v7.1.6

.github/workflows/build.yml

@@ -81,13 +81,13 @@ jobs:
       - name: Prepare artifacts
         run: |
           mkdir -p dist
-          Compress-Archive -Path "build\bin\SpotiFLAC.exe" -DestinationPath "dist\spotiflac-windows.zip" -Force
+          Copy-Item -Path "build\bin\SpotiFLAC.exe" -Destination "dist\SpotiFLAC.exe"
 
       - name: Upload artifacts
         uses: actions/upload-artifact@v4
         with:
-          name: windows-bundle
-          path: dist/spotiflac-windows.zip
+          name: windows-portable
+          path: dist/SpotiFLAC.exe
           retention-days: 7
 
   build-macos:
@@ -147,33 +147,56 @@ jobs:
       - name: Build application
         run: wails build -platform darwin/universal
 
-      - name: Create macOS bundle
+      - name: Create DMG
         run: |
           mkdir -p dist
-          ditto -c -k --sequesterRsrc --keepParent "build/bin/SpotiFLAC.app" "dist/spotiflac-macos-bundle.zip"
+          # Install create-dmg if not available
+          brew install create-dmg || true
+
+          # Create DMG
+          create-dmg \
+            --volname "SpotiFLAC" \
+            --window-pos 200 120 \
+            --window-size 600 400 \
+            --icon-size 100 \
+            --icon "SpotiFLAC.app" 175 120 \
+            --hide-extension "SpotiFLAC.app" \
+            --app-drop-link 425 120 \
+            "dist/SpotiFLAC.dmg" \
+            "build/bin/SpotiFLAC.app" || \
+          # Fallback to hdiutil if create-dmg fails
+          hdiutil create -volname SpotiFLAC -srcfolder build/bin/SpotiFLAC.app -ov -format UDZO dist/SpotiFLAC.dmg
 
       - name: Upload artifacts
         uses: actions/upload-artifact@v4
         with:
-          name: macos-bundle
-          path: dist/spotiflac-macos-bundle.zip
+          name: macos-portable
+          path: dist/SpotiFLAC.dmg
           retention-days: 7
 
   build-linux:
-    name: Build Linux (${{ matrix.arch }})
+    name: Build Linux (${{ matrix.display_name }})
     runs-on: ${{ matrix.runner }}
     strategy:
       fail-fast: false
       matrix:
         include:
-          - arch: amd64
-            goarch: amd64
+          - display_name: amd64
             runner: ubuntu-24.04
+            wails_platform: linux/amd64
+            artifact_name: linux-portable
+            output_name: SpotiFLAC.AppImage
             appimage_arch: x86_64
-          - arch: arm64
-            goarch: arm64
+            appimagetool_arch: x86_64
+            pkgconfig_dir: /usr/lib/x86_64-linux-gnu/pkgconfig
+          - display_name: arm64
             runner: ubuntu-24.04-arm
+            wails_platform: linux/arm64
+            artifact_name: linux-portable-arm
+            output_name: SpotiFLAC-ARM.AppImage
             appimage_arch: aarch64
+            appimagetool_arch: aarch64
+            pkgconfig_dir: /usr/lib/aarch64-linux-gnu/pkgconfig
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
@@ -219,15 +242,10 @@ jobs:
       - name: Install dependencies
         run: |
           sudo apt-get update
-          PACKAGES="libgtk-3-dev libwebkit2gtk-4.1-dev libfuse2 imagemagick"
-          if [ "${{ matrix.goarch }}" = "amd64" ]; then
-            PACKAGES="$PACKAGES upx-ucl"
-          fi
-          sudo apt-get install -y $PACKAGES
+          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)
-          MULTIARCH="$(dpkg-architecture -qDEB_HOST_MULTIARCH)"
-          sudo ln -sf "/usr/lib/${MULTIARCH}/pkgconfig/webkit2gtk-4.1.pc" "/usr/lib/${MULTIARCH}/pkgconfig/webkit2gtk-4.0.pc"
+          sudo ln -sf "${{ matrix.pkgconfig_dir }}/webkit2gtk-4.1.pc" "${{ matrix.pkgconfig_dir }}/webkit2gtk-4.0.pc"
 
       - name: Install Wails CLI
         run: go install github.com/wailsapp/wails/v2/cmd/wails@latest
@@ -239,10 +257,9 @@ jobs:
           pnpm run generate-icon
 
       - name: Build application
-        run: wails build -platform linux/${{ matrix.goarch }}
+        run: wails build -platform ${{ matrix.wails_platform }}
 
       - name: Compress with UPX
-        if: matrix.goarch == 'amd64'
         run: |
           upx --best --lzma build/bin/SpotiFLAC
 
@@ -251,13 +268,13 @@ jobs:
         uses: actions/cache@v4
         with:
           path: appimagetool
-          key: appimagetool-${{ matrix.appimage_arch }}-v1
+          key: appimagetool-${{ matrix.appimagetool_arch }}-v2
 
       - name: Download appimagetool
         if: steps.cache-appimagetool.outputs.cache-hit != 'true'
         run: |
-          wget --timeout=30 --tries=5 --retry-connrefused --waitretry=5 -O appimagetool https://github.com/AppImage/appimagetool/releases/download/continuous/appimagetool-${{ matrix.appimage_arch }}.AppImage || \
-          wget --timeout=30 --tries=5 --retry-connrefused --waitretry=5 -O appimagetool https://github.com/AppImage/appimagetool/releases/download/1.9.1/appimagetool-${{ matrix.appimage_arch }}.AppImage
+          wget --timeout=30 --tries=5 --retry-connrefused --waitretry=5 -O appimagetool "https://github.com/AppImage/appimagetool/releases/download/continuous/appimagetool-${{ matrix.appimagetool_arch }}.AppImage" || \
+          wget --timeout=30 --tries=5 --retry-connrefused --waitretry=5 -O appimagetool "https://github.com/AppImage/appimagetool/releases/download/1.9.1/appimagetool-${{ matrix.appimagetool_arch }}.AppImage"
 
       - name: Make appimagetool executable
         run: chmod +x appimagetool
@@ -312,18 +329,13 @@ jobs:
 
           # Create AppImage
           mkdir -p dist
-          if [ "${{ matrix.goarch }}" = "arm64" ]; then
-            RELEASE_ARCH="arm64v8"
-          else
-            RELEASE_ARCH="amd64"
-          fi
-          ARCH=${{ matrix.appimage_arch }} ./appimagetool --no-appstream AppDir "dist/SpotiFLAC-${RELEASE_ARCH}.AppImage"
+          ARCH=${{ matrix.appimage_arch }} ./appimagetool --no-appstream AppDir "dist/${{ matrix.output_name }}"
 
       - name: Upload artifacts
         uses: actions/upload-artifact@v4
         with:
-          name: linux-appimage-${{ matrix.arch }}
-          path: dist/*.AppImage
+          name: ${{ matrix.artifact_name }}
+          path: dist/${{ matrix.output_name }}
           retention-days: 7
 
   create-release:
@@ -351,13 +363,6 @@ jobs:
       - name: Display structure of downloaded files
         run: ls -R artifacts
 
-      - name: Create Linux bundle
-        run: |
-          mkdir -p release/SpotiFLAC-linux-bundle
-          cp artifacts/linux-appimage-amd64/*.AppImage release/SpotiFLAC-linux-bundle/
-          cp artifacts/linux-appimage-arm64/*.AppImage release/SpotiFLAC-linux-bundle/
-          tar -czf release/spotiflac-linux-bundle.tar.gz -C release SpotiFLAC-linux-bundle
-
       - name: Create Release
         uses: softprops/action-gh-release@v2
         with:
@@ -369,20 +374,16 @@ jobs:
 
             ## Downloads
 
-            - `spotiflac-windows.zip` - amd64
-            - `spotiflac-macos-bundle.zip` - amd64 + arm64
-            - `spotiflac-linux-bundle.tar.gz` - amd64 + arm64v8
+            - `SpotiFLAC.exe` - Windows
+            - `SpotiFLAC.dmg` - macOS
+            - `SpotiFLAC.AppImage` - Linux AMD64
+            - `SpotiFLAC-ARM.AppImage` - Linux ARM64
 
             <details>
             <summary><b>Linux Requirements</b></summary>
 
             The AppImage requires `webkit2gtk-4.1` to be installed on your system:
 
-            Choose the correct AppImage after extracting the bundle:
-
-            - `SpotiFLAC-amd64.AppImage` - amd64
-            - `SpotiFLAC-arm64v8.AppImage` - arm64v8
-
             **Ubuntu/Debian:**
             ```bash
             sudo apt install libwebkit2gtk-4.1-0
@@ -400,14 +401,21 @@ jobs:
 
             After installing the dependency, make the AppImage executable:
             ```bash
-            tar -xzf spotiflac-linux-bundle.tar.gz
-            chmod +x SpotiFLAC-*.AppImage
+            chmod +x SpotiFLAC.AppImage
+            ./SpotiFLAC.AppImage
+            ```
+
+            For ARM64:
+            ```bash
+            chmod +x SpotiFLAC-ARM.AppImage
+            ./SpotiFLAC-ARM.AppImage
             ```
 
             </details>
           files: |
-            artifacts/windows-bundle/*.zip
-            artifacts/macos-bundle/*.zip
-            release/spotiflac-linux-bundle.tar.gz
+            artifacts/windows-portable/SpotiFLAC.exe
+            artifacts/macos-portable/SpotiFLAC.dmg
+            artifacts/linux-portable/SpotiFLAC.AppImage
+            artifacts/linux-portable-arm/SpotiFLAC-ARM.AppImage
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

README.md

@@ -20,10 +20,6 @@ Get Spotify tracks in true FLAC from Tidal, Qobuz & Amazon Music — no account
 
 Get Spotify tracks in true Lossless from Tidal, Qobuz, Amazon Music, Deezer & Apple Music — no account required.
 
-### [SpotiDownloader](https://github.com/spotbye/SpotiDownloader)
-
-Get Spotify tracks, albums, playlists and discography in MP3 and FLAC.
-
 ### [SpotubeDL.com](https://spotubedl.com)
 
 Download Spotify Tracks, Albums, Playlists & Discography as MP3/OGG/Opus.
@@ -112,7 +108,7 @@ The software is provided "as is", without warranty of any kind. The author assum
 
 ## API Credits
 
-[MusicBrainz](https://musicbrainz.org) · [LRCLIB](https://lrclib.net) · [Songlink/Odesli](https://song.link) · [hifi-api](https://github.com/binimum/hifi-api) · [dabmusic.xyz](https://dabmusic.xyz)
+[MusicBrainz](https://musicbrainz.org) · [LRCLIB](https://lrclib.net) · [Songlink/Odesli](https://song.link) · [hifi-api](https://github.com/binimum/hifi-api) · [dabmusic.xyz](https://dabmusic.xyz) · [musicdl.me](https://musicdl.me)
 
 > [!TIP]
 >

app.go

@@ -34,14 +34,6 @@ type CurrentIPInfo struct {
 }
 
 const checkOperationTimeout = 10 * time.Second
-const unifiedStatusAPIURL = "https://api-status.afkarxyz.qzz.io/api/status/spotiflac/"
-const unifiedStatusCacheTTL = 5 * time.Second
-
-var (
-	unifiedStatusCacheMu     sync.Mutex
-	unifiedStatusCacheBody   string
-	unifiedStatusCacheExpiry time.Time
-)
 
 func NewApp() *App {
 	return &App{}
@@ -152,60 +144,6 @@ func previewResponseBody(body []byte, maxLen int) string {
 	return preview
 }
 
-func fetchUnifiedStatusPayload(forceRefresh bool, endpoint string) (string, error) {
-	unifiedStatusCacheMu.Lock()
-	defer unifiedStatusCacheMu.Unlock()
-
-	if !forceRefresh && unifiedStatusCacheBody != "" && time.Now().Before(unifiedStatusCacheExpiry) {
-		return unifiedStatusCacheBody, nil
-	}
-
-	client := &http.Client{Timeout: 10 * time.Second}
-	maxRetries := 3
-	var lastErr error
-
-	for i := 0; i < maxRetries; i++ {
-		req, err := http.NewRequest(http.MethodGet, endpoint, nil)
-		if err != nil {
-			return "", fmt.Errorf("failed to create unified status request: %w", err)
-		}
-		req.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.36")
-		req.Header.Set("Accept", "application/json")
-
-		resp, err := client.Do(req)
-		if err == nil {
-			body, readErr := io.ReadAll(resp.Body)
-			resp.Body.Close()
-			if readErr != nil {
-				lastErr = fmt.Errorf("attempt %d: failed reading response: %w", i+1, readErr)
-			} else if resp.StatusCode != http.StatusOK {
-				lastErr = fmt.Errorf("attempt %d: returned status %d (%s)", i+1, resp.StatusCode, previewResponseBody(body, 200))
-			} else {
-				payload := strings.TrimSpace(string(body))
-				if payload == "" {
-					lastErr = fmt.Errorf("attempt %d: empty response body", i+1)
-				} else {
-					unifiedStatusCacheBody = payload
-					unifiedStatusCacheExpiry = time.Now().Add(unifiedStatusCacheTTL)
-					return payload, nil
-				}
-			}
-		} else {
-			lastErr = fmt.Errorf("attempt %d: connection failed: %w", i+1, err)
-		}
-
-		if i < maxRetries-1 {
-			time.Sleep(1 * time.Second)
-		}
-	}
-
-	if lastErr == nil {
-		lastErr = fmt.Errorf("unknown error")
-	}
-
-	return "", fmt.Errorf("unified status API failed after %d retries: %w", maxRetries, lastErr)
-}
-
 func fetchCurrentIPInfo() (CurrentIPInfo, error) {
 	type ipwhoisResponse struct {
 		Success     bool   `json:"success"`
@@ -313,10 +251,6 @@ func (a *App) GetCurrentIPInfo() (string, error) {
 	return string(payload), nil
 }
 
-func (a *App) FetchUnifiedAPIStatus(forceRefresh bool) (string, error) {
-	return fetchUnifiedStatusPayload(forceRefresh, unifiedStatusAPIURL)
-}
-
 func (a *App) getFirstArtist(artistString string) string {
 	if artistString == "" {
 		return ""
@@ -342,6 +276,11 @@ func (a *App) startup(ctx context.Context) {
 	if err := backend.InitProviderPriorityDB(); err != nil {
 		fmt.Printf("Failed to init provider priority DB: %v\n", err)
 	}
+	go func() {
+		if err := backend.PrimeTidalAPIList(); err != nil {
+			fmt.Printf("Failed to prime Tidal API list: %v\n", err)
+		}
+	}()
 }
 
 func (a *App) shutdown(ctx context.Context) {
@@ -568,7 +507,8 @@ func (a *App) DownloadTrack(req DownloadRequest) (DownloadResponse, error) {
 	if req.FilenameFormat == "" {
 		req.FilenameFormat = "title-artist"
 	}
-	if req.ISRC == "" && strings.Contains(req.FilenameFormat, "{isrc}") && req.SpotifyID != "" {
+	shouldResolveISRC := strings.Contains(req.FilenameFormat, "{isrc}") || backend.GetExistingFileCheckModeSetting() == "isrc"
+	if req.ISRC == "" && shouldResolveISRC && req.SpotifyID != "" {
 		req.ISRC = backend.ResolveTrackISRC(req.SpotifyID)
 	}
 
@@ -850,6 +790,8 @@ func (a *App) DownloadTrack(req DownloadRequest) (DownloadResponse, error) {
 			backend.CompleteDownloadItem(itemID, filename, 0)
 		}
 
+		historySource := req.Service
+
 		go func(fPath, track, artist, album, sID, cover, format, source string) {
 			time.Sleep(2 * time.Second)
 
@@ -877,25 +819,25 @@ func (a *App) DownloadTrack(req DownloadRequest) (DownloadResponse, error) {
 				DurationStr: durationStr,
 				CoverURL:    cover,
 				Quality:     quality,
-				Format:      strings.ToUpper(format),
 				Path:        fPath,
 				Source:      source,
 			}
 
