v6.4

app.go

@@ -357,10 +357,14 @@ func (a *App) AnalyzeMultipleTracks(filePaths []string) (string, error) {
 
 // LyricsDownloadRequest represents the request structure for downloading lyrics
 type LyricsDownloadRequest struct {
-	SpotifyID  string `json:"spotify_id"`
+	SpotifyID           string `json:"spotify_id"`
-	TrackName  string `json:"track_name"`
+	TrackName           string `json:"track_name"`
-	ArtistName string `json:"artist_name"`
+	ArtistName          string `json:"artist_name"`
-	OutputDir  string `json:"output_dir"`
+	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
@@ -374,10 +378,14 @@ func (a *App) DownloadLyrics(req LyricsDownloadRequest) (backend.LyricsDownloadR
 
 	client := backend.NewLyricsClient()
 	backendReq := backend.LyricsDownloadRequest{
-		SpotifyID:  req.SpotifyID,
+		SpotifyID:           req.SpotifyID,
-		TrackName:  req.TrackName,
+		TrackName:           req.TrackName,
-		ArtistName: req.ArtistName,
+		ArtistName:          req.ArtistName,
-		OutputDir:  req.OutputDir,
+		OutputDir:           req.OutputDir,
+		FilenameFormat:      req.FilenameFormat,
+		TrackNumber:         req.TrackNumber,
+		Position:            req.Position,
+		UseAlbumTrackNumber: req.UseAlbumTrackNumber,
 	}
 
 	resp, err := client.DownloadLyrics(backendReq)
@@ -390,3 +398,23 @@ func (a *App) DownloadLyrics(req LyricsDownloadRequest) (backend.LyricsDownloadR
 
 	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/lyrics.go

@@ -28,10 +28,14 @@ type LyricsResponse struct {
 
 // LyricsDownloadRequest represents a request to download lyrics
 type LyricsDownloadRequest struct {
-	SpotifyID  string `json:"spotify_id"`
+	SpotifyID           string `json:"spotify_id"`
-	TrackName  string `json:"track_name"`
+	TrackName           string `json:"track_name"`
-	ArtistName string `json:"artist_name"`
+	ArtistName          string `json:"artist_name"`
-	OutputDir  string `json:"output_dir"`
+	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
@@ -121,6 +125,31 @@ func msToLRCTimestamp(msStr string) string {
 	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 == "" {
@@ -143,8 +172,12 @@ func (c *LyricsClient) DownloadLyrics(req LyricsDownloadRequest) (*LyricsDownloa
 		}, err
 	}
 
-	// Generate filename
+	// Generate filename using same format as track
-	filename := sanitizeFilename(fmt.Sprintf("%s - %s.lrc", req.TrackName, req.ArtistName))
+	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

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
+}

frontend/package.json.md5

@@ -1 +1 @@
-2d92c35b92c8ea713ea561773c5b7b7b
+e92e100705a0bb90f6783cd4074df1a7

frontend/src/App.tsx

@@ -31,6 +31,7 @@ import type { HistoryItem } from "@/components/FetchHistory";
 import { useDownload } from "@/hooks/useDownload";
 import { useMetadata } from "@/hooks/useMetadata";
 import { useLyrics } from "@/hooks/useLyrics";
+import { useAvailability } from "@/hooks/useAvailability";
 
 const HISTORY_KEY = "spotiflac_fetch_history";
 const MAX_HISTORY = 5;
@@ -45,11 +46,12 @@ function App() {
   const [fetchHistory, setFetchHistory] = useState<HistoryItem[]>([]);
 
   const ITEMS_PER_PAGE = 50;
-  const CURRENT_VERSION = "6.3";
+  const CURRENT_VERSION = "6.4";
 
   const download = useDownload();
   const metadata = useMetadata();
   const lyrics = useLyrics();
+  const availability = useAvailability();
 
