI639SmHycLYL7FkA=
 github.com/jchv/go-winloader v0.0.0-20250406163304-c1995be93bd1 h1:njuLRcjAuMKr7kI3D85AXWkw6/+v9PwtV6M6o11sWHQ=
 github.com/jchv/go-winloader v0.0.0-20250406163304-c1995be93bd1/go.mod h1:alcuEEnZsY1WQsagKhZDsoPCRoOijYqhZvPwLG0kzVs=
 github.com/labstack/echo/v4 v4.13.4 h1:oTZZW+T3s9gAu5L8vmzihV7/lkXGZuITzTQkTEhcXEA=
@@ -39,6 +43,12 @@ github.com/mattn/go-colorable v0.1.14 h1:9A9LHSqF/7dyVVX6g0U9cwm9pG3kP9gSzcuIPHP
 github.com/mattn/go-colorable v0.1.14/go.mod h1:6LmQG8QLFO4G5z1gPvYEzlUgJ2wF+stgPZH1UqBm1s8=
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/mewkiz/flac v1.0.13 h1:6wF8rRQKBFW159Daqx6Ro7K5ZnlVhHUKfS5aTsC4oXs=
+github.com/mewkiz/flac v1.0.13/go.mod h1:HfPYDA+oxjyuqMu2V+cyKcxF51KM6incpw5eZXmfA6k=
+github.com/mewkiz/pkg v0.0.0-20250417130911-3f050ff8c56d h1:IL2tii4jXLdhCeQN69HNzYYW1kl0meSG0wt5+sLwszU=
+github.com/mewkiz/pkg v0.0.0-20250417130911-3f050ff8c56d/go.mod h1:SIpumAnUWSy0q9RzKD3pyH3g1t5vdawUAPcW5tQrUtI=
+github.com/mewpkg/term v0.0.0-20241026122259-37a80af23985 h1:h8O1byDZ1uk6RUXMhj1QJU3VXFKXHDZxr4TXRPGeBa8=
+github.com/mewpkg/term v0.0.0-20241026122259-37a80af23985/go.mod h1:uiPmbdUbdt1NkGApKl7htQjZ8S7XaGUAVulJUJ9v6q4=
 github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c h1:+mdjkGKdHQG3305AYmdv1U2eRNDiU2ErMBj1gwrq8eQ=
 github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c/go.mod h1:7rwL4CYBLnjLxUqIJNnCWiEdr3bn6IUYi15bNlnbCCU=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=

main.go

@@ -30,6 +30,12 @@ func main() {
 		},
 		BackgroundColour: &options.RGBA{R: 0, G: 0, B: 0, A: 255},
 		OnStartup:        app.startup,
+		DragAndDrop: &options.DragAndDrop{
+			EnableFileDrop:     true,
+			DisableWebViewDrop: false,
+			CSSDropProperty:    "--wails-drop-target",
+			CSSDropValue:       "drop",
+		},
 		Bind: []interface{}{
 			app,
 		},

version.json

@@ -1,3 +1,3 @@
 {
-  "version": "6.1"
+  "version": "6.6"
 }

wails.json

@@ -2,7 +2,8 @@
   "$schema": "https://wails.io/schemas/config.v2.json",
   "name": "SpotiFLAC",
   "outputfilename": "SpotiFLAC",
-  "frontend:install": "pnpm install && pnpm run generate-icon",
+  "frontend:install": "pnpm install",
+  "frontend:dev:install": "pnpm install",
   "frontend:build": "pnpm run build",
   "frontend:dev:watcher": "pnpm run dev",
   "frontend:dev:serverUrl": "auto",
@@ -11,7 +12,7 @@
   },
   "info": {
     "productName": "SpotiFLAC",
-    "productVersion": "6.2"
+    "productVersion": "6.6"
   },
   "wailsjsdir": "./frontend",
   "assetdir": "./frontend/dist",