-			if item.Format == "" || item.Format == "LOSSLESS" {
-				ext := filepath.Ext(fPath)
-				if len(ext) > 1 {
+			item.Format = strings.ToUpper(strings.TrimSpace(format))
+
+			if ext := filepath.Ext(fPath); len(ext) > 1 {
 				item.Format = strings.ToUpper(ext[1:])
 			}
-			}
 
 			switch item.Format {
-			case "6", "7", "27":
+			case "6", "7", "27", "LOSSLESS", "HI_RES", "HI_RES_LOSSLESS":
 				item.Format = "FLAC"
+			case "ALAC", "APPLE", "ATMOS", "M4A-AAC", "M4A-ALAC":
+				item.Format = "M4A"
 			}
 
 			backend.AddHistoryItem(item, "SpotiFLAC")
-		}(filename, req.TrackName, req.ArtistName, req.AlbumName, req.SpotifyID, req.CoverURL, req.AudioFormat, req.Service)
+		}(filename, req.TrackName, req.ArtistName, req.AlbumName, req.SpotifyID, req.CoverURL, req.AudioFormat, historySource)
 	}
 
 	return DownloadResponse{
@@ -1042,70 +984,28 @@ func (a *App) ExportFailedDownloads() (string, error) {
 
 func (a *App) CheckAPIStatus(apiType string, apiURL string) bool {
 	isOnline, err := runWithTimeout(checkOperationTimeout, func() (bool, error) {
-		var checkURL string
-		if apiType == "tidal" {
-			checkURL = fmt.Sprintf("%s/track/?id=441821360&quality=HI_RES_LOSSLESS", apiURL)
-		} else if apiType == "qobuz" {
-			checkURL = fmt.Sprintf("%s/api/stream?trackId=360735657&quality=27", apiURL)
-		} else if apiType == "qbz" {
-			checkURL = fmt.Sprintf("%s/api/track/360735657?quality=27", apiURL)
-		} else if apiType == "amazon" {
-			checkURL = fmt.Sprintf("%s/status", apiURL)
-		} else if apiType == "lrclib" {
-			checkURL = fmt.Sprintf("%s/api/search?artist_name=Adele&track_name=Hello", strings.TrimRight(apiURL, "/"))
-		} else if apiType == "musicbrainz" {
-			checkURL = fmt.Sprintf("%s/ws/2/recording?query=%s&fmt=json&limit=1", strings.TrimRight(apiURL, "/"), url.QueryEscape(`recording:"Hello" AND artist:"Adele"`))
-		} else {
-			checkURL = apiURL
-		}
-
-		client := &http.Client{Timeout: 10 * time.Second}
-		req, err := http.NewRequest("GET", checkURL, nil)
-		if err != nil {
-			return false, err
-		}
-		req.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36")
-		req.Header.Set("Accept", "application/json")
-
-		maxRetries := 3
-		for i := 0; i < maxRetries; i++ {
-			resp, err := client.Do(req)
-			if err == nil {
-				statusCode := resp.StatusCode
-				body, readErr := io.ReadAll(resp.Body)
-				resp.Body.Close()
-				if readErr != nil {
-					if i < maxRetries-1 {
-						time.Sleep(1 * time.Second)
-					}
-					continue
-				}
-
-				if apiType == "amazon" && statusCode == 200 && strings.Contains(string(body), `"amazonMusic":"up"`) {
+		switch apiType {
+		case "tidal":
+			if checkGroupedAPIStatus("tidal", buildTidalStatusCheckURLs(apiURL)) {
 				return true, nil
 			}
-
-				if (apiType == "qobuz" || apiType == "qbz") && statusCode == 200 && containsStreamingURL(body) {
+			if strings.TrimSpace(apiURL) == "" {
+				if _, refreshErr := backend.RefreshTidalAPIList(true); refreshErr == nil && checkGroupedAPIStatus("tidal", buildTidalStatusCheckURLs("")) {
 					return true, nil
 				}
-
-				if apiType == "lrclib" && statusCode == 200 && containsLRCLIBResults(body) {
-					return true, nil
-				}
-
-				if apiType == "musicbrainz" && statusCode == 200 && containsMusicBrainzResults(body) {
-					return true, nil
-				}
-
-				if apiType != "amazon" && apiType != "qobuz" && apiType != "qbz" && apiType != "lrclib" && apiType != "musicbrainz" && statusCode == 200 {
-					return true, nil
-				}
-			}
-			if i < maxRetries-1 {
-				time.Sleep(1 * time.Second)
-			}
 			}
 			return false, nil
+		case "qobuz", "qbz":
+			return checkGroupedAPIStatus("qobuz", buildQobuzStatusCheckURLs(apiURL)), nil
+		case "amazon":
+			return checkGroupedAPIStatus("amazon", buildAmazonStatusCheckURLs(apiURL)), nil
+		case "lrclib":
+			return checkGroupedAPIStatus("lrclib", buildLRCLIBStatusCheckURLs(apiURL)), nil
+		case "musicbrainz":
+			return checkGroupedAPIStatus("musicbrainz", buildMusicBrainzStatusCheckURLs(apiURL)), nil
+		default:
+			return checkGroupedAPIStatus(apiType, []string{strings.TrimSpace(apiURL)}), nil
+		}
 	})
 	if err != nil {
 		if apiType == "musicbrainz" {
@@ -1122,6 +1022,234 @@ func (a *App) CheckAPIStatus(apiType string, apiURL string) bool {
 	return isOnline
 }
 
+func (a *App) CheckCustomTidalAPI(apiURL string) bool {
+	type tidalProbeResponse struct {
+		Version string `json:"version"`
+		Data    struct {
+			TrackID           int64  `json:"trackId"`
+			AssetPresentation string `json:"assetPresentation"`
+			ManifestMimeType  string `json:"manifestMimeType"`
+			Manifest          string `json:"manifest"`
+		} `json:"data"`
+	}
+	type tidalLegacyResponse struct {
+		OriginalTrackURL string `json:"OriginalTrackUrl"`
+	}
+
+	apiURL = strings.TrimRight(strings.TrimSpace(apiURL), "/")
+	if apiURL == "" {
+		return false
+	}
+
+	const probeTrackID int64 = 441821360
+	probeURL := fmt.Sprintf("%s/track/?id=%d&quality=LOSSLESS", apiURL, probeTrackID)
+
+	req, err := http.NewRequest(http.MethodGet, probeURL, nil)
+	if err != nil {
+		fmt.Printf("[CheckCustomTidalAPI] Failed to create request for %s: %v\n", apiURL, err)
+		return false
+	}
+	req.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.36")
+	req.Header.Set("Accept", "application/json")
+
+	client := &http.Client{Timeout: 12 * time.Second}
+	resp, err := client.Do(req)
+	if err != nil {
+		fmt.Printf("[CheckCustomTidalAPI] Probe request failed for %s: %v\n", apiURL, err)
+		return false
+	}
+	defer resp.Body.Close()
+
+	body, err := io.ReadAll(io.LimitReader(resp.Body, 64*1024))
+	if err != nil {
+		fmt.Printf("[CheckCustomTidalAPI] Failed to read probe response for %s: %v\n", apiURL, err)
+		return false
+	}
+	if resp.StatusCode != http.StatusOK {
+		fmt.Printf("[CheckCustomTidalAPI] Probe returned status %d for %s: %s\n", resp.StatusCode, apiURL, previewResponseBody(body, 200))
+		return false
+	}
+
+	var probe tidalProbeResponse
+	if err := json.Unmarshal(body, &probe); err == nil {
+		assetPresentation := strings.ToUpper(strings.TrimSpace(probe.Data.AssetPresentation))
+		switch assetPresentation {
+		case "FULL":
+			if strings.TrimSpace(probe.Data.Manifest) != "" {
+				fmt.Printf("[CheckCustomTidalAPI] Tidal API is ONLINE for %s (assetPresentation=%s)\n", apiURL, assetPresentation)
+				return true
+			}
+			fmt.Printf("[CheckCustomTidalAPI] Probe returned FULL without manifest for %s\n", apiURL)
+			return false
+		case "PREVIEW":
+			fmt.Printf("[CheckCustomTidalAPI] Probe returned PREVIEW for %s\n", apiURL)
+			return false
+		case "":
+
+		default:
+			fmt.Printf("[CheckCustomTidalAPI] Probe returned unsupported assetPresentation=%s for %s\n", assetPresentation, apiURL)
+			return false
+		}
+	}
+
+	var legacy []tidalLegacyResponse
+	if err := json.Unmarshal(body, &legacy); err == nil {
+		for _, item := range legacy {
+			if strings.TrimSpace(item.OriginalTrackURL) != "" {
+				fmt.Printf("[CheckCustomTidalAPI] Tidal API is ONLINE for %s (legacy response)\n", apiURL)
+				return true
+			}
+		}
+	}
+
+	fmt.Printf("[CheckCustomTidalAPI] Probe response was unusable for %s: %s\n", apiURL, previewResponseBody(body, 200))
+	return false
+}
+
+func buildTidalStatusCheckURLs(apiURL string) []string {
+	apiURL = strings.TrimRight(strings.TrimSpace(apiURL), "/")
+	if apiURL != "" {
+		return []string{fmt.Sprintf("%s/track/?id=441821360&quality=HI_RES_LOSSLESS", apiURL)}
+	}
+
+	apis, err := backend.GetRotatedTidalAPIList()
+	if err != nil {
+		fmt.Printf("Warning: failed to load rotated Tidal API list for status check: %v\n", err)
+	}
+
+	urls := make([]string, 0, len(apis))
+	for _, baseURL := range apis {
+		baseURL = strings.TrimRight(strings.TrimSpace(baseURL), "/")
+		if baseURL == "" {
+			continue
+		}
+		urls = append(urls, fmt.Sprintf("%s/track/?id=441821360&quality=HI_RES_LOSSLESS", baseURL))
+	}
+
+	return urls
+}
+
+func buildQobuzStatusCheckURLs(apiURL string) []string {
+	if trimmed := strings.TrimSpace(apiURL); trimmed != "" {
+		return []string{buildQobuzStatusCheckURL(trimmed)}
+	}
+
+	bases := backend.GetQobuzStreamAPIBaseURLs()
+	urls := make([]string, 0, len(bases)+1)
+	for _, baseURL := range bases {
+		urls = append(urls, buildQobuzStatusCheckURL(baseURL))
+	}
+	if musicDLURL := strings.TrimSpace(backend.GetQobuzMusicDLDownloadAPIURL()); musicDLURL != "" {
+		urls = append(urls, musicDLURL)
+	}
+	return urls
+}
+
+func buildQobuzStatusCheckURL(apiBase string) string {
+	apiBase = strings.TrimSpace(apiBase)
+	return fmt.Sprintf("%s360735657&quality=27", apiBase)
+}
+
+func buildAmazonStatusCheckURLs(apiURL string) []string {
+	baseURL := strings.TrimRight(strings.TrimSpace(apiURL), "/")
+	if baseURL == "" {
+		baseURL = backend.GetAmazonMusicAPIBaseURL()
+	}
+	return []string{fmt.Sprintf("%s/status", baseURL)}
+}
+
+func buildLRCLIBStatusCheckURLs(apiURL string) []string {
+	baseURL := strings.TrimRight(strings.TrimSpace(apiURL), "/")
+	if baseURL == "" {
+		baseURL = "https://lrclib.net"
+	}
+	return []string{fmt.Sprintf("%s/api/search?artist_name=Adele&track_name=Hello", baseURL)}
+}
+
+func buildMusicBrainzStatusCheckURLs(apiURL string) []string {
+	baseURL := strings.TrimRight(strings.TrimSpace(apiURL), "/")
+	if baseURL == "" {
+		baseURL = "https://musicbrainz.org"
+	}
+	return []string{fmt.Sprintf("%s/ws/2/recording?query=%s&fmt=json&limit=1", baseURL, url.QueryEscape(`recording:"Hello" AND artist:"Adele"`))}
+}
+
+func checkGroupedAPIStatus(apiType string, checkURLs []string) bool {
+	filtered := make([]string, 0, len(checkURLs))
+	for _, rawURL := range checkURLs {
+		url := strings.TrimSpace(rawURL)
+		if url == "" {
+			continue
+		}
+		filtered = append(filtered, url)
+	}
+
+	if len(filtered) == 0 {
+		return false
+	}
+
+	results := make(chan bool, len(filtered))
+	var wg sync.WaitGroup
+
+	for _, checkURL := range filtered {
+		wg.Add(1)
+		go func(target string) {
+			defer wg.Done()
+			results <- checkSingleAPIStatus(apiType, target)
+		}(checkURL)
+	}
+
+	go func() {
+		wg.Wait()
+		close(results)
+	}()
+
+	for online := range results {
+		if online {
+			return true
+		}
+	}
+
+	return false
+}
+
+func checkSingleAPIStatus(apiType string, checkURL string) bool {
+	client := &http.Client{Timeout: 4 * time.Second}
+	if (apiType == "qobuz" || apiType == "qbz") && strings.EqualFold(strings.TrimSpace(checkURL), strings.TrimSpace(backend.GetQobuzMusicDLDownloadAPIURL())) {
+		return backend.CheckQobuzMusicDLStatus(client)
+	}
+
+	req, err := backend.NewRequestWithDefaultHeaders(http.MethodGet, checkURL, nil)
+	if err != nil {
+		return false
+	}
+
+	resp, err := client.Do(req)
+	if err != nil {
+		return false
+	}
+	defer resp.Body.Close()
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return false
+	}
+
+	statusCode := resp.StatusCode
+	switch apiType {
+	case "amazon":
+		return statusCode == http.StatusOK && strings.Contains(string(body), `"amazonMusic":"up"`)
+	case "qobuz", "qbz":
+		return statusCode == http.StatusOK && containsStreamingURL(body)
+	case "lrclib":
+		return statusCode == http.StatusOK && containsLRCLIBResults(body)
+	case "musicbrainz":
+		return statusCode == http.StatusOK && containsMusicBrainzResults(body)
+	default:
+		return statusCode == http.StatusOK
+	}
+}
+
 func (a *App) Quit() {
 
 	panic("quit")
@@ -1686,6 +1814,68 @@ type CheckFileExistenceResult struct {
 	ArtistName string `json:"artist_name,omitempty"`
 }
 
+type existingFileLookupIndex struct {
+	byFilename map[string]string
+	byISRC     map[string]string
+}
+
+func isAudioFileForExistenceCheck(path string) bool {
+	switch strings.ToLower(filepath.Ext(path)) {
+	case ".flac", ".mp3", ".m4a":
+		return true
+	default:
+		return false
+	}
+}
+
+func normalizeExistingFileIdentifier(value string) string {
+	return strings.ToUpper(strings.TrimSpace(value))
+}
+
+func buildExistingFileLookupIndex(scanRoot string, mode string) existingFileLookupIndex {
+	index := existingFileLookupIndex{
+		byFilename: make(map[string]string),
+		byISRC:     make(map[string]string),
+	}
+
+	scanRoot = backend.NormalizePath(scanRoot)
+	if scanRoot == "" {
+		return index
+	}
+
+	_ = filepath.Walk(scanRoot, func(path string, info os.FileInfo, err error) error {
+		if err != nil || info == nil || info.IsDir() || !isAudioFileForExistenceCheck(path) {
+			return nil
+		}
+		if info.Size() <= 100*1024 {
+			return nil
+		}
+
+		if _, exists := index.byFilename[info.Name()]; !exists {
+			index.byFilename[info.Name()] = path
+		}
+
+		if mode == "filename" {
+			return nil
+		}
+
+		metadata, metadataErr := backend.ExtractFullMetadataFromFile(path)
+		if metadataErr != nil {
+			return nil
+		}
+
+		if normalizedISRC := normalizeExistingFileIdentifier(metadata.ISRC); normalizedISRC != "" {
+			if _, exists := index.byISRC[normalizedISRC]; !exists {
+				index.byISRC[normalizedISRC] = path
+			}
+		}
+
+		return nil
+	})
+
+	return index
+}
+
 func (a *App) CheckFilesExistence(outputDir string, rootDir string, tracks []CheckFileExistenceRequest) []CheckFileExistenceResult {
 	if len(tracks) == 0 {
 		return []CheckFileExistenceResult{}
@@ -1698,6 +1888,11 @@ func (a *App) CheckFilesExistence(outputDir string, rootDir string, tracks []Che
 
 	defaultFilenameFormat := "title-artist"
 	redownloadWithSuffix := backend.GetRedownloadWithSuffixSetting()
+	existingFileCheckMode := backend.GetExistingFileCheckModeSetting()
+	scanRoot := outputDir
+	if rootDir != "" {
+		scanRoot = rootDir
+	}
 
 	type result struct {
 		index  int
@@ -1705,29 +1900,13 @@ func (a *App) CheckFilesExistence(outputDir string, rootDir string, tracks []Che
 	}
 
 	resultsChan := make(chan result, len(tracks))
-
-	var rootDirFiles map[string]string
-	rootDirFilesOnce := false
-	getRootDirFiles := func() map[string]string {
-		if rootDirFilesOnce {
-			return rootDirFiles
-		}
-		rootDirFiles = make(map[string]string)
-		if rootDir != "" && rootDir != outputDir {
-			filepath.Walk(rootDir, func(path string, info os.FileInfo, err error) error {
-				if err != nil {
-					return nil
-				}
-				if !info.IsDir() {
-					if strings.EqualFold(filepath.Ext(path), ".flac") || strings.EqualFold(filepath.Ext(path), ".mp3") {
-						rootDirFiles[info.Name()] = path
-					}
-				}
-				return nil
+	var lookupIndex existingFileLookupIndex
+	var lookupIndexOnce sync.Once
+	getLookupIndex := func() existingFileLookupIndex {
+		lookupIndexOnce.Do(func() {
+			lookupIndex = buildExistingFileLookupIndex(scanRoot, existingFileCheckMode)
 		})
-		}
-		rootDirFilesOnce = true
-		return rootDirFiles
+		return lookupIndex
 	}
 
 	for i, track := range tracks {
@@ -1749,7 +1928,8 @@ func (a *App) CheckFilesExistence(outputDir string, rootDir string, tracks []Che
 				filenameFormat = defaultFilenameFormat
 			}
 			isrc := strings.TrimSpace(t.ISRC)
-			if isrc == "" && strings.Contains(filenameFormat, "{isrc}") && t.SpotifyID != "" {
+			shouldResolveISRC := existingFileCheckMode == "isrc" || strings.Contains(filenameFormat, "{isrc}")
+			if isrc == "" && shouldResolveISRC && t.SpotifyID != "" {
 				isrc = backend.ResolveTrackISRC(t.SpotifyID)
 			}
 