   useEffect(() => {
     const settings = getSettings();
@@ -79,6 +81,7 @@ function App() {
     setSearchQuery("");
     download.resetDownloadedTracks();
     lyrics.resetLyricsState();
+    availability.clearAvailability();
     setSortBy("default");
     setCurrentPage(1);
   }, [metadata.metadata]);
@@ -256,8 +259,11 @@ function App() {
           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 || "")}
           onDownload={download.handleDownloadTrack}
           onDownloadLyrics={lyrics.handleDownloadLyrics}
+          onCheckAvailability={availability.checkAvailability}
           onOpenFolder={handleOpenFolder}
         />
       );
@@ -286,14 +292,17 @@ function App() {
           failedLyrics={lyrics.failedLyrics}
           skippedLyrics={lyrics.skippedLyrics}
           downloadingLyricsTrack={lyrics.downloadingLyricsTrack}
+          checkingAvailabilityTrack={availability.checkingTrackId}
+          availabilityMap={availability.availabilityMap}
           onSearchChange={handleSearchChange}
           onSortChange={setSortBy}
           onToggleTrack={toggleTrackSelection}
           onToggleSelectAll={toggleSelectAll}
           onDownloadTrack={download.handleDownloadTrack}
-          onDownloadLyrics={(spotifyId, name, artists, albumName) =>
+          onDownloadLyrics={(spotifyId, name, artists, albumName, _folderName, _isArtistDiscography, position) =>
-            lyrics.handleDownloadLyrics(spotifyId, name, artists, albumName, album_info.name)
+            lyrics.handleDownloadLyrics(spotifyId, name, artists, albumName, album_info.name, false, position)
           }
+          onCheckAvailability={availability.checkAvailability}
           onDownloadAll={() => download.handleDownloadAll(track_list, album_info.name)}
           onDownloadSelected={() =>
             download.handleDownloadSelected(selectedTracks, track_list, album_info.name)
@@ -340,14 +349,17 @@ function App() {
           failedLyrics={lyrics.failedLyrics}
           skippedLyrics={lyrics.skippedLyrics}
           downloadingLyricsTrack={lyrics.downloadingLyricsTrack}
+          checkingAvailabilityTrack={availability.checkingTrackId}
+          availabilityMap={availability.availabilityMap}
           onSearchChange={handleSearchChange}
           onSortChange={setSortBy}
           onToggleTrack={toggleTrackSelection}
           onToggleSelectAll={toggleSelectAll}
           onDownloadTrack={download.handleDownloadTrack}
-          onDownloadLyrics={(spotifyId, name, artists, albumName) =>
+          onDownloadLyrics={(spotifyId, name, artists, albumName, _folderName, _isArtistDiscography, position) =>
-            lyrics.handleDownloadLyrics(spotifyId, name, artists, albumName, playlist_info.owner.name)
+            lyrics.handleDownloadLyrics(spotifyId, name, artists, albumName, playlist_info.owner.name, false, position)
           }
+          onCheckAvailability={availability.checkAvailability}
           onDownloadAll={() => download.handleDownloadAll(track_list, playlist_info.owner.name)}
           onDownloadSelected={() =>
             download.handleDownloadSelected(
@@ -400,14 +412,17 @@ function App() {
           failedLyrics={lyrics.failedLyrics}
           skippedLyrics={lyrics.skippedLyrics}
           downloadingLyricsTrack={lyrics.downloadingLyricsTrack}
+          checkingAvailabilityTrack={availability.checkingTrackId}
+          availabilityMap={availability.availabilityMap}
           onSearchChange={handleSearchChange}
           onSortChange={setSortBy}
           onToggleTrack={toggleTrackSelection}
           onToggleSelectAll={toggleSelectAll}
           onDownloadTrack={download.handleDownloadTrack}
-          onDownloadLyrics={(spotifyId, name, artists, albumName, _folderName, isArtistDiscography) =>
+          onDownloadLyrics={(spotifyId, name, artists, albumName, _folderName, isArtistDiscography, position) =>
-            lyrics.handleDownloadLyrics(spotifyId, name, artists, albumName, artist_info.name, isArtistDiscography)
+            lyrics.handleDownloadLyrics(spotifyId, name, artists, albumName, artist_info.name, isArtistDiscography, position)
           }
+          onCheckAvailability={availability.checkAvailability}
           onDownloadAll={() => download.handleDownloadAll(track_list, artist_info.name, true)}
           onDownloadSelected={() =>
             download.handleDownloadSelected(selectedTracks, track_list, artist_info.name, true)