@@ -1759,8 +1939,11 @@ func (a *App) CheckFilesExistence(outputDir string, rootDir string, tracks []Che
 			}
 
 			fileExt := ".flac"
-			if t.AudioFormat == "mp3" {
+			switch strings.ToLower(strings.TrimSpace(t.AudioFormat)) {
+			case "mp3":
 				fileExt = ".mp3"
+			case "m4a", "m4a-aac", "m4a-alac", "alac", "atmos", "apple":
+				fileExt = ".m4a"
 			}
 
 			expectedFilenameBase := backend.BuildExpectedFilename(
@@ -1789,14 +1972,29 @@ func (a *App) CheckFilesExistence(outputDir string, rootDir string, tracks []Che
 			expectedPath := filepath.Join(targetDir, expectedFilename)
 			if redownloadWithSuffix {
 				expectedPath, _ = backend.ResolveOutputPathForDownload(expectedPath, true)
-				res.FilePath = filepath.Base(expectedPath)
-			} else {
+				resultsChan <- result{index: idx, result: res}
+				return
+			}
+
+			normalizedISRC := normalizeExistingFileIdentifier(isrc)
+			effectiveMode := existingFileCheckMode
+			if effectiveMode == "isrc" && normalizedISRC == "" {
+				effectiveMode = "filename"
+			}
+
+			switch effectiveMode {
+			case "isrc":
+				if path, ok := getLookupIndex().byISRC[normalizedISRC]; ok {
+					res.Exists = true
+					res.FilePath = path
+				}
+			default:
 				if fileInfo, err := os.Stat(expectedPath); err == nil && fileInfo.Size() > 100*1024 {
 					res.Exists = true
 					res.FilePath = expectedPath
-				} else {
-
-					res.FilePath = expectedFilename
+				} else if path, ok := getLookupIndex().byFilename[filepath.Base(expectedPath)]; ok {
+					res.Exists = true
+					res.FilePath = path
 				}
 			}
 
@@ -1805,39 +2003,10 @@ func (a *App) CheckFilesExistence(outputDir string, rootDir string, tracks []Che
 	}
 
 	results := make([]CheckFileExistenceResult, len(tracks))
-	missingIndices := []int{}
 
 	for i := 0; i < len(tracks); i++ {
 		r := <-resultsChan
 		results[r.index] = r.result
-		if !results[r.index].Exists {
-			missingIndices = append(missingIndices, r.index)
-		}
-	}
-
-	if len(missingIndices) > 0 && rootDir != "" {
-		filesMap := getRootDirFiles()
-		if len(filesMap) > 0 {
-			for _, idx := range missingIndices {
-
-				expectedFilename := results[idx].FilePath
-				baseName := filepath.Base(expectedFilename)
-				if path, ok := filesMap[baseName]; ok {
-					results[idx].Exists = true
-					results[idx].FilePath = path
-				} else {
-					results[idx].FilePath = ""
-				}
-			}
-		} else {
-			for _, idx := range missingIndices {
-				results[idx].FilePath = ""
-			}
-		}
-	} else {
-		for _, idx := range missingIndices {
-			results[idx].FilePath = ""
-		}
 	}
 
 	return results
@@ -1863,6 +2032,14 @@ func (a *App) GetConfigPath() (string, error) {
 	return filepath.Join(dir, "config.json"), nil
 }
 
+func (a *App) GetFontsPath() (string, error) {
+	dir, err := backend.GetFFmpegDir()
+	if err != nil {
+		return "", err
+	}
+	return filepath.Join(dir, "fonts.json"), nil
+}
+
 func (a *App) SaveSettings(settings map[string]interface{}) error {
 	configPath, err := a.GetConfigPath()
 	if err != nil {
@@ -1884,6 +2061,27 @@ func (a *App) SaveSettings(settings map[string]interface{}) error {
 	return os.WriteFile(configPath, data, 0644)
 }
 
+func (a *App) SaveFonts(fonts []map[string]interface{}) error {
+	fontsPath, err := a.GetFontsPath()
+	if err != nil {
+		return err
+	}
+
+	dir := filepath.Dir(fontsPath)
+	if _, err := os.Stat(dir); os.IsNotExist(err) {
+		if err := os.MkdirAll(dir, 0755); err != nil {
+			return err
+		}
+	}
+
+	data, err := json.MarshalIndent(fonts, "", "  ")
+	if err != nil {
+		return err
+	}
+
+	return os.WriteFile(fontsPath, data, 0644)
+}
+
 func (a *App) LoadSettings() (map[string]interface{}, error) {
 	configPath, err := a.GetConfigPath()
 	if err != nil {
@@ -1907,6 +2105,32 @@ func (a *App) LoadSettings() (map[string]interface{}, error) {
 	return settings, nil
 }
 
+func (a *App) LoadFonts() ([]map[string]interface{}, error) {
+	fontsPath, err := a.GetFontsPath()
+	if err != nil {
+		return nil, err
+	}
+
+	if _, err := os.Stat(fontsPath); os.IsNotExist(err) {
+		return nil, nil
+	}
+
+	data, err := os.ReadFile(fontsPath)
+	if err != nil {
+		return nil, err
+	}
+
+	var fonts []map[string]interface{}
+	if err := json.Unmarshal(data, &fonts); err != nil {
+		return nil, err
+	}
+	if fonts == nil {
+		return []map[string]interface{}{}, nil
+	}
+
+	return fonts, nil
+}
+
 func (a *App) CheckFFmpegInstalled() (bool, error) {
 	return backend.IsFFmpegInstalled()
 }

backend/amazon.go

@@ -1,6 +1,9 @@
 package backend
 
 import (
+	"crypto/aes"
+	"crypto/cipher"
+	"crypto/sha256"
 	"encoding/json"
 	"fmt"
 	"io"
@@ -10,6 +13,7 @@ import (
 	"path/filepath"
 	"regexp"
 	"strings"
+	"sync"
 	"time"
 )
 
@@ -23,6 +27,76 @@ type AmazonStreamResponse struct {
 	DecryptionKey string `json:"decryptionKey"`
 }
 
+var (
+	amazonMusicDebugKeyOnce sync.Once
+	amazonMusicDebugKey     string
+	amazonMusicDebugKeyErr  error
+)
+
+var amazonMusicDebugKeySeedParts = [][]byte{
+	[]byte("spotif"),
+	[]byte("lac:am"),
+	[]byte("azon:spotbye:api:v1"),
+}
+
+var amazonMusicDebugKeyAAD = []byte{
+	0x61, 0x6d, 0x61, 0x7a, 0x6f, 0x6e, 0x7c, 0x73, 0x70, 0x6f, 0x74, 0x62,
+	0x79, 0x65, 0x7c, 0x64, 0x65, 0x62, 0x75, 0x67, 0x7c, 0x76, 0x31,
+}
+
+var amazonMusicDebugKeyNonce = []byte{
+	0x52, 0x1f, 0xa4, 0x9c, 0x13, 0x77, 0x5b, 0xe2, 0x81, 0x44, 0x90, 0x6d,
+}
+
+var amazonMusicDebugKeyCiphertext = []byte{
+	0x5b, 0xf9, 0xc1, 0x2e, 0x58, 0xf8, 0x5b, 0xc0, 0x04, 0x68, 0x7e, 0xff,
+	0x3d, 0xd6, 0x8b, 0xe3, 0x86, 0x49, 0x6c, 0xfd, 0xc1, 0x49, 0x0b, 0xfb,
+}
+
+var amazonMusicDebugKeyTag = []byte{
+	0x6c, 0x21, 0x98, 0x51, 0xf2, 0x38, 0x4b, 0x4a, 0x23, 0xe1, 0xc6, 0xd7,
+	0x65, 0x7f, 0xfb, 0xa1,
+}
+
+func getAmazonMusicDebugKey() (string, error) {
+	amazonMusicDebugKeyOnce.Do(func() {
+		hasher := sha256.New()
+		for _, part := range amazonMusicDebugKeySeedParts {
+			hasher.Write(part)
+		}
+
+		block, err := aes.NewCipher(hasher.Sum(nil))
+		if err != nil {
+			amazonMusicDebugKeyErr = err
+			return
+		}
+
+		gcm, err := cipher.NewGCM(block)
+		if err != nil {
+			amazonMusicDebugKeyErr = err
+			return
+		}
+
+		sealed := make([]byte, 0, len(amazonMusicDebugKeyCiphertext)+len(amazonMusicDebugKeyTag))
+		sealed = append(sealed, amazonMusicDebugKeyCiphertext...)
+		sealed = append(sealed, amazonMusicDebugKeyTag...)
+
+		plaintext, err := gcm.Open(nil, amazonMusicDebugKeyNonce, sealed, amazonMusicDebugKeyAAD)
+		if err != nil {
+			amazonMusicDebugKeyErr = err
+			return
+		}
+
+		amazonMusicDebugKey = string(plaintext)
+	})
+
+	if amazonMusicDebugKeyErr != nil {
+		return "", amazonMusicDebugKeyErr
+	}
+
+	return amazonMusicDebugKey, nil
+}
+
 func NewAmazonDownloader() *AmazonDownloader {
 	return &AmazonDownloader{
 		client: &http.Client{
@@ -56,12 +130,17 @@ func (a *AmazonDownloader) DownloadFromAfkarXYZ(amazonURL, outputDir, quality st
 		return "", fmt.Errorf("failed to extract ASIN from URL: %s", amazonURL)
 	}
 
-	apiURL := fmt.Sprintf("https://amzn.afkarxyz.qzz.io/api/track/%s", asin)
-	req, err := http.NewRequest("GET", apiURL, nil)
+	apiURL := fmt.Sprintf("%s/api/track/%s", amazonMusicAPIBaseURL, asin)
+	req, err := NewRequestWithDefaultHeaders(http.MethodGet, apiURL, nil)
 	if err != nil {
 		return "", err
 	}
-	req.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36")
+
+	debugKey, err := getAmazonMusicDebugKey()
+	if err != nil {
+		return "", fmt.Errorf("failed to decrypt Amazon debug key: %w", err)
+	}
+	req.Header.Set("X-Debug-Key", debugKey)
 
 	fmt.Printf("Fetching from Amazon API (ASIN: %s)...\n", asin)
 	resp, err := a.client.Do(req)
@@ -98,8 +177,10 @@ func (a *AmazonDownloader) DownloadFromAfkarXYZ(amazonURL, outputDir, quality st
 	}
 	defer out.Close()
 
-	dlReq, _ := http.NewRequest("GET", downloadURL, nil)
-	dlReq.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36")
+	dlReq, err := NewRequestWithDefaultHeaders(http.MethodGet, downloadURL, nil)
+	if err != nil {
+		return "", err
+	}
 
 	dlResp, err := a.client.Do(dlReq)
 	if err != nil {
@@ -287,6 +368,16 @@ func (a *AmazonDownloader) DownloadByURL(amazonURL, outputDir, quality, filename
 		mbMeta = result.Metadata
 	}
 
+	upc := ""
+	if spotifyURL != "" {
+		if identifiers, err := GetSpotifyTrackIdentifiersDirect(spotifyURL); err == nil || identifiers.ISRC != "" || identifiers.UPC != "" {
+			if strings.TrimSpace(isrc) == "" && strings.TrimSpace(identifiers.ISRC) != "" {
+				isrc = strings.TrimSpace(identifiers.ISRC)
+			}
+			upc = strings.TrimSpace(identifiers.UPC)
+		}
+	}
+
 	originalFileDir := filepath.Dir(filePath)
 	originalFileBase := strings.TrimSuffix(filepath.Base(filePath), filepath.Ext(filePath))
 
@@ -406,6 +497,7 @@ func (a *AmazonDownloader) DownloadByURL(amazonURL, outputDir, quality, filename
 		Separator:   metadataSeparator,
 		Description: "https://github.com/spotbye/SpotiFLAC",
 		ISRC:        isrc,
+		UPC:         upc,
 		Genre:       mbMeta.Genre,
 	}
 

backend/config.go

@@ -60,6 +60,40 @@ func GetRedownloadWithSuffixSetting() bool {
 	return enabled
 }
 
+func GetCustomTidalAPISetting() string {
+	settings, err := LoadConfigSettings()
+	if err != nil || settings == nil {
+		return ""
+	}
+
+	customAPI, _ := settings["customTidalApi"].(string)
+	customAPI = strings.TrimRight(strings.TrimSpace(customAPI), "/")
+	if strings.HasPrefix(customAPI, "https://") {
+		return customAPI
+	}
+
+	return ""
+}
+
+func normalizeExistingFileCheckMode(value string) string {
+	switch strings.TrimSpace(strings.ToLower(value)) {
+	case "isrc", "upc":
+		return "isrc"
+	default:
+		return "filename"
+	}
+}
+
+func GetExistingFileCheckModeSetting() string {
+	settings, err := LoadConfigSettings()
+	if err != nil || settings == nil {
+		return "filename"
+	}
+
+	rawMode, _ := settings["existingFileCheckMode"].(string)
+	return normalizeExistingFileCheckMode(rawMode)
+}
+
 func GetLinkResolverSetting() string {
 	settings, err := LoadConfigSettings()
 	if err != nil || settings == nil {

backend/ffmpeg.go

@@ -19,6 +19,11 @@ import (
 	"golang.org/x/text/unicode/norm"
 )
 
+type executableCandidate struct {
+	path   string
+	source string
+}
+
 func ValidateExecutable(path string) error {
 	cleanedPath := filepath.Clean(path)
 	if cleanedPath == "" {
@@ -83,6 +88,50 @@ func GetFFmpegDir() (string, error) {
 	return EnsureAppDir()
 }
 
+func copyExecutable(src, dst string) error {
+	if err := os.MkdirAll(filepath.Dir(dst), 0o755); err != nil {
+		return err
+	}
+
+	in, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer in.Close()
+
+	out, err := os.OpenFile(dst, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0o755)
+	if err != nil {
+		return err
+	}
+	defer out.Close()
+
+	if _, err = io.Copy(out, in); err != nil {
+		return err
+	}
+
+	if err := out.Sync(); err != nil {
+		return err
+	}
+
+	return prepareExecutableForUse(dst)
+}
+
+func appendExecutableCandidate(candidates []executableCandidate, seen map[string]struct{}, path, source string) []executableCandidate {
+	cleanedPath := filepath.Clean(strings.TrimSpace(path))
+	if cleanedPath == "" {
+		return candidates
+	}
+	if _, exists := seen[cleanedPath]; exists {
+		return candidates
+	}
+
+	seen[cleanedPath] = struct{}{}
+	return append(candidates, executableCandidate{
+		path:   cleanedPath,
+		source: source,
+	})
+}
+
 func resolveSystemExecutable(executableName string) string {
 	if runtime.GOOS == "darwin" {
 		candidates := []string{
@@ -114,83 +163,163 @@ func resolveSystemExecutable(executableName string) string {
 	return ""
 }
 