frontend/src/components/AlbumInfo.tsx

@@ -5,7 +5,7 @@ import { Spinner } from "@/components/ui/spinner";
 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: {
@@ -36,12 +36,16 @@ interface AlbumInfoProps {
   failedLyrics?: Set<string>;
   skippedLyrics?: Set<string>;
   downloadingLyricsTrack?: string | null;
+  // Availability props
+  checkingAvailabilityTrack?: string | null;
+  availabilityMap?: Map<string, TrackAvailability>;
   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) => void;
+  onDownloadLyrics?: (spotifyId: string, name: string, artists: string, albumName: string, folderName?: string, isArtistDiscography?: boolean, position?: number) => void;
+  onCheckAvailability?: (spotifyId: string) => void;
   onDownloadAll: () => void;
   onDownloadSelected: () => void;
   onStopDownload: () => void;
@@ -71,12 +75,15 @@ export function AlbumInfo({
   failedLyrics,
   skippedLyrics,
   downloadingLyricsTrack,
+  checkingAvailabilityTrack,
+  availabilityMap,
   onSearchChange,
   onSortChange,
   onToggleTrack,
   onToggleSelectAll,
   onDownloadTrack,
   onDownloadLyrics,
+  onCheckAvailability,
   onDownloadAll,
   onDownloadSelected,
   onStopDownload,
@@ -191,10 +198,13 @@ export function AlbumInfo({
           failedLyrics={failedLyrics}
           skippedLyrics={skippedLyrics}
           downloadingLyricsTrack={downloadingLyricsTrack}
+          checkingAvailabilityTrack={checkingAvailabilityTrack}
+          availabilityMap={availabilityMap}
           onToggleTrack={onToggleTrack}
           onToggleSelectAll={onToggleSelectAll}
           onDownloadTrack={onDownloadTrack}
           onDownloadLyrics={onDownloadLyrics}
+          onCheckAvailability={onCheckAvailability}
           onPageChange={onPageChange}
           onTrackClick={onTrackClick}
         />

frontend/src/components/ArtistInfo.tsx

@@ -5,7 +5,7 @@ import { Spinner } from "@/components/ui/spinner";
 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: {
@@ -41,12 +41,16 @@ interface ArtistInfoProps {
   failedLyrics?: Set<string>;
   skippedLyrics?: Set<string>;
   downloadingLyricsTrack?: string | null;
+  // Availability props
+  checkingAvailabilityTrack?: string | null;
+  availabilityMap?: Map<string, TrackAvailability>;
   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) => void;
+  onDownloadLyrics?: (spotifyId: string, name: string, artists: string, albumName: string, folderName?: string, isArtistDiscography?: boolean, position?: number) => void;
+  onCheckAvailability?: (spotifyId: string) => void;
   onDownloadAll: () => void;
   onDownloadSelected: () => void;
   onStopDownload: () => void;
@@ -78,12 +82,15 @@ export function ArtistInfo({
   failedLyrics,
   skippedLyrics,
   downloadingLyricsTrack,
+  checkingAvailabilityTrack,
+  availabilityMap,
   onSearchChange,
   onSortChange,
   onToggleTrack,
   onToggleSelectAll,
   onDownloadTrack,
   onDownloadLyrics,
+  onCheckAvailability,
   onDownloadAll,
   onDownloadSelected,
   onStopDownload,
@@ -230,10 +237,13 @@ export function ArtistInfo({
             failedLyrics={failedLyrics}
             skippedLyrics={skippedLyrics}
             downloadingLyricsTrack={downloadingLyricsTrack}
+            checkingAvailabilityTrack={checkingAvailabilityTrack}
+            availabilityMap={availabilityMap}
             onToggleTrack={onToggleTrack}
             onToggleSelectAll={onToggleSelectAll}
             onDownloadTrack={onDownloadTrack}
             onDownloadLyrics={onDownloadLyrics}
+            onCheckAvailability={onCheckAvailability}
             onPageChange={onPageChange}
             onAlbumClick={onAlbumClick}
             onArtistClick={onArtistClick}

frontend/src/components/AudioAnalysisDialog.tsx

@@ -1,4 +1,4 @@
-import { useState } from "react";
+import { useState, useCallback } from "react";
 import { Button } from "@/components/ui/button";
 import {
   Dialog,
@@ -17,11 +17,14 @@ 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";
+import { useEffect } from "react";
 
 export function AudioAnalysisDialog() {
   const [open, setOpen] = useState(false);
   const { analyzing, result, analyzeFile, clearResult } = useAudioAnalysis();
   const [selectedFilePath, setSelectedFilePath] = useState<string>("");
+  const [isDragging, setIsDragging] = useState(false);
 
   const handleSelectFile = async () => {
     try {
@@ -37,6 +40,38 @@ export function AudioAnalysisDialog() {
     }
   };
 
+  const handleFileDrop = useCallback(async (_x: number, _y: number, paths: string[]) => {
+    setIsDragging(false);
+    
+    if (paths.length === 0) return;
+    
+    const filePath = paths[0];
+    
+    // Check if it's a FLAC file
+    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]);
+
+  // Register drag and drop handlers when dialog is open
+  useEffect(() => {
+    if (open) {
+      OnFileDrop((x, y, paths) => {
+        handleFileDrop(x, y, paths);
+      }, true);
+      
+      return () => {
+        OnFileDropOff();
+      };
+    }
+  }, [open, handleFileDrop]);
+
   const handleClose = () => {
     setOpen(false);
     setTimeout(() => {
@@ -82,11 +117,32 @@ export function AudioAnalysisDialog() {
         <div className="space-y-4">
           {/* File Selection */}
           {!result && !analyzing && (
-            <div className="flex flex-col items-center justify-center py-12 border-2 border-dashed rounded-lg">
+            <div 
-              <Activity className="h-16 w-16 text-muted-foreground/50 mb-4" />
+              className={`flex flex-col items-center justify-center py-12 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-16 w-16 mb-4 transition-colors ${isDragging ? "text-primary" : "text-muted-foreground/50"}`} />
               <h3 className="text-lg font-medium mb-2">Analyze FLAC Audio Quality</h3>
               <p className="text-sm text-muted-foreground mb-6 text-center max-w-md">
-                Upload a FLAC file to verify true lossless quality, view detailed technical specifications, and see the frequency spectrum
+                {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" />

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

@@ -5,7 +5,7 @@ import { Spinner } from "@/components/ui/spinner";
 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: {
@@ -40,12 +40,16 @@ interface PlaylistInfoProps {
   failedLyrics?: Set<string>;
   skippedLyrics?: Set<string>;
   downloadingLyricsTrack?: string | null;
+  // Availability props
+  checkingAvailabilityTrack?: string | null;
+  availabilityMap?: Map<string, TrackAvailability>;
   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) => void;
+  onDownloadLyrics?: (spotifyId: string, name: string, artists: string, albumName: string, folderName?: string, isArtistDiscography?: boolean, position?: number) => void;
+  onCheckAvailability?: (spotifyId: string) => void;
   onDownloadAll: () => void;
   onDownloadSelected: () => void;
   onStopDownload: () => void;
@@ -76,12 +80,15 @@ export function PlaylistInfo({
   failedLyrics,
   skippedLyrics,
   downloadingLyricsTrack,
+  checkingAvailabilityTrack,
+  availabilityMap,
   onSearchChange,
   onSortChange,
   onToggleTrack,
   onToggleSelectAll,
   onDownloadTrack,
   onDownloadLyrics,
+  onCheckAvailability,
   onDownloadAll,
   onDownloadSelected,
   onStopDownload,
@@ -182,10 +189,13 @@ export function PlaylistInfo({
           failedLyrics={failedLyrics}
           skippedLyrics={skippedLyrics}
           downloadingLyricsTrack={downloadingLyricsTrack}
+          checkingAvailabilityTrack={checkingAvailabilityTrack}
+          availabilityMap={availabilityMap}
           onToggleTrack={onToggleTrack}
           onToggleSelectAll={onToggleSelectAll}
           onDownloadTrack={onDownloadTrack}
           onDownloadLyrics={onDownloadLyrics}
+          onCheckAvailability={onCheckAvailability}
           onPageChange={onPageChange}
           onAlbumClick={onAlbumClick}
           onArtistClick={onArtistClick}

frontend/src/components/TrackInfo.tsx

@@ -1,8 +1,14 @@
 import { Button } from "@/components/ui/button";
 import { Card, CardContent } from "@/components/ui/card";
-import { Download, FolderOpen, CheckCircle, XCircle, FileText, SkipForward } from "lucide-react";
+import { Download, FolderOpen, CheckCircle, XCircle, FileText, SkipForward, Globe } 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 };
@@ -14,8 +20,11 @@ interface TrackInfoProps {
   downloadedLyrics?: boolean;
   failedLyrics?: boolean;
   skippedLyrics?: boolean;
+  checkingAvailability?: boolean;
+  availability?: TrackAvailability;
   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;
   onOpenFolder: () => void;
 }
 