-func GetFFmpegPath() (string, error) {
-	ffmpegDir, err := GetFFmpegDir()
-	if err != nil {
-		return "", err
+func runExecutableVersionCheck(path string) error {
+	cmd := exec.Command(path, "-version")
+	setHideWindow(cmd)
+	return cmd.Run()
+}
+
+func removeMacOSQuarantineAttribute(path string) error {
+	cmd := exec.Command("xattr", "-d", "com.apple.quarantine", path)
+	setHideWindow(cmd)
+	output, err := cmd.CombinedOutput()
+	if err == nil {
+		return nil
 	}
 
+	trimmedOutput := strings.TrimSpace(string(output))
+	lowerOutput := strings.ToLower(trimmedOutput)
+	if strings.Contains(lowerOutput, "no such xattr") || strings.Contains(lowerOutput, "attribute not found") {
+		return nil
+	}
+
+	if trimmedOutput != "" {
+		return fmt.Errorf("%w: %s", err, trimmedOutput)
+	}
+
+	return err
+}
+
+func prepareExecutableForUse(path string) error {
+	cleanedPath := filepath.Clean(strings.TrimSpace(path))
+	if cleanedPath == "" {
+		return fmt.Errorf("empty path")
+	}
+
+	if runtime.GOOS == "windows" {
+		return nil
+	}
+
+	if err := os.Chmod(cleanedPath, 0755); err != nil {
+		return fmt.Errorf("failed to mark executable: %w", err)
+	}
+
+	if runtime.GOOS == "darwin" {
+		if err := removeMacOSQuarantineAttribute(cleanedPath); err != nil {
+			fmt.Printf("[FFmpeg] Warning: failed to remove macOS quarantine from %s: %v\n", cleanedPath, err)
+		}
+	}
+
+	return nil
+}
+
+func resolveExecutablePath(executableName string) (string, string, error) {
+	ffmpegDir, err := GetFFmpegDir()
+	if err != nil {
+		return "", "", err
+	}
+
+	localPath := filepath.Join(ffmpegDir, executableName)
+	nextDir := filepath.Join(filepath.Dir(ffmpegDir), ".spotiflac-next")
+	nextPath := filepath.Join(nextDir, executableName)
+	localExists := false
+	candidates := make([]executableCandidate, 0, 3)
+	seen := make(map[string]struct{}, 3)
+
+	if systemPath := resolveSystemExecutable(executableName); systemPath != "" {
+		candidates = appendExecutableCandidate(candidates, seen, systemPath, "system")
+	}
+
+	if _, err := os.Stat(localPath); err == nil {
+		localExists = true
+		candidates = appendExecutableCandidate(candidates, seen, localPath, "local")
+	}
+
+	if !localExists {
+		if _, err := os.Stat(nextPath); err == nil {
+			if copyErr := copyExecutable(nextPath, localPath); copyErr == nil {
+				fmt.Printf("[FFmpeg] Copied %s from SpotiFLAC-Next folder\n", executableName)
+				candidates = appendExecutableCandidate(candidates, seen, localPath, "migrated")
+			}
+		}
+	}
+
+	var lastErr error
+	for _, candidate := range candidates {
+		if candidate.source != "system" {
+			if err := prepareExecutableForUse(candidate.path); err != nil {
+				lastErr = err
+				fmt.Printf("[FFmpeg] Skipping %s %s: %v\n", candidate.source, candidate.path, err)
+				continue
+			}
+		}
+
+		if err := ValidateExecutable(candidate.path); err != nil {
+			lastErr = err
+			fmt.Printf("[FFmpeg] Skipping %s %s: %v\n", candidate.source, candidate.path, err)
+			continue
+		}
+
+		if err := runExecutableVersionCheck(candidate.path); err != nil {
+			lastErr = err
+			fmt.Printf("[FFmpeg] Skipping %s %s: %v\n", candidate.source, candidate.path, err)
+			continue
+		}
+
+		return candidate.path, localPath, nil
+	}
+
+	if len(candidates) > 0 {
+		if lastErr != nil {
+			return "", localPath, fmt.Errorf("no working %s executable found: %w", executableName, lastErr)
+		}
+		return "", localPath, fmt.Errorf("no working %s executable found", executableName)
+	}
+
+	return "", localPath, fmt.Errorf("%s not found in app directory or system path", executableName)
+}
+
+func GetFFmpegPath() (string, error) {
 	ffmpegName := "ffmpeg"
 	if runtime.GOOS == "windows" {
 		ffmpegName = "ffmpeg.exe"
 	}
 
-	if path := resolveSystemExecutable(ffmpegName); path != "" {
-		return path, nil
-	}
-
-	localPath := filepath.Join(ffmpegDir, ffmpegName)
-	if _, err := os.Stat(localPath); err == nil {
-		return localPath, nil
-	}
-
-	return localPath, nil
-}
-
-func GetFFprobePath() (string, error) {
-	ffmpegDir, err := GetFFmpegDir()
+	path, localPath, err := resolveExecutablePath(ffmpegName)
 	if err != nil {
+		if localPath != "" {
+			return localPath, err
+		}
 		return "", err
 	}
 
+	return path, nil
+}
+
+func GetFFprobePath() (string, error) {
 	ffprobeName := "ffprobe"
 	if runtime.GOOS == "windows" {
 		ffprobeName = "ffprobe.exe"
 	}
 
-	if path := resolveSystemExecutable(ffprobeName); path != "" {
+	path, localPath, err := resolveExecutablePath(ffprobeName)
+	if err != nil {
+		if localPath != "" {
+			return localPath, err
+		}
+		return "", err
+	}
+
 	return path, nil
-	}
-
-	localPath := filepath.Join(ffmpegDir, ffprobeName)
-	if _, err := os.Stat(localPath); err == nil {
-		return localPath, nil
-	}
-
-	return localPath, fmt.Errorf("ffprobe not found in app directory or system path")
 }
 
 func IsFFprobeInstalled() (bool, error) {
-	ffprobePath, err := GetFFprobePath()
-	if err != nil {
-		return false, nil
-	}
-
-	if err := ValidateExecutable(ffprobePath); err != nil {
-		return false, nil
-	}
-
-	cmd := exec.Command(ffprobePath, "-version")
-	setHideWindow(cmd)
-	err = cmd.Run()
+	_, err := GetFFprobePath()
 	return err == nil, nil
 }
 
 func IsFFmpegInstalled() (bool, error) {
-	ffmpegPath, err := GetFFmpegPath()
-	if err != nil {
-		return false, err
-	}
-
-	if err := ValidateExecutable(ffmpegPath); err != nil {
-		return false, nil
-	}
-
-	cmd := exec.Command(ffmpegPath, "-version")
-
-	setHideWindow(cmd)
-	err = cmd.Run()
-	if err != nil {
+	if _, err := GetFFmpegPath(); err != nil {
 		return false, nil
 	}
 
@@ -507,6 +636,10 @@ func extractZip(zipPath, destDir string) error {
 			return fmt.Errorf("failed to extract file: %w", err)
 		}
 
+		if err := prepareExecutableForUse(destPath); err != nil {
+			return fmt.Errorf("failed to prepare extracted executable: %w", err)
+		}
+
 		fmt.Printf("[FFmpeg] Extracted to: %s\n", destPath)
 	}
 
@@ -584,6 +717,10 @@ func extractTarXz(tarXzPath, destDir string) error {
 			return fmt.Errorf("failed to extract file: %w", err)
 		}
 
+		if err := prepareExecutableForUse(destPath); err != nil {
+			return fmt.Errorf("failed to prepare extracted executable: %w", err)
+		}
+
 		fmt.Printf("[FFmpeg] Extracted to: %s\n", destPath)
 	}
 

backend/http_headers.go

@@ -0,0 +1,20 @@
+package backend
+
+import (
+	"io"
+	"net/http"
+)
+
+const DefaultDownloaderUserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.36"
+
+func NewRequestWithDefaultHeaders(method string, rawURL string, body io.Reader) (*http.Request, error) {
+	req, err := http.NewRequest(method, rawURL, body)
+	if err != nil {
+		return nil, err
+	}
+
+	req.Header.Set("User-Agent", DefaultDownloaderUserAgent)
+	req.Header.Set("Accept", "application/json, text/plain, */*")
+
+	return req, nil
+}

backend/musicbrainz.go

@@ -180,7 +180,7 @@ func queryMusicBrainzRecordings(client *http.Client, query string) (*MusicBrainz
 		return nil, err
 	}
 
-	req.Header.Set("User-Agent", fmt.Sprintf("SpotiFLAC/%s ( hi@afkarxyz.qzz.io )", AppVersion))
+	req.Header.Set("User-Agent", fmt.Sprintf("SpotiFLAC/%s ( support@spotbye.qzz.io )", AppVersion))
 	req.Header.Set("Accept", "application/json")
 
 	var lastErr error

backend/provider_endpoints.go

@@ -0,0 +1,21 @@
+package backend
+
+const amazonMusicAPIBaseURL = "https://amazon.spotbye.qzz.io"
+const qobuzMusicDLDownloadAPIURL = "https://www.musicdl.me/api/qobuz/download"
+
+var defaultQobuzStreamAPIBaseURLs = []string{
+	"https://dab.yeet.su/api/stream?trackId=",
+	"https://dabmusic.xyz/api/stream?trackId=",
+}
+
+func GetQobuzStreamAPIBaseURLs() []string {
+	return append([]string(nil), defaultQobuzStreamAPIBaseURLs...)
+}
+
+func GetQobuzMusicDLDownloadAPIURL() string {
+	return qobuzMusicDLDownloadAPIURL
+}
+
+func GetAmazonMusicAPIBaseURL() string {
+	return amazonMusicAPIBaseURL
+}

backend/qobuz.go

@@ -1,6 +1,10 @@
 package backend
 
 import (
+	"bytes"
+	"crypto/aes"
+	"crypto/cipher"
+	"crypto/sha256"
 	"encoding/json"
 	"fmt"
 	"io"
@@ -10,6 +14,7 @@ import (
 	"path/filepath"
 	"regexp"
 	"strings"
+	"sync"
 	"time"
 )
 
@@ -68,6 +73,57 @@ type QobuzStreamResponse struct {
 	URL string `json:"url"`
 }
 
+type qobuzMusicDLRequest struct {
+	URL     string `json:"url"`
+	Quality string `json:"quality"`
+}
+
+type qobuzMusicDLResponse struct {
+	Success     bool   `json:"success"`
+	Type        string `json:"type"`
+	URLType     string `json:"url_type"`
+	TrackID     string `json:"track_id"`
+	Quality     string `json:"quality_label"`
+	DownloadURL string `json:"download_url"`
+	Message     string `json:"message"`
+	Error       string `json:"error"`
+}
+
+const qobuzMusicDLProbeTrackID int64 = 341032040
+
+var (
+	qobuzMusicDLDebugKeyOnce sync.Once
+	qobuzMusicDLDebugKey     string
+	qobuzMusicDLDebugKeyErr  error
+)
+
+var qobuzMusicDLDebugKeySeedParts = [][]byte{
+	{0x73, 0x70, 0x6f, 0x74, 0x69, 0x66},
+	{0x6c, 0x61, 0x63, 0x3a, 0x71, 0x6f},
+	{0x62, 0x75, 0x7a, 0x3a, 0x6d, 0x75, 0x73, 0x69, 0x63, 0x64, 0x6c, 0x3a, 0x76, 0x31},
+}
+
+var qobuzMusicDLDebugKeyAAD = []byte{
+	0x71, 0x6f, 0x62, 0x75, 0x7a, 0x7c, 0x6d, 0x75, 0x73, 0x69, 0x63, 0x64,
+	0x6c, 0x7c, 0x64, 0x65, 0x62, 0x75, 0x67, 0x7c, 0x76, 0x31,
+}
+
+var qobuzMusicDLDebugKeyNonce = []byte{
+	0x91, 0x2a, 0x5c, 0x77, 0x0f, 0x33, 0xa8, 0x14, 0x62, 0x9d, 0xce, 0x41,
+}
+
+var qobuzMusicDLDebugKeyCiphertext = []byte{
+	0xf3, 0x4a, 0x83, 0x45, 0x24, 0xb6, 0x22, 0xaf, 0xd6, 0xc3, 0x6e, 0x2d,
+	0x56, 0xd1, 0xbb, 0x0b, 0xe9, 0x1b, 0x4f, 0x1c, 0x5f, 0x41, 0x55, 0xc2,
+	0xc6, 0xdf, 0xad, 0x21, 0x58, 0xfe, 0xd5, 0xb8, 0x2d, 0x29, 0xf9, 0x9e,
+	0x6f, 0xd6,
+}
+
+var qobuzMusicDLDebugKeyTag = []byte{
+	0x69, 0x0c, 0x42, 0x70, 0x14, 0x83, 0xff, 0x14, 0xc8, 0xbe, 0x17, 0x00,
+	0x69, 0xb1, 0xfe, 0xbb,
+}
+
 func NewQobuzDownloader() *QobuzDownloader {
 	return &QobuzDownloader{
 		client: &http.Client{
@@ -77,6 +133,57 @@ func NewQobuzDownloader() *QobuzDownloader {
 	}
 }
 
+func previewQobuzResponseBody(body []byte, maxLen int) string {
+	preview := strings.TrimSpace(string(body))
+	if len(preview) > maxLen {
+		return preview[:maxLen] + "..."
+	}
+	return preview
+}
+
+func buildQobuzOpenTrackURL(trackID int64) string {
+	return fmt.Sprintf("https://open.qobuz.com/track/%d", trackID)
+}
+
+func getQobuzMusicDLDebugKey() (string, error) {
+	qobuzMusicDLDebugKeyOnce.Do(func() {
+		hasher := sha256.New()
+		for _, part := range qobuzMusicDLDebugKeySeedParts {
+			hasher.Write(part)
+		}
+
+		block, err := aes.NewCipher(hasher.Sum(nil))
+		if err != nil {
+			qobuzMusicDLDebugKeyErr = err
+			return
+		}
+
+		gcm, err := cipher.NewGCM(block)
+		if err != nil {
+			qobuzMusicDLDebugKeyErr = err
+			return
+		}
+
+		sealed := make([]byte, 0, len(qobuzMusicDLDebugKeyCiphertext)+len(qobuzMusicDLDebugKeyTag))
+		sealed = append(sealed, qobuzMusicDLDebugKeyCiphertext...)
+		sealed = append(sealed, qobuzMusicDLDebugKeyTag...)
+
+		plaintext, err := gcm.Open(nil, qobuzMusicDLDebugKeyNonce, sealed, qobuzMusicDLDebugKeyAAD)
+		if err != nil {
+			qobuzMusicDLDebugKeyErr = err
+			return
+		}
+
+		qobuzMusicDLDebugKey = string(plaintext)
+	})
+
+	if qobuzMusicDLDebugKeyErr != nil {
+		return "", qobuzMusicDLDebugKeyErr
+	}
+
+	return qobuzMusicDLDebugKey, nil
+}
+
 func (q *QobuzDownloader) searchByISRC(isrc string) (*QobuzTrack, error) {
 	if strings.HasPrefix(isrc, "qobuz_") {
 		trackID := strings.TrimPrefix(isrc, "qobuz_")
@@ -139,15 +246,17 @@ func (q *QobuzDownloader) searchByISRC(isrc string) (*QobuzTrack, error) {
 }
 
 func buildQobuzAPIURL(apiBase string, trackID int64, quality string) string {
-	if strings.Contains(apiBase, "qbz.afkarxyz.qzz.io") {
-		return fmt.Sprintf("%s%d?quality=%s", apiBase, trackID, quality)
-	}
 	return fmt.Sprintf("%s%d&quality=%s", apiBase, trackID, quality)
 }
 
 func (q *QobuzDownloader) DownloadFromStandard(apiBase string, trackID int64, quality string) (string, error) {
 	apiURL := buildQobuzAPIURL(apiBase, trackID, quality)
-	resp, err := q.client.Get(apiURL)
+	req, err := NewRequestWithDefaultHeaders(http.MethodGet, apiURL, nil)
+	if err != nil {
+		return "", err
+	}
+
+	resp, err := q.client.Do(req)
 	if err != nil {
 		return "", err
 	}
@@ -183,6 +292,81 @@ func (q *QobuzDownloader) DownloadFromStandard(apiBase string, trackID int64, qu
 	return "", fmt.Errorf("invalid response")
 }
 