@@ -29,21 +38,71 @@ export function TrackInfo({
   downloadedLyrics,
   failedLyrics,
   skippedLyrics,
+  checkingAvailability,
+  availability,
   onDownload,
   onDownloadLyrics,
+  onCheckAvailability,
   onOpenFolder,
 }: TrackInfoProps) {
   return (
     <Card>
       <CardContent className="px-6">
         <div className="flex gap-6 items-start">
-          {track.images && (
+          <div className="shrink-0">
-            <img
+            {track.images && (
-              src={track.images}
+              <img
-              alt={track.name}
+                src={track.images}
-              className="w-48 h-48 rounded-md shadow-lg object-cover shrink-0"
+                alt={track.name}
-            />
+                className="w-48 h-48 rounded-md shadow-lg object-cover"
-          )}
+              />
+            )}
+            {/* Availability Icons - below cover art */}
+            {availability && (
+              <div className="flex items-center justify-center gap-2 mt-3">
+                <Tooltip>
+                  <TooltipTrigger>
+                    <div className={`${availability.tidal ? "text-green-500" : "text-red-500"}`}>
+                      <TidalIcon className="w-5 h-5" />
+                    </div>
+                  </TooltipTrigger>
+                  <TooltipContent>
+                    <p>Tidal</p>
+                  </TooltipContent>
+                </Tooltip>
+                <Tooltip>
+                  <TooltipTrigger>
+                    <div className={`${availability.deezer ? "text-green-500" : "text-red-500"}`}>
+                      <DeezerIcon className="w-5 h-5" />
+                    </div>
+                  </TooltipTrigger>
+                  <TooltipContent>
+                    <p>Deezer</p>
+                  </TooltipContent>
+                </Tooltip>
+                <Tooltip>
+                  <TooltipTrigger>
+                    <div className={`${availability.amazon ? "text-green-500" : "text-red-500"}`}>
+                      <AmazonIcon className="w-5 h-5" />
+                    </div>
+                  </TooltipTrigger>
+                  <TooltipContent>
+                    <p>Amazon Music</p>
+                  </TooltipContent>
+                </Tooltip>
+                <Tooltip>
+                  <TooltipTrigger>
+                    <div className={`${availability.qobuz ? "text-green-500" : "text-red-500"}`}>
+                      <QobuzIcon className="w-5 h-5" />
+                    </div>
+                  </TooltipTrigger>
+                  <TooltipContent>
+                    <p>Qobuz</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">
@@ -68,7 +127,7 @@ 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}
@@ -82,30 +141,51 @@ export function TrackInfo({
                     </>
                   )}
                 </Button>
+                {track.spotify_id && onCheckAvailability && (
+                  <Tooltip>
+                    <TooltipTrigger asChild>
+                      <Button
+                        onClick={() => onCheckAvailability(track.spotify_id!, track.isrc)}
+                        variant="outline"
+                        disabled={checkingAvailability}
+                      >
+                        {checkingAvailability ? (
+                          <Spinner />
+                        ) : (
+                          <Globe className="h-4 w-4" />
+                        )}
+                      </Button>
+                    </TooltipTrigger>
+                    <TooltipContent>
+                      <p>Check Availability</p>
+                    </TooltipContent>
+                  </Tooltip>
+                )}
                 {track.spotify_id && onDownloadLyrics && (
-                  <Button
+                  <Tooltip>
-                    onClick={() => onDownloadLyrics(track.spotify_id!, track.name, track.artists, track.album_name)}
+                    <TooltipTrigger asChild>
-                    variant="secondary"
+                      <Button
-                    disabled={downloadingLyricsTrack === track.spotify_id}
+                        onClick={() => onDownloadLyrics(track.spotify_id!, track.name, track.artists, track.album_name)}
-                  >
+                        variant="outline"
-                    {downloadingLyricsTrack === track.spotify_id ? (
+                        disabled={downloadingLyricsTrack === track.spotify_id}
-                      <Spinner />
+                      >
-                    ) : (
+                        {downloadingLyricsTrack === track.spotify_id ? (
-                      <>
+                          <Spinner />
-                        <FileText className="h-4 w-4" />
+                        ) : skippedLyrics ? (
-                        Download Lyric
+                          <SkipForward className="h-4 w-4 text-yellow-500" />
-                        {skippedLyrics && (
+                        ) : downloadedLyrics ? (
-                          <SkipForward className="h-4 w-4 text-yellow-500 ml-1" />
+                          <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" />
                         )}
-                        {downloadedLyrics && !skippedLyrics && (
+                      </Button>
-                          <CheckCircle className="h-4 w-4 text-green-500 ml-1" />
+                    </TooltipTrigger>
-                        )}
+                    <TooltipContent>
-                        {failedLyrics && (
+                      <p>Download Lyric</p>
-                          <XCircle className="h-4 w-4 text-red-500 ml-1" />
+                    </TooltipContent>
-                        )}
+                  </Tooltip>
-                      </>
-                    )}
-                  </Button>
                 )}
                 {isDownloaded && (
                   <Button onClick={onOpenFolder} variant="outline">