+func (q *QobuzDownloader) DownloadFromMusicDL(trackID int64, quality string) (string, error) {
+	if strings.TrimSpace(quality) == "" {
+		quality = "6"
+	}
+
+	debugKey, err := getQobuzMusicDLDebugKey()
+	if err != nil {
+		return "", fmt.Errorf("failed to decrypt MusicDL debug key: %w", err)
+	}
+
+	payload, err := json.Marshal(qobuzMusicDLRequest{
+		URL:     buildQobuzOpenTrackURL(trackID),
+		Quality: strings.TrimSpace(quality),
+	})
+	if err != nil {
+		return "", fmt.Errorf("failed to encode MusicDL request: %w", err)
+	}
+
+	req, err := NewRequestWithDefaultHeaders(http.MethodPost, GetQobuzMusicDLDownloadAPIURL(), bytes.NewReader(payload))
+	if err != nil {
+		return "", fmt.Errorf("failed to create MusicDL request: %w", err)
+	}
+
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("X-Debug-Key", debugKey)
+
+	resp, err := q.client.Do(req)
+	if err != nil {
+		return "", fmt.Errorf("failed to reach MusicDL: %w", err)
+	}
+	defer resp.Body.Close()
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return "", fmt.Errorf("failed to read MusicDL response: %w", err)
+	}
+
+	if resp.StatusCode != http.StatusOK {
+		return "", fmt.Errorf("MusicDL returned status %d: %s", resp.StatusCode, previewQobuzResponseBody(body, 256))
+	}
+
+	var downloadResp qobuzMusicDLResponse
+	if err := json.Unmarshal(body, &downloadResp); err != nil {
+		return "", fmt.Errorf("failed to decode MusicDL response: %w (%s)", err, previewQobuzResponseBody(body, 256))
+	}
+
+	if !downloadResp.Success {
+		message := strings.TrimSpace(downloadResp.Error)
+		if message == "" {
+			message = strings.TrimSpace(downloadResp.Message)
+		}
+		if message == "" {
+			message = "MusicDL reported failure"
+		}
+		return "", fmt.Errorf("%s", message)
+	}
+
+	downloadURL := strings.TrimSpace(downloadResp.DownloadURL)
+	if downloadURL == "" {
+		return "", fmt.Errorf("MusicDL response did not include a download_url")
+	}
+
+	return downloadURL, nil
+}
+
+func CheckQobuzMusicDLStatus(client *http.Client) bool {
+	if client == nil {
+		client = &http.Client{Timeout: 4 * time.Second}
+	}
+
+	downloader := &QobuzDownloader{client: client, appID: qobuzDefaultAPIAppID}
+	_, err := downloader.DownloadFromMusicDL(qobuzMusicDLProbeTrackID, "27")
+	return err == nil
+}
+
 func (q *QobuzDownloader) GetDownloadURL(trackID int64, quality string, allowFallback bool) (string, error) {
 	qualityCode := quality
 	if qualityCode == "" || qualityCode == "5" {
@@ -191,12 +375,6 @@ func (q *QobuzDownloader) GetDownloadURL(trackID int64, quality string, allowFal
 
 	fmt.Printf("Getting download URL for track ID: %d with requested quality: %s\n", trackID, qualityCode)
 
-	standardAPIs := prioritizeProviders("qobuz", []string{
-		"https://dab.yeet.su/api/stream?trackId=",
-		"https://dabmusic.xyz/api/stream?trackId=",
-		"https://qbz.afkarxyz.qzz.io/api/track/",
-	})
-
 	downloadFunc := func(qual string) (string, error) {
 		type Provider struct {
 			Name string
@@ -204,21 +382,48 @@ func (q *QobuzDownloader) GetDownloadURL(trackID int64, quality string, allowFal
 			Func func() (string, error)
 		}
 
-		var providers []Provider
+		providerMap := make(map[string]Provider)
+		providerIDs := []string{GetQobuzMusicDLDownloadAPIURL()}
 
-		for _, api := range standardAPIs {
+		providerMap[GetQobuzMusicDLDownloadAPIURL()] = Provider{
+			Name: "MusicDL",
+			API:  GetQobuzMusicDLDownloadAPIURL(),
+			Func: func() (string, error) {
+				return q.DownloadFromMusicDL(trackID, qual)
+			},
+		}
+
+		for _, api := range GetQobuzStreamAPIBaseURLs() {
 			currentAPI := api
-			providers = append(providers, Provider{
+			providerIDs = append(providerIDs, currentAPI)
+			providerMap[currentAPI] = Provider{
 				Name: "Standard(" + currentAPI + ")",
 				API:  currentAPI,
 				Func: func() (string, error) {
 					return q.DownloadFromStandard(currentAPI, trackID, qual)
 				},
-			})
+			}
 		}
 
+		orderedProviderIDs := prioritizeProviders("qobuz", providerIDs)
+		primaryProviderID := GetQobuzMusicDLDownloadAPIURL()
+		if len(orderedProviderIDs) > 1 && orderedProviderIDs[0] != primaryProviderID {
+			reordered := []string{primaryProviderID}
+			for _, providerID := range orderedProviderIDs {
+				if providerID == primaryProviderID {
+					continue
+				}
+				reordered = append(reordered, providerID)
+			}
+			orderedProviderIDs = reordered
+		}
 		var lastErr error
-		for _, p := range providers {
+		for _, providerID := range orderedProviderIDs {
+			p, ok := providerMap[providerID]
+			if !ok {
+				continue
+			}
+
 			fmt.Printf("Trying Provider: %s (Quality: %s)...\n", p.Name, qual)
 
 			url, err := p.Func()
@@ -272,7 +477,12 @@ func (q *QobuzDownloader) DownloadFile(url, filepath string) error {
 		Timeout: 5 * time.Minute,
 	}
 
-	resp, err := downloadClient.Get(url)
+	req, err := NewRequestWithDefaultHeaders(http.MethodGet, url, nil)
+	if err != nil {
+		return fmt.Errorf("failed to create download request: %w", err)
+	}
+
+	resp, err := downloadClient.Do(req)
 	if err != nil {
 		return fmt.Errorf("failed to download file: %w", err)
 	}
@@ -306,7 +516,12 @@ func (q *QobuzDownloader) DownloadCoverArt(coverURL, filepath string) error {
 		return fmt.Errorf("no cover URL provided")
 	}
 
-	resp, err := q.client.Get(coverURL)
+	req, err := NewRequestWithDefaultHeaders(http.MethodGet, coverURL, nil)
+	if err != nil {
+		return fmt.Errorf("failed to create cover request: %w", err)
+	}
+
+	resp, err := q.client.Do(req)
 	if err != nil {
 		return fmt.Errorf("failed to download cover: %w", err)
 	}

backend/qobuz_api.go

@@ -21,7 +21,7 @@ const (
 	qobuzAPIBaseURL                = "https://www.qobuz.com/api.json/0.2"
 	qobuzDefaultAPIAppID           = "712109809"
 	qobuzDefaultAPIAppSecret       = "589be88e4538daea11f509d29e4a23b1"
-	qobuzDefaultUA                 = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.36"
+	qobuzDefaultUA                 = DefaultDownloaderUserAgent
 	qobuzCredentialsCacheFile      = "qobuz-api-credentials.json"
 	qobuzCredentialsCacheTTL       = 24 * time.Hour
 	qobuzCredentialsProbeTrackISRC = "USUM71703861"

backend/tidal.go

@@ -48,18 +48,172 @@ type TidalBTSManifest struct {
 	URLs           []string `json:"urls"`
 }
 
-func NewTidalDownloader(apiURL string) *TidalDownloader {
-	if apiURL == "" {
-		downloader := &TidalDownloader{
-			client: &http.Client{
-				Timeout: 5 * time.Second,
-			},
-			timeout:    5 * time.Second,
-			maxRetries: 3,
-			apiURL:     "",
+func getConfiguredTidalAPIAttemptList() ([]string, error) {
+	customAPI := GetCustomTidalAPISetting()
+	apis, err := GetRotatedTidalAPIList()
+	if customAPI == "" {
+		return apis, err
 	}
 
-		apis, err := downloader.GetAvailableAPIs()
+	if err != nil && len(apis) == 0 {
+		return []string{customAPI}, nil
+	}
+
+	result := make([]string, 0, len(apis)+1)
+	result = append(result, customAPI)
+	for _, apiURL := range apis {
+		apiURL = strings.TrimRight(strings.TrimSpace(apiURL), "/")
+		if apiURL == "" || apiURL == customAPI {
+			continue
+		}
+		result = append(result, apiURL)
+	}
+
+	return result, err
+}
+
+func buildTidalOutputPath(outputDir, filenameFormat string, includeTrackNumber bool, position int, spotifyTrackName, spotifyArtistName, spotifyAlbumName, spotifyAlbumArtist, spotifyReleaseDate string, useAlbumTrackNumber bool, spotifyTrackNumber, spotifyDiscNumber int, isrcOverride string, useFirstArtistOnly bool) (string, bool, error) {
+	if outputDir != "." {
+		if err := os.MkdirAll(outputDir, 0755); err != nil {
+			return "", false, fmt.Errorf("directory error: %w", err)
+		}
+	}
+
+	artistNameForFile := sanitizeFilename(spotifyArtistName)
+	albumArtistForFile := sanitizeFilename(spotifyAlbumArtist)
+	if useFirstArtistOnly {
+		artistNameForFile = sanitizeFilename(GetFirstArtist(spotifyArtistName))
+		albumArtistForFile = sanitizeFilename(GetFirstArtist(spotifyAlbumArtist))
+	}
+
+	trackTitleForFile := sanitizeFilename(spotifyTrackName)
+	albumTitleForFile := sanitizeFilename(spotifyAlbumName)
+
+	filename := buildTidalFilename(trackTitleForFile, artistNameForFile, albumTitleForFile, albumArtistForFile, spotifyReleaseDate, spotifyTrackNumber, spotifyDiscNumber, filenameFormat, includeTrackNumber, position, useAlbumTrackNumber, isrcOverride)
+	outputFilename := filepath.Join(outputDir, filename)
+
+	outputFilename, alreadyExists := ResolveOutputPathForDownload(outputFilename, GetRedownloadWithSuffixSetting())
+	return outputFilename, alreadyExists, nil
+}
+
+func finalizeTidalDownload(outputFilename, spotifyTrackName, spotifyArtistName, spotifyAlbumName, spotifyAlbumArtist, spotifyReleaseDate string, spotifyCoverURL string, embedMaxQualityCover bool, spotifyTrackNumber, spotifyDiscNumber, spotifyTotalTracks, spotifyTotalDiscs int, spotifyCopyright, spotifyPublisher, spotifyComposer, metadataSeparator, isrcOverride, spotifyURL string, useSingleGenre bool, embedGenre bool) {
+	trackTitle := spotifyTrackName
+	artistName := spotifyArtistName
+	albumTitle := spotifyAlbumName
+
+	type mbResult struct {
+		ISRC     string
+		Metadata Metadata
+	}
+
+	metaChan := make(chan mbResult, 1)
+	if embedGenre && spotifyURL != "" {
+		go func() {
+			res := mbResult{}
+			var isrc string
+			parts := strings.Split(spotifyURL, "/")
+			if len(parts) > 0 {
+				sID := strings.Split(parts[len(parts)-1], "?")[0]
+				if sID != "" {
+					client := NewSongLinkClient()
+					if val, err := client.GetISRC(sID); err == nil {
+						isrc = val
+					}
+				}
+			}
+			res.ISRC = isrc
+			if isrc != "" {
+				if ShouldSkipMusicBrainzMetadataFetch() {
+					fmt.Println("Skipping MusicBrainz metadata fetch because status check is offline.")
+				} else {
+					fmt.Println("Fetching MusicBrainz metadata...")
+					if fetchedMeta, err := FetchMusicBrainzMetadata(isrc, trackTitle, artistName, albumTitle, useSingleGenre, embedGenre); err == nil {
+						res.Metadata = fetchedMeta
+						fmt.Println("✓ MusicBrainz metadata fetched")
+					} else {
+						fmt.Printf("Warning: Failed to fetch MusicBrainz metadata: %v\n", err)
+					}
+				}
+			}
+			metaChan <- res
+		}()
+	} else {
+		close(metaChan)
+	}
+
+	isrc := strings.TrimSpace(isrcOverride)
+	var mbMeta Metadata
+	if spotifyURL != "" {
+		result := <-metaChan
+		if isrc == "" {
+			isrc = result.ISRC
+		}
+		mbMeta = result.Metadata
+	}
+
+	upc := ""
+	if spotifyURL != "" {
+		if identifiers, err := GetSpotifyTrackIdentifiersDirect(spotifyURL); err == nil || identifiers.ISRC != "" || identifiers.UPC != "" {
+			if strings.TrimSpace(isrc) == "" && strings.TrimSpace(identifiers.ISRC) != "" {
+				isrc = strings.TrimSpace(identifiers.ISRC)
+			}
+			upc = strings.TrimSpace(identifiers.UPC)
+		}
+	}
+
+	fmt.Println("Adding metadata...")
+
+	coverPath := ""
+	if spotifyCoverURL != "" {
+		coverPath = outputFilename + ".cover.jpg"
+		coverClient := NewCoverClient()
+		if err := coverClient.DownloadCoverToPath(spotifyCoverURL, coverPath, embedMaxQualityCover); err != nil {
+			fmt.Printf("Warning: Failed to download Spotify cover: %v\n", err)
+			coverPath = ""
+		} else {
+			defer os.Remove(coverPath)
+			fmt.Println("Spotify cover downloaded")
+		}
+	}
+
+	trackNumberToEmbed := spotifyTrackNumber
+	if trackNumberToEmbed == 0 {
+		trackNumberToEmbed = 1
+	}
+
+	metadata := Metadata{
+		Title:       trackTitle,
+		Artist:      artistName,
+		Album:       albumTitle,
+		AlbumArtist: spotifyAlbumArtist,
+		Date:        spotifyReleaseDate,
+		TrackNumber: trackNumberToEmbed,
+		TotalTracks: spotifyTotalTracks,
+		DiscNumber:  spotifyDiscNumber,
+		TotalDiscs:  spotifyTotalDiscs,
+		URL:         spotifyURL,
+		Comment:     spotifyURL,
+		Copyright:   spotifyCopyright,
+		Publisher:   spotifyPublisher,
+		Composer:    spotifyComposer,
+		Separator:   metadataSeparator,
+		Description: "https://github.com/spotbye/SpotiFLAC",
+		ISRC:        isrc,
+		UPC:         upc,
+		Genre:       mbMeta.Genre,
+	}
+
+	if err := EmbedMetadata(outputFilename, metadata, coverPath); err != nil {
+		fmt.Printf("Tagging failed: %v\n", err)
+	} else {
+		fmt.Println("Metadata saved")
+	}
+}
+
+func NewTidalDownloader(apiURL string) *TidalDownloader {
+	apiURL = strings.TrimRight(strings.TrimSpace(apiURL), "/")
+	if apiURL == "" {
+		apis, err := getConfiguredTidalAPIAttemptList()
 		if err == nil && len(apis) > 0 {
 			apiURL = apis[0]
 		}
@@ -76,16 +230,12 @@ func NewTidalDownloader(apiURL string) *TidalDownloader {
 }
 
 func (t *TidalDownloader) GetAvailableAPIs() ([]string, error) {
-	apis := []string{
-		"https://hifi-one.spotisaver.net",
-		"https://hifi-two.spotisaver.net",
-		"https://eu-central.monochrome.tf",
-		"https://us-west.monochrome.tf",
-		"https://api.monochrome.tf",
-		"https://monochrome-api.samidy.com",
-		"https://tidal.kinoplus.online",
+	apis, err := getConfiguredTidalAPIAttemptList()
+	if err == nil && len(apis) > 0 {
+		return apis, nil
 	}
-	return prioritizeProviders("tidal", apis), nil
+
+	return nil, err
 }
 
 func (t *TidalDownloader) GetTidalURLFromSpotify(spotifyTrackID string) (string, error) {
@@ -129,14 +279,12 @@ func (t *TidalDownloader) GetDownloadURL(trackID int64, quality string) (string,
 	url := fmt.Sprintf("%s/track/?id=%d&quality=%s", t.apiURL, trackID, quality)
 	fmt.Printf("Tidal API URL: %s\n", url)
 