frontend/src/components/TrackList.tsx

@@ -1,6 +1,6 @@
 import { Button } from "@/components/ui/button";
 import { Checkbox } from "@/components/ui/checkbox";
-import { Download, CheckCircle, XCircle, SkipForward, FileText } from "lucide-react";
+import { Download, CheckCircle, XCircle, SkipForward, FileText, Globe } from "lucide-react";
 import { Spinner } from "@/components/ui/spinner";
 import {
   Tooltip,
@@ -15,7 +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[];
@@ -38,10 +39,14 @@ interface TrackListProps {
   failedLyrics?: Set<string>;
   skippedLyrics?: Set<string>;
   downloadingLyricsTrack?: string | null;
+  // Availability props
+  checkingAvailabilityTrack?: string | null;
+  availabilityMap?: Map<string, TrackAvailability>;
   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) => void;
+  onDownloadLyrics?: (spotifyId: string, name: string, artists: string, albumName: string, folderName?: string, isArtistDiscography?: boolean, position?: number) => void;
+  onCheckAvailability?: (spotifyId: string, isrc?: 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;
@@ -68,10 +73,13 @@ export function TrackList({
   failedLyrics,
   skippedLyrics,
   downloadingLyricsTrack,
+  checkingAvailabilityTrack,
+  availabilityMap,
   onToggleTrack,
   onToggleSelectAll,
   onDownloadTrack,
   onDownloadLyrics,
+  onCheckAvailability,
   onPageChange,
   onAlbumClick,
   onArtistClick,
@@ -296,12 +304,44 @@ export function TrackList({
                           )}
                         </Button>
                       )}
+                      {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"}`} />
+                                <AmazonIcon className={`w-4 h-4 ${availabilityMap.get(track.spotify_id)?.amazon ? "text-green-500" : "text-red-500"}`} />
+                                <QobuzIcon className={`w-4 h-4 ${availabilityMap.get(track.spotify_id)?.qobuz ? "text-green-500" : "text-red-500"}`} />
+                              </div>
+                            ) : (
+                              <p>Check Availability</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)
+                                onDownloadLyrics(track.spotify_id!, track.name, track.artists, track.album_name, folderName, isArtistDiscography, startIndex + index + 1)
                               }
                               size="sm"
                               variant="outline"

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/useLyrics.ts

@@ -17,7 +17,8 @@ export function useLyrics() {
     artistName: string,
     albumName?: string,
     playlistName?: string,
-    isArtistDiscography?: boolean
+    isArtistDiscography?: boolean,
+    position?: number
   ) => {
     if (!spotifyId) {
       toast.error("No Spotify ID found for this track");
@@ -55,6 +56,10 @@ export function useLyrics() {
         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) {

frontend/src/types/api.ts

@@ -172,6 +172,10 @@ export interface LyricsDownloadRequest {
   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 {
@@ -182,4 +186,16 @@ export interface LyricsDownloadResponse {
   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;
+}
+
 

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,
 		},

wails.json

@@ -12,7 +12,7 @@
   },
   "info": {
     "productName": "SpotiFLAC",
-    "productVersion": "6.3"
+    "productVersion": "6.4"
   },
   "wailsjsdir": "./frontend",
   "assetdir": "./frontend/dist",