-	req, err := http.NewRequest("GET", url, nil)
+	req, err := NewRequestWithDefaultHeaders(http.MethodGet, url, nil)
 	if err != nil {
 		fmt.Printf("✗ failed to create request: %v\n", err)
 		return "", fmt.Errorf("failed to create request: %w", err)
 	}
 
-	req.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36")
-
 	resp, err := t.client.Do(req)
 	if err != nil {
 		fmt.Printf("✗ Tidal API request failed: %v\n", err)
@@ -188,19 +336,17 @@ func (t *TidalDownloader) GetDownloadURL(trackID int64, quality string) (string,
 	return "", fmt.Errorf("download URL not found in response")
 }
 
-func (t *TidalDownloader) DownloadFile(url, filepath string) error {
+func (t *TidalDownloader) DownloadFile(url, filepath string, quality string) error {
 
 	if strings.HasPrefix(url, "MANIFEST:") {
-		return t.DownloadFromManifest(strings.TrimPrefix(url, "MANIFEST:"), filepath)
+		return t.DownloadFromManifest(strings.TrimPrefix(url, "MANIFEST:"), filepath, quality)
 	}
 
-	req, err := http.NewRequest("GET", url, nil)
+	req, err := NewRequestWithDefaultHeaders(http.MethodGet, url, nil)
 	if err != nil {
 		return fmt.Errorf("failed to create request: %w", err)
 	}
 
-	req.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36")
-
 	resp, err := t.client.Do(req)
 
 	if err != nil {
@@ -230,22 +376,27 @@ func (t *TidalDownloader) DownloadFile(url, filepath string) error {
 	return nil
 }
 
-func (t *TidalDownloader) DownloadFromManifest(manifestB64, outputPath string) error {
+func (t *TidalDownloader) DownloadFromManifest(manifestB64, outputPath string, quality string) error {
 	directURL, initURL, mediaURLs, mimeType, err := parseManifest(manifestB64)
 	if err != nil {
 		return fmt.Errorf("failed to parse manifest: %w", err)
 	}
 
+	isLosslessRequested := quality == "LOSSLESS" || quality == "HI_RES" || quality == "HI_RES_LOSSLESS"
+	isActualLossless := strings.Contains(strings.ToLower(mimeType), "flac") || mimeType == ""
+	if isLosslessRequested && !isActualLossless {
+		return fmt.Errorf("requested %s quality but Tidal provided lossy format (%s). Aborting download", quality, mimeType)
+	}
+
 	client := &http.Client{
 		Timeout: 120 * time.Second,
 	}
 
 	doRequest := func(url string) (*http.Response, error) {
-		req, err := http.NewRequest("GET", url, nil)
+		req, err := NewRequestWithDefaultHeaders(http.MethodGet, url, nil)
 		if err != nil {
 			return nil, err
 		}
-		req.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36")
 		return client.Do(req)
 	}
 
@@ -417,12 +568,6 @@ func (t *TidalDownloader) DownloadFromManifest(manifestB64, outputPath string) e
 }
 
 func (t *TidalDownloader) DownloadByURL(tidalURL, outputDir, quality, filenameFormat string, includeTrackNumber bool, position int, spotifyTrackName, spotifyArtistName, spotifyAlbumName, spotifyAlbumArtist, spotifyReleaseDate string, useAlbumTrackNumber bool, spotifyCoverURL string, embedMaxQualityCover bool, spotifyTrackNumber, spotifyDiscNumber, spotifyTotalTracks int, spotifyTotalDiscs int, spotifyCopyright, spotifyPublisher, spotifyComposer, metadataSeparator, isrcOverride, spotifyURL string, allowFallback bool, useFirstArtistOnly bool, useSingleGenre bool, embedGenre bool) (string, error) {
-	if outputDir != "." {
-		if err := os.MkdirAll(outputDir, 0755); err != nil {
-			return "", fmt.Errorf("directory error: %w", err)
-		}
-	}
-
 	fmt.Printf("Using Tidal URL: %s\n", tidalURL)
 
 	trackID, err := t.GetTrackIDFromURL(tidalURL)
@@ -434,25 +579,10 @@ func (t *TidalDownloader) DownloadByURL(tidalURL, outputDir, quality, filenameFo
 		return "", fmt.Errorf("no track ID found")
 	}
 
-	artistName := spotifyArtistName
-	trackTitle := spotifyTrackName
-	albumTitle := spotifyAlbumName
-
-	artistNameForFile := sanitizeFilename(artistName)
-	albumArtistForFile := sanitizeFilename(spotifyAlbumArtist)
-
-	if useFirstArtistOnly {
-		artistNameForFile = sanitizeFilename(GetFirstArtist(artistName))
-		albumArtistForFile = sanitizeFilename(GetFirstArtist(spotifyAlbumArtist))
+	outputFilename, alreadyExists, err := buildTidalOutputPath(outputDir, filenameFormat, includeTrackNumber, position, spotifyTrackName, spotifyArtistName, spotifyAlbumName, spotifyAlbumArtist, spotifyReleaseDate, useAlbumTrackNumber, spotifyTrackNumber, spotifyDiscNumber, isrcOverride, useFirstArtistOnly)
+	if err != nil {
+		return "", err
 	}
-
-	trackTitleForFile := sanitizeFilename(trackTitle)
-	albumTitleForFile := sanitizeFilename(albumTitle)
-
-	filename := buildTidalFilename(trackTitleForFile, artistNameForFile, albumTitleForFile, albumArtistForFile, spotifyReleaseDate, spotifyTrackNumber, spotifyDiscNumber, filenameFormat, includeTrackNumber, position, useAlbumTrackNumber, isrcOverride)
-	outputFilename := filepath.Join(outputDir, filename)
-
-	outputFilename, alreadyExists := ResolveOutputPathForDownload(outputFilename, GetRedownloadWithSuffixSetting())
 	if alreadyExists {
 		fmt.Printf("File already exists: %s (%.2f MB)\n", outputFilename, float64(mustFileSize(outputFilename))/(1024*1024))
 		return "EXISTS:" + outputFilename, nil
@@ -460,119 +590,29 @@ func (t *TidalDownloader) DownloadByURL(tidalURL, outputDir, quality, filenameFo
 
 	downloadURL, err := t.GetDownloadURL(trackID, quality)
 	if err != nil {
-		if quality == "HI_RES" && allowFallback {
+		if isTidalHiResQuality(quality) && allowFallback {
 			fmt.Println("⚠ HI_RES unavailable/failed, falling back to LOSSLESS...")
 			downloadURL, err = t.GetDownloadURL(trackID, "LOSSLESS")
 			if err != nil {
-				return "", fmt.Errorf("failed to get download URL (HI_RES & LOSSLESS both failed): %w", err)
+				return outputFilename, fmt.Errorf("failed to get download URL (HI_RES & LOSSLESS both failed): %w", err)
 			}
 		} else {
-			return "", err
+			return outputFilename, err
 		}
 	}
 
-	type mbResult struct {
-		ISRC     string
-		Metadata Metadata
-	}
-
-	metaChan := make(chan mbResult, 1)
-	if embedGenre && spotifyURL != "" {
-		go func() {
-			res := mbResult{}
-			var isrc string
-			parts := strings.Split(spotifyURL, "/")
-			if len(parts) > 0 {
-				sID := strings.Split(parts[len(parts)-1], "?")[0]
-				if sID != "" {
-					client := NewSongLinkClient()
-					if val, err := client.GetISRC(sID); err == nil {
-						isrc = val
-					}
-				}
-			}
-			res.ISRC = isrc
-			if isrc != "" {
-				if ShouldSkipMusicBrainzMetadataFetch() {
-					fmt.Println("Skipping MusicBrainz metadata fetch because status check is offline.")
-				} else {
-					fmt.Println("Fetching MusicBrainz metadata...")
-					if fetchedMeta, err := FetchMusicBrainzMetadata(isrc, trackTitle, artistName, albumTitle, useSingleGenre, embedGenre); err == nil {
-						res.Metadata = fetchedMeta
-						fmt.Println("✓ MusicBrainz metadata fetched")
-					} else {
-						fmt.Printf("Warning: Failed to fetch MusicBrainz metadata: %v\n", err)
-					}
-				}
-			}
-			metaChan <- res
-		}()
-	} else {
-		close(metaChan)
-	}
-
 	fmt.Printf("Downloading to: %s\n", outputFilename)
-	if err := t.DownloadFile(downloadURL, outputFilename); err != nil {
-		return "", err
+	if err := t.DownloadFile(downloadURL, outputFilename, quality); err != nil {
+		cleanupTidalDownloadArtifacts(outputFilename)
+		return outputFilename, err
 	}
-
-	isrc := strings.TrimSpace(isrcOverride)
-	var mbMeta Metadata
-	if spotifyURL != "" {
-		result := <-metaChan
-		if isrc == "" {
-			isrc = result.ISRC
-		}
-		mbMeta = result.Metadata
-	}
-
-	fmt.Println("Adding metadata...")
-
-	coverPath := ""
-
-	if spotifyCoverURL != "" {
-		coverPath = outputFilename + ".cover.jpg"
-		coverClient := NewCoverClient()
-		if err := coverClient.DownloadCoverToPath(spotifyCoverURL, coverPath, embedMaxQualityCover); err != nil {
-			fmt.Printf("Warning: Failed to download Spotify cover: %v\n", err)
-			coverPath = ""
-		} else {
-			defer os.Remove(coverPath)
-			fmt.Println("Spotify cover downloaded")
+	if t.apiURL != "" {
+		if err := RememberTidalAPIUsage(t.apiURL); err != nil {
+			fmt.Printf("Warning: failed to persist last used Tidal API: %v\n", err)
 		}
 	}
 
-	trackNumberToEmbed := spotifyTrackNumber
-	if trackNumberToEmbed == 0 {
-		trackNumberToEmbed = 1
-	}
-
-	metadata := Metadata{
-		Title:       trackTitle,
-		Artist:      artistName,
-		Album:       albumTitle,
-		AlbumArtist: spotifyAlbumArtist,
-		Date:        spotifyReleaseDate,
-		TrackNumber: trackNumberToEmbed,
-		TotalTracks: spotifyTotalTracks,
-		DiscNumber:  spotifyDiscNumber,
-		TotalDiscs:  spotifyTotalDiscs,
-		URL:         spotifyURL,
-		Comment:     spotifyURL,
-		Copyright:   spotifyCopyright,
-		Publisher:   spotifyPublisher,
-		Composer:    spotifyComposer,
-		Separator:   metadataSeparator,
-		Description: "https://github.com/spotbye/SpotiFLAC",
-		ISRC:        isrc,
-		Genre:       mbMeta.Genre,
-	}
-
-	if err := EmbedMetadata(outputFilename, metadata, coverPath); err != nil {
-		fmt.Printf("Tagging failed: %v\n", err)
-	} else {
-		fmt.Println("Metadata saved")
-	}
+	finalizeTidalDownload(outputFilename, spotifyTrackName, spotifyArtistName, spotifyAlbumName, spotifyAlbumArtist, spotifyReleaseDate, spotifyCoverURL, embedMaxQualityCover, spotifyTrackNumber, spotifyDiscNumber, spotifyTotalTracks, spotifyTotalDiscs, spotifyCopyright, spotifyPublisher, spotifyComposer, metadataSeparator, isrcOverride, spotifyURL, useSingleGenre, embedGenre)
 
 	fmt.Println("Done")
 	fmt.Println("✓ Downloaded successfully from Tidal")
@@ -580,17 +620,6 @@ func (t *TidalDownloader) DownloadByURL(tidalURL, outputDir, quality, filenameFo
 }
 
 func (t *TidalDownloader) DownloadByURLWithFallback(tidalURL, outputDir, quality, filenameFormat string, includeTrackNumber bool, position int, spotifyTrackName, spotifyArtistName, spotifyAlbumName, spotifyAlbumArtist, spotifyReleaseDate string, useAlbumTrackNumber bool, spotifyCoverURL string, embedMaxQualityCover bool, spotifyTrackNumber, spotifyDiscNumber, spotifyTotalTracks int, spotifyTotalDiscs int, spotifyCopyright, spotifyPublisher, spotifyComposer, metadataSeparator, isrcOverride, spotifyURL string, allowFallback bool, useFirstArtistOnly bool, useSingleGenre bool, embedGenre bool) (string, error) {
-	apis, err := t.GetAvailableAPIs()
-	if err != nil {
-		return "", fmt.Errorf("no APIs available for fallback: %w", err)
-	}
-
-	if outputDir != "." {
-		if err := os.MkdirAll(outputDir, 0755); err != nil {
-			return "", fmt.Errorf("directory error: %w", err)
-		}
-	}
-
 	fmt.Printf("Using Tidal URL: %s\n", tidalURL)
 
 	trackID, err := t.GetTrackIDFromURL(tidalURL)
@@ -602,146 +631,24 @@ func (t *TidalDownloader) DownloadByURLWithFallback(tidalURL, outputDir, quality
 		return "", fmt.Errorf("no track ID found")
 	}
 
-	artistName := spotifyArtistName
-	trackTitle := spotifyTrackName
-	albumTitle := spotifyAlbumName
-
-	artistNameForFile := sanitizeFilename(artistName)
-	albumArtistForFile := sanitizeFilename(spotifyAlbumArtist)
-
-	if useFirstArtistOnly {
-		artistNameForFile = sanitizeFilename(GetFirstArtist(artistName))
-		albumArtistForFile = sanitizeFilename(GetFirstArtist(spotifyAlbumArtist))
+	outputFilename, alreadyExists, err := buildTidalOutputPath(outputDir, filenameFormat, includeTrackNumber, position, spotifyTrackName, spotifyArtistName, spotifyAlbumName, spotifyAlbumArtist, spotifyReleaseDate, useAlbumTrackNumber, spotifyTrackNumber, spotifyDiscNumber, isrcOverride, useFirstArtistOnly)
+	if err != nil {
+		return "", err
 	}
-
-	trackTitleForFile := sanitizeFilename(trackTitle)
-	albumTitleForFile := sanitizeFilename(albumTitle)
-
-	filename := buildTidalFilename(trackTitleForFile, artistNameForFile, albumTitleForFile, albumArtistForFile, spotifyReleaseDate, spotifyTrackNumber, spotifyDiscNumber, filenameFormat, includeTrackNumber, position, useAlbumTrackNumber, isrcOverride)
-	outputFilename := filepath.Join(outputDir, filename)
-
-	outputFilename, alreadyExists := ResolveOutputPathForDownload(outputFilename, GetRedownloadWithSuffixSetting())
 	if alreadyExists {
 		fmt.Printf("File already exists: %s (%.2f MB)\n", outputFilename, float64(mustFileSize(outputFilename))/(1024*1024))
 		return "EXISTS:" + outputFilename, nil
 	}
 
-	successAPI, downloadURL, err := getDownloadURLRotated(apis, trackID, quality)
-	if err != nil {
-		if quality == "HI_RES" && allowFallback {
-			fmt.Println("⚠ HI_RES unavailable/failed on all APIs, falling back to LOSSLESS...")
-			successAPI, downloadURL, err = getDownloadURLRotated(apis, trackID, "LOSSLESS")
-			if err != nil {
-				return "", fmt.Errorf("failed to get download URL (HI_RES & LOSSLESS both failed): %w", err)
-			}
-		} else {
-			return "", err
-		}
-	}
-
-	type mbResultFallback struct {
-		ISRC     string
-		Metadata Metadata
-	}
-
-	metaChan := make(chan mbResultFallback, 1)
-	if embedGenre && spotifyURL != "" {
-		go func() {
-			res := mbResultFallback{}
-			var isrc string
-			parts := strings.Split(spotifyURL, "/")
-			if len(parts) > 0 {
-				sID := strings.Split(parts[len(parts)-1], "?")[0]
-				if sID != "" {
-					client := NewSongLinkClient()
-					if val, err := client.GetISRC(sID); err == nil {
-						isrc = val
-					}
-				}
-			}
-			res.ISRC = isrc
-			if isrc != "" {
-				if ShouldSkipMusicBrainzMetadataFetch() {
-					fmt.Println("Skipping MusicBrainz metadata fetch because status check is offline.")
-				} else {
-					fmt.Println("Fetching MusicBrainz metadata...")
-					if fetchedMeta, err := FetchMusicBrainzMetadata(isrc, trackTitle, artistName, albumTitle, useSingleGenre, embedGenre); err == nil {
-						res.Metadata = fetchedMeta
-						fmt.Println("✓ MusicBrainz metadata fetched")
-					} else {
-						fmt.Printf("Warning: Failed to fetch MusicBrainz metadata: %v\n", err)
-					}
-				}
-			}
-			metaChan <- res
-		}()
-	} else {
-		close(metaChan)
-	}
-
 	fmt.Printf("Downloading to: %s\n", outputFilename)
-	downloader := NewTidalDownloader(successAPI)
-	if err := downloader.DownloadFile(downloadURL, outputFilename); err != nil {
-		return "", err
+	successAPI, err := t.downloadWithRotatingAPIs(trackID, outputFilename, quality, allowFallback)
+	if err != nil {
+		cleanupTidalDownloadArtifacts(outputFilename)
+		return outputFilename, err
 	}
+	fmt.Printf("✓ Downloaded using API: %s\n", successAPI)
 
-	isrc := strings.TrimSpace(isrcOverride)
-	var mbMeta Metadata
-	if spotifyURL != "" {
-		result := <-metaChan
-		if isrc == "" {
-			isrc = result.ISRC
-		}
-		mbMeta = result.Metadata
-	}
-
-	fmt.Println("Adding metadata...")
-
-	coverPath := ""
-
-	if spotifyCoverURL != "" {
-		coverPath = outputFilename + ".cover.jpg"
-		coverClient := NewCoverClient()
-		if err := coverClient.DownloadCoverToPath(spotifyCoverURL, coverPath, embedMaxQualityCover); err != nil {
-			fmt.Printf("Warning: Failed to download Spotify cover: %v\n", err)
-			coverPath = ""
-		} else {
-			defer os.Remove(coverPath)
-			fmt.Println("Spotify cover downloaded")
-		}
-	}
-
-	trackNumberToEmbed := spotifyTrackNumber
-	if trackNumberToEmbed == 0 {
-		trackNumberToEmbed = 1
-	}
-
-	metadata := Metadata{
-		Title:       trackTitle,
-		Artist:      artistName,
-		Album:       albumTitle,
-		AlbumArtist: spotifyAlbumArtist,
-		Date:        spotifyReleaseDate,
-		TrackNumber: trackNumberToEmbed,
-		TotalTracks: spotifyTotalTracks,
-		DiscNumber:  spotifyDiscNumber,
-		TotalDiscs:  spotifyTotalDiscs,
-		URL:         spotifyURL,
-		Comment:     spotifyURL,
-		Copyright:   spotifyCopyright,
-		Publisher:   spotifyPublisher,
-		Composer:    spotifyComposer,
-		Separator:   metadataSeparator,
-		Description: "https://github.com/spotbye/SpotiFLAC",
-		ISRC:        isrc,
-		Genre:       mbMeta.Genre,
-	}
-
-	if err := EmbedMetadata(outputFilename, metadata, coverPath); err != nil {
-		fmt.Printf("Tagging failed: %v\n", err)
-	} else {
-		fmt.Println("Metadata saved")
-	}
+	finalizeTidalDownload(outputFilename, spotifyTrackName, spotifyArtistName, spotifyAlbumName, spotifyAlbumArtist, spotifyReleaseDate, spotifyCoverURL, embedMaxQualityCover, spotifyTrackNumber, spotifyDiscNumber, spotifyTotalTracks, spotifyTotalDiscs, spotifyCopyright, spotifyPublisher, spotifyComposer, metadataSeparator, isrcOverride, spotifyURL, useSingleGenre, embedGenre)
 
 	fmt.Println("Done")
 	fmt.Println("✓ Downloaded successfully from Tidal")
@@ -752,7 +659,11 @@ func (t *TidalDownloader) Download(spotifyTrackID, outputDir, quality, filenameF
 
 	tidalURL, err := t.GetTidalURLFromSpotify(spotifyTrackID)
 	if err != nil {
-		return "", fmt.Errorf("songlink couldn't find Tidal URL: %w", err)
+		return "", fmt.Errorf("songlink/songstats couldn't find Tidal URL: %w", err)
+	}
+
+	if t.apiURL != "" {
+		return t.DownloadByURL(tidalURL, outputDir, quality, filenameFormat, includeTrackNumber, position, spotifyTrackName, spotifyArtistName, spotifyAlbumName, spotifyAlbumArtist, spotifyReleaseDate, useAlbumTrackNumber, spotifyCoverURL, embedMaxQualityCover, spotifyTrackNumber, spotifyDiscNumber, spotifyTotalTracks, spotifyTotalDiscs, spotifyCopyright, spotifyPublisher, spotifyComposer, metadataSeparator, isrcOverride, spotifyURL, allowFallback, useFirstArtistOnly, useSingleGenre, embedGenre)
 	}
 
 	return t.DownloadByURLWithFallback(tidalURL, outputDir, quality, filenameFormat, includeTrackNumber, position, spotifyTrackName, spotifyArtistName, spotifyAlbumName, spotifyAlbumArtist, spotifyReleaseDate, useAlbumTrackNumber, spotifyCoverURL, embedMaxQualityCover, spotifyTrackNumber, spotifyDiscNumber, spotifyTotalTracks, spotifyTotalDiscs, spotifyCopyright, spotifyPublisher, spotifyComposer, metadataSeparator, isrcOverride, spotifyURL, allowFallback, useFirstArtistOnly, useSingleGenre, embedGenre)
@@ -812,10 +723,12 @@ func parseManifest(manifestB64 string) (directURL string, initURL string, mediaU
 
 	var mpd MPD
 	var segTemplate *SegmentTemplate
+	var dashMimeType string
 
 	if err := xml.Unmarshal(manifestBytes, &mpd); err == nil {
 		var selectedBandwidth int
 		var selectedCodecs string
+		var selectedMimeType string
 
 		for _, as := range mpd.Period.AdaptationSets {
 
@@ -824,6 +737,7 @@ func parseManifest(manifestB64 string) (directURL string, initURL string, mediaU
 				if segTemplate == nil {
 					segTemplate = as.SegmentTemplate
 					selectedCodecs = as.Codecs
+					selectedMimeType = as.MimeType
 				}
 			}
 
@@ -838,6 +752,8 @@ func parseManifest(manifestB64 string) (directURL string, initURL string, mediaU
 						} else {
 							selectedCodecs = as.Codecs
 						}
+
+						selectedMimeType = as.MimeType
 					}
 				}
 			}
@@ -845,6 +761,7 @@ func parseManifest(manifestB64 string) (directURL string, initURL string, mediaU
 
 		if selectedBandwidth > 0 {
 			fmt.Printf("Selected stream: Codec=%s, Bandwidth=%d bps\n", selectedCodecs, selectedBandwidth)
+			dashMimeType = fmt.Sprintf("%s; codecs=\"%s\"", selectedMimeType, selectedCodecs)
 		}
 	}
 
@@ -870,7 +787,7 @@ func parseManifest(manifestB64 string) (directURL string, initURL string, mediaU
 			mediaURL := strings.ReplaceAll(mediaTemplate, "$Number$", fmt.Sprintf("%d", i))
 			mediaURLs = append(mediaURLs, mediaURL)
 		}
-		return "", initURL, mediaURLs, "", nil
+		return "", initURL, mediaURLs, dashMimeType, nil
 	}
 
 	fmt.Println("Using regex fallback for DASH manifest...")
@@ -917,82 +834,104 @@ func parseManifest(manifestB64 string) (directURL string, initURL string, mediaU
 		mediaURLs = append(mediaURLs, mediaURL)
 	}
 
-	return "", initURL, mediaURLs, "", nil
+	return "", initURL, mediaURLs, dashMimeType, nil
 }
 
-func getDownloadURLRotated(apis []string, trackID int64, quality string) (string, string, error) {
+func (t *TidalDownloader) downloadWithRotatingAPIs(trackID int64, outputFilename string, quality string, allowFallback bool) (string, error) {
+	qualities := []string{quality}
+	if isTidalHiResQuality(quality) && allowFallback {
+		qualities = append(qualities, "LOSSLESS")
+	}
+
+	var lastErr error
+	for idx, candidateQuality := range qualities {
+		if idx > 0 {
+			fmt.Printf("⚠ %s unavailable/failed on all APIs, falling back to %s...\n", quality, candidateQuality)
+		}
+
+		apiURL, err := t.tryDownloadAcrossTidalAPIs(trackID, outputFilename, candidateQuality, false)
+		if err == nil {
+			return apiURL, nil
+		}
+		lastErr = err
+	}
+
+	if lastErr == nil {
+		lastErr = fmt.Errorf("no tidal api succeeded")
+	}
+	return "", lastErr
+}
+
+func (t *TidalDownloader) tryDownloadAcrossTidalAPIs(trackID int64, outputFilename string, quality string, refreshed bool) (string, error) {
+	apis, err := getConfiguredTidalAPIAttemptList()
+	if err != nil && len(apis) == 0 {
+		return "", fmt.Errorf("failed to load tidal api list: %w", err)
+	}
 	if len(apis) == 0 {
-		return "", "", fmt.Errorf("no APIs available")
+		return "", fmt.Errorf("no tidal apis available")
 	}
 
-	orderedAPIs := prioritizeProviders("tidal", apis)
-	fmt.Printf("Trying %d prioritized APIs...\n", len(orderedAPIs))
+	var lastErr error
+	errors := make([]string, 0, len(apis))
 
-	var lastError error
-	var errors []string
+	for _, apiURL := range apis {
+		fmt.Printf("Trying Tidal API: %s\n", apiURL)
 
-	for _, apiURL := range orderedAPIs {
-		fmt.Printf("Trying API: %s\n", apiURL)
-
-		client := &http.Client{
-			Timeout: 15 * time.Second,
-		}
-
-		url := fmt.Sprintf("%s/track/?id=%d&quality=%s", apiURL, trackID, quality)
-		resp, err := client.Get(url)
+		downloader := NewTidalDownloader(apiURL)
+		downloadURL, err := downloader.GetDownloadURL(trackID, quality)
 		if err != nil {
-			lastError = err
-			recordProviderFailure("tidal", apiURL)
+			lastErr = err
 			errors = append(errors, fmt.Sprintf("%s: %v", apiURL, err))
 			continue
 		}
 
-		if resp.StatusCode != 200 {
-			resp.Body.Close()
-			lastError = fmt.Errorf("HTTP %d", resp.StatusCode)
-			recordProviderFailure("tidal", apiURL)
-			errors = append(errors, fmt.Sprintf("%s: %v", apiURL, lastError))
+		if err := downloader.DownloadFile(downloadURL, outputFilename, quality); err != nil {
+			lastErr = err
+			cleanupTidalDownloadArtifacts(outputFilename)
+			errors = append(errors, fmt.Sprintf("%s: %v", apiURL, err))
 			continue
 		}
 
-		body, err := io.ReadAll(resp.Body)
-		resp.Body.Close()
-		if err != nil {
-			lastError = err
-			recordProviderFailure("tidal", apiURL)
-			errors = append(errors, fmt.Sprintf("%s: read body failed", apiURL))
-			continue
+		if err := RememberTidalAPIUsage(apiURL); err != nil {
+			fmt.Printf("Warning: failed to persist last used Tidal API: %v\n", err)
 		}
 
-		var v2Response TidalAPIResponseV2
-		if err := json.Unmarshal(body, &v2Response); err == nil && v2Response.Data.Manifest != "" {
-			fmt.Printf("✓ Success with: %s\n", apiURL)
-			recordProviderSuccess("tidal", apiURL)
-			return apiURL, "MANIFEST:" + v2Response.Data.Manifest, nil
+		return apiURL, nil
 	}
 
-		var v1Responses []TidalAPIResponse
-		if err := json.Unmarshal(body, &v1Responses); err == nil {
-			for _, item := range v1Responses {
-				if item.OriginalTrackURL != "" {
-					fmt.Printf("✓ Success with: %s\n", apiURL)
-					recordProviderSuccess("tidal", apiURL)
-					return apiURL, item.OriginalTrackURL, nil
-				}
+	if !refreshed {
+		if _, refreshErr := RefreshTidalAPIList(true); refreshErr != nil {
+			errors = append(errors, fmt.Sprintf("gist refresh failed: %v", refreshErr))
+		} else {
+			fmt.Println("All cached Tidal APIs failed, refreshed gist list and retrying...")
+			return t.tryDownloadAcrossTidalAPIs(trackID, outputFilename, quality, true)
 		}
 	}
 
-		lastError = fmt.Errorf("no download URL or manifest in response")
-		recordProviderFailure("tidal", apiURL)
-		errors = append(errors, fmt.Sprintf("%s: %v", apiURL, lastError))
+	if lastErr == nil {
+		lastErr = fmt.Errorf("all tidal apis failed")
 	}
 
-	fmt.Println("All APIs failed:")
-	for _, e := range errors {
-		fmt.Printf("  ✗ %s\n", e)
+	fmt.Println("All Tidal APIs failed:")
+	for _, item := range errors {
+		fmt.Printf("  ✗ %s\n", item)
 	}
 
-	return "", "", fmt.Errorf("all %d APIs failed. Last error: %v", len(apis), lastError)
+	return "", fmt.Errorf("all tidal apis failed for quality %s: %w", quality, lastErr)
+}
+
+func cleanupTidalDownloadArtifacts(outputPath string) {
+	if outputPath == "" {
+		return
+	}
+
+	_ = os.Remove(outputPath)
+	_ = os.Remove(outputPath + ".m4a.tmp")
+}
+
+func isTidalHiResQuality(quality string) bool {
+	normalized := strings.TrimSpace(strings.ToUpper(quality))
+	return normalized == "HI_RES" || normalized == "HI_RES_LOSSLESS"
 }
 
 func buildTidalFilename(title, artist, album, albumArtist, releaseDate string, trackNumber, discNumber int, format string, includeTrackNumber bool, position int, useAlbumTrackNumber bool, extra ...string) string {

backend/tidal_api_list.go

@@ -0,0 +1,296 @@
+package backend
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"path/filepath"
+	"strings"
+	"sync"
+	"time"
+)
+
+const (
+	tidalAPIListGistURL   = "https://gist.githubusercontent.com/afkarxyz/2ce772b943321b9448b454f39403ce25/raw"
+	tidalAPIListCacheFile = "tidal-api-urls.json"
+)
+
+type tidalAPIListCache struct {
+	URLs        []string `json:"urls"`
+	LastUsedURL string   `json:"last_used_url,omitempty"`
+	UpdatedAt   int64    `json:"updated_at_unix"`
+	Source      string   `json:"source,omitempty"`
+}
+
+var (
+	tidalAPIListMu    sync.Mutex
+	tidalAPIListState *tidalAPIListCache
+)
+
+func loadTidalAPIListStateLocked() (*tidalAPIListCache, error) {
+	if tidalAPIListState != nil {
+		return cloneTidalAPIListState(tidalAPIListState), nil
+	}
+
+	appDir, err := EnsureAppDir()
+	if err != nil {
+		return nil, err
+	}
+
+	cachePath := filepath.Join(appDir, tidalAPIListCacheFile)
+	data, err := os.ReadFile(cachePath)
+	if err != nil {
+		if os.IsNotExist(err) {
+			state := &tidalAPIListCache{}
+			tidalAPIListState = cloneTidalAPIListState(state)
+			return cloneTidalAPIListState(state), nil
+		}
+		return nil, fmt.Errorf("failed to read tidal api cache: %w", err)
+	}
+
+	var state tidalAPIListCache
+	if err := json.Unmarshal(data, &state); err != nil {
+		return nil, fmt.Errorf("failed to parse tidal api cache: %w", err)
+	}
+
+	state.URLs = normalizeTidalAPIURLs(state.URLs)
+
+	tidalAPIListState = cloneTidalAPIListState(&state)
+	return cloneTidalAPIListState(&state), nil
+}
+
+func saveTidalAPIListStateLocked(state *tidalAPIListCache) error {
+	appDir, err := EnsureAppDir()
+	if err != nil {
+		return err
+	}
+
+	cachePath := filepath.Join(appDir, tidalAPIListCacheFile)
+	payload, err := json.MarshalIndent(state, "", "  ")
+	if err != nil {
+		return fmt.Errorf("failed to encode tidal api cache: %w", err)
+	}
+
+	if err := os.WriteFile(cachePath, payload, 0o644); err != nil {
+		return fmt.Errorf("failed to write tidal api cache: %w", err)
+	}
+
+	tidalAPIListState = cloneTidalAPIListState(state)
+	return nil
+}
+
+func cloneTidalAPIListState(state *tidalAPIListCache) *tidalAPIListCache {
+	if state == nil {
+		return nil
+	}
+
+	return &tidalAPIListCache{
+		URLs:        append([]string(nil), state.URLs...),
+		LastUsedURL: state.LastUsedURL,
+		UpdatedAt:   state.UpdatedAt,
+		Source:      state.Source,
+	}
+}
+
+func normalizeTidalAPIURLs(urls []string) []string {
+	seen := make(map[string]struct{}, len(urls))
+	normalized := make([]string, 0, len(urls))
+
+	for _, rawURL := range urls {
+		url := strings.TrimRight(strings.TrimSpace(rawURL), "/")
+		if url == "" {
+			continue
+		}
+		if _, exists := seen[url]; exists {
+			continue
+		}
+		seen[url] = struct{}{}
+		normalized = append(normalized, url)
+	}
+
+	return normalized
+}
+
+func fetchTidalAPIURLsFromGist() ([]string, error) {
+	client := &http.Client{Timeout: 12 * time.Second}
+	req, err := NewRequestWithDefaultHeaders(http.MethodGet, tidalAPIListGistURL, nil)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create tidal api gist request: %w", err)
+	}
+
+	resp, err := client.Do(req)
+	if err != nil {
+		return nil, fmt.Errorf("failed to fetch tidal api gist: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		preview, _ := io.ReadAll(io.LimitReader(resp.Body, 200))
+		return nil, fmt.Errorf("tidal api gist returned status %d: %s", resp.StatusCode, strings.TrimSpace(string(preview)))
+	}
+
+	var urls []string
+	if err := json.NewDecoder(resp.Body).Decode(&urls); err != nil {
+		return nil, fmt.Errorf("failed to decode tidal api gist: %w", err)
+	}
+
+	urls = normalizeTidalAPIURLs(urls)
+	if len(urls) == 0 {
+		return nil, fmt.Errorf("tidal api gist returned no valid urls")
+	}
+
+	return urls, nil
+}
+
+func PrimeTidalAPIList() error {
+	_, err := RefreshTidalAPIList(true)
+	if err != nil {
+		fmt.Printf("Warning: failed to refresh Tidal API list from gist: %v\n", err)
+	}
+
+	tidalAPIListMu.Lock()
+	defer tidalAPIListMu.Unlock()
+
+	state, loadErr := loadTidalAPIListStateLocked()
+	if loadErr != nil {
+		return loadErr
+	}
+
+	if len(state.URLs) == 0 {
+		return fmt.Errorf("tidal api cache is empty")
+	}
+
+	if state.UpdatedAt == 0 {
+		state.UpdatedAt = time.Now().Unix()
+		return saveTidalAPIListStateLocked(state)
+	}
+
+	return nil
+}
+
+func RefreshTidalAPIList(force bool) ([]string, error) {
+	tidalAPIListMu.Lock()
+	defer tidalAPIListMu.Unlock()
+
+	state, err := loadTidalAPIListStateLocked()
+	if err != nil {
+		state = &tidalAPIListCache{}
+	}
+
+	if !force && len(state.URLs) > 0 {
+		return append([]string(nil), state.URLs...), nil
+	}
+
+	urls, fetchErr := fetchTidalAPIURLsFromGist()
+	if fetchErr != nil {
+		if len(state.URLs) > 0 {
+			return append([]string(nil), state.URLs...), fetchErr
+		}
+		return nil, fetchErr
+	}
+
+	state.URLs = urls
+	state.UpdatedAt = time.Now().Unix()
+	state.Source = "gist"
+
+	if !containsString(state.URLs, state.LastUsedURL) {
+		state.LastUsedURL = ""
+	}
+
+	if err := saveTidalAPIListStateLocked(state); err != nil {
+		return append([]string(nil), state.URLs...), err
+	}
+
+	return append([]string(nil), state.URLs...), nil
+}
+
+func GetTidalAPIList() ([]string, error) {
+	tidalAPIListMu.Lock()
+	defer tidalAPIListMu.Unlock()
+
+	state, err := loadTidalAPIListStateLocked()
+	if err != nil {
+		return nil, err
+	}
+
+	if len(state.URLs) == 0 {
+		return nil, fmt.Errorf("no cached tidal api urls")
+	}
+
+	return append([]string(nil), state.URLs...), nil
+}
+
+func GetRotatedTidalAPIList() ([]string, error) {
+	tidalAPIListMu.Lock()
+	defer tidalAPIListMu.Unlock()
+
+	state, err := loadTidalAPIListStateLocked()
+	if err != nil {
+		return nil, err
+	}
+
+	urls := state.URLs
+	if len(urls) == 0 {
+		return nil, fmt.Errorf("no cached tidal api urls")
+	}
+
+	return rotateTidalAPIURLs(urls, state.LastUsedURL), nil
+}
+
+func RememberTidalAPIUsage(apiURL string) error {
+	tidalAPIListMu.Lock()
+	defer tidalAPIListMu.Unlock()
+
+	state, err := loadTidalAPIListStateLocked()
+	if err != nil {
+		return err
+	}
+
+	state.LastUsedURL = strings.TrimRight(strings.TrimSpace(apiURL), "/")
+	if state.UpdatedAt == 0 {
+		state.UpdatedAt = time.Now().Unix()
+	}
+
+	return saveTidalAPIListStateLocked(state)
+}
+
+func rotateTidalAPIURLs(urls []string, lastUsedURL string) []string {
+	normalized := normalizeTidalAPIURLs(urls)
+	if len(normalized) < 2 {
+		return normalized
+	}
+
+	lastUsedURL = strings.TrimRight(strings.TrimSpace(lastUsedURL), "/")
+	if lastUsedURL == "" {
+		return normalized
+	}
+
+	lastIndex := -1
+	for idx, candidate := range normalized {
+		if candidate == lastUsedURL {
+			lastIndex = idx
+			break
+		}
+	}
+
+	if lastIndex == -1 {
+		return normalized
+	}
+
+	rotated := make([]string, 0, len(normalized))
+	rotated = append(rotated, normalized[lastIndex+1:]...)
+	rotated = append(rotated, normalized[:lastIndex+1]...)
+	return rotated
+}
+
+func containsString(values []string, target string) bool {
+	target = strings.TrimRight(strings.TrimSpace(target), "/")
+	for _, value := range values {
+		if strings.TrimRight(strings.TrimSpace(value), "/") == target {
+			return true
+		}
+	}
+	return false
+}

frontend/package.json

@@ -20,6 +20,7 @@
     "@radix-ui/react-progress": "^1.1.8",
     "@radix-ui/react-scroll-area": "^1.2.10",
     "@radix-ui/react-select": "^2.2.6",
+    "@radix-ui/react-slider": "^1.3.6",
     "@radix-ui/react-slot": "^1.2.4",
     "@radix-ui/react-switch": "^1.2.6",
     "@radix-ui/react-tabs": "^1.1.13",

frontend/package.json.md5

@@ -1 +1 @@
-867c45db7982e126a7249d80210f23be
+8864b4f7b7971b624d1ba25030f2db4e

frontend/pnpm-lock.yaml

@@ -32,6 +32,9 @@ importers:
       '@radix-ui/react-select':
         specifier: ^2.2.6
         version: 2.2.6(@types/react-dom@19.2.3(@types/react@19.2.14))(@types/react@19.2.14)(react-dom@19.2.4(react@19.2.4))(react@19.2.4)
+      '@radix-ui/react-slider':
+        specifier: ^1.3.6
+        version: 1.3.6(@types/react-dom@19.2.3(@types/react@19.2.14))(@types/react@19.2.14)(react-dom@19.2.4(react@19.2.4))(react@19.2.4)
       '@radix-ui/react-slot':
         specifier: ^1.2.4
         version: 1.2.4(@types/react@19.2.14)(react@19.2.4)

frontend/src/App.tsx

@@ -1,4 +1,4 @@
-import { useState, useEffect, useCallback, useLayoutEffect } from "react";
+import { useState, useEffect, useCallback, useLayoutEffect, useRef } from "react";
 import { Button } from "@/components/ui/button";
 import { Dialog, DialogContent, DialogDescription, DialogFooter, DialogHeader, DialogTitle, } from "@/components/ui/dialog";
 import { Search, X, ArrowUp } from "lucide-react";
@@ -32,7 +32,7 @@ import { useMetadata } from "@/hooks/useMetadata";
 import { useLyrics } from "@/hooks/useLyrics";
 import { useCover } from "@/hooks/useCover";
 import { useAvailability } from "@/hooks/useAvailability";
-import { ensureApiStatusCheckStarted } from "@/lib/api-status";
+import { ensureSpotiFLACNextStatusCheckStarted } from "@/lib/api-status";
 import { useDownloadQueueDialog } from "@/hooks/useDownloadQueueDialog";
 import { useDownloadProgress } from "@/hooks/useDownloadProgress";
 import { buildPlaylistFolderName } from "@/lib/playlist";
@@ -125,6 +125,7 @@ function parseStoredHistory(value: string | null): HistoryItem[] {
 }
 function App() {
     const [currentPage, setCurrentPage] = useState<PageType>("main");
+    const contentScrollRef = useRef<HTMLDivElement | null>(null);
     const [spotifyUrl, setSpotifyUrl] = useState("");
     const [selectedTracks, setSelectedTracks] = useState<string[]>([]);
     const [searchQuery, setSearchQuery] = useState("");
@@ -161,7 +162,7 @@ function App() {
         if (savedSettings) {
             applyThemeMode(savedSettings.themeMode);
             applyTheme(savedSettings.theme);
-            applyFont(savedSettings.fontFamily);
+            applyFont(savedSettings.fontFamily, savedSettings.customFonts);
         }
     }, []);
     useEffect(() => {
@@ -169,7 +170,7 @@ function App() {
             const settings = await loadSettings();
             applyThemeMode(settings.themeMode);
             applyTheme(settings.theme);
-            applyFont(settings.fontFamily);
+            applyFont(settings.fontFamily, settings.customFonts);
             if (!settings.downloadPath) {
                 const settingsWithDefaults = await getSettingsWithDefaults();
                 await saveSettings(settingsWithDefaults);
@@ -197,20 +198,33 @@ function App() {
         };
         mediaQuery.addEventListener("change", handleChange);
         checkForUpdates();
-        ensureApiStatusCheckStarted();
+        ensureSpotiFLACNextStatusCheckStarted();
         void loadHistory();
-        const handleScroll = () => {
-            setShowScrollTop(window.scrollY > 300);
-        };
-        window.addEventListener("scroll", handleScroll);
         return () => {
             mediaQuery.removeEventListener("change", handleChange);
-            window.removeEventListener("scroll", handleScroll);
+        };
+    }, []);
+    useEffect(() => {
+        const contentElement = contentScrollRef.current;
+        if (!contentElement) {
+            return;
+        }
+        const handleScroll = () => {
+            setShowScrollTop(contentElement.scrollTop > 300);
+        };
+        handleScroll();
+        contentElement.addEventListener("scroll", handleScroll, { passive: true });
+        return () => {
+            contentElement.removeEventListener("scroll", handleScroll);
         };
     }, []);
     const scrollToTop = useCallback(() => {
-        window.scrollTo({ top: 0, behavior: "smooth" });
+        contentScrollRef.current?.scrollTo({ top: 0, behavior: "smooth" });
     }, []);
+    useEffect(() => {
+        contentScrollRef.current?.scrollTo({ top: 0, behavior: "auto" });
+        setShowScrollTop(false);
+    }, [currentPage]);
     useEffect(() => {
         setSelectedTracks([]);
         setSearchQuery("");
@@ -432,7 +446,7 @@ function App() {
         }
         if ("album_info" in metadata.metadata) {
             const { album_info, track_list } = metadata.metadata;
-            return (<AlbumInfo albumInfo={album_info} trackList={track_list} searchQuery={searchQuery} sortBy={sortBy} selectedTracks={selectedTracks} downloadedTracks={download.downloadedTracks} failedTracks={download.failedTracks} skippedTracks={download.skippedTracks} downloadingTrack={download.downloadingTrack} isDownloading={download.isDownloading} bulkDownloadType={download.bulkDownloadType} downloadProgress={download.downloadProgress} currentDownloadInfo={download.currentDownloadInfo} 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} isBulkDownloadingLyrics={lyrics.isBulkDownloadingLyrics} isMetadataLoading={metadata.loading} onSearchChange={handleSearchChange} onSortChange={setSortBy} onToggleTrack={toggleTrackSelection} onToggleSelectAll={toggleSelectAll} onDownloadTrack={download.handleDownloadTrack} onDownloadLyrics={(spotifyId, name, artists, albumName, _folderName, _isArtistDiscography, position, albumArtist, releaseDate, discNumber) => lyrics.handleDownloadLyrics(spotifyId, name, artists, albumName, album_info.name, position, albumArtist, releaseDate, discNumber, true)} onDownloadCover={(coverUrl, trackName, artistName, albumName, _folderName, _isArtistDiscography, position, trackId, albumArtist, releaseDate, discNumber) => cover.handleDownloadCover(coverUrl, trackName, artistName, albumName, album_info.name, position, trackId, albumArtist, releaseDate, discNumber, true)} onCheckAvailability={availability.checkAvailability} onDownloadAllLyrics={() => lyrics.handleDownloadAllLyrics(track_list, album_info.name, undefined, true)} onDownloadAllCovers={() => cover.handleDownloadAllCovers(track_list, album_info.name, true)} onDownloadAll={() => download.handleDownloadAll(track_list, album_info.name, true)} onDownloadSelected={() => download.handleDownloadSelected(selectedTracks, track_list, album_info.name, true)} onStopDownload={download.handleStopDownload} onOpenFolder={handleOpenFolder} onPageChange={setCurrentListPage} onBack={metadata.resetMetadata} onArtistClick={async (artist) => {
+            return (<AlbumInfo albumInfo={album_info} trackList={track_list} searchQuery={searchQuery} sortBy={sortBy} selectedTracks={selectedTracks} downloadedTracks={download.downloadedTracks} failedTracks={download.failedTracks} skippedTracks={download.skippedTracks} downloadingTrack={download.downloadingTrack} isDownloading={download.isDownloading} bulkDownloadType={download.bulkDownloadType} downloadProgress={download.downloadProgress} downloadRemainingCount={download.downloadRemainingCount} currentDownloadInfo={download.currentDownloadInfo} 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} isBulkDownloadingLyrics={lyrics.isBulkDownloadingLyrics} isMetadataLoading={metadata.loading} onSearchChange={handleSearchChange} onSortChange={setSortBy} onToggleTrack={toggleTrackSelection} onToggleSelectAll={toggleSelectAll} onDownloadTrack={download.handleDownloadTrack} onDownloadLyrics={(spotifyId, name, artists, albumName, _folderName, _isArtistDiscography, position, albumArtist, releaseDate, discNumber) => lyrics.handleDownloadLyrics(spotifyId, name, artists, albumName, album_info.name, position, albumArtist, releaseDate, discNumber, true)} onDownloadCover={(coverUrl, trackName, artistName, albumName, _folderName, _isArtistDiscography, position, trackId, albumArtist, releaseDate, discNumber) => cover.handleDownloadCover(coverUrl, trackName, artistName, albumName, album_info.name, position, trackId, albumArtist, releaseDate, discNumber, true)} onCheckAvailability={availability.checkAvailability} onDownloadAllLyrics={() => lyrics.handleDownloadAllLyrics(track_list, album_info.name, undefined, true)} onDownloadAllCovers={() => cover.handleDownloadAllCovers(track_list, album_info.name, true)} onDownloadAll={() => download.handleDownloadAll(track_list, album_info.name, true)} onDownloadSelected={() => download.handleDownloadSelected(selectedTracks, track_list, album_info.name, true)} onStopDownload={download.handleStopDownload} onOpenFolder={handleOpenFolder} onPageChange={setCurrentListPage} onBack={metadata.resetMetadata} onArtistClick={async (artist) => {
                     const pendingArtistUrl = artist.external_urls.replace(/\/$/, "") + "/discography/all";
                     setSpotifyUrl(pendingArtistUrl);
                     const artistUrl = await metadata.handleArtistClick(artist);
@@ -450,7 +464,7 @@ function App() {
             const { playlist_info, track_list } = metadata.metadata;
             const settings = getSettings();
             const playlistFolderName = buildPlaylistFolderName(playlist_info.owner.name, playlist_info.owner.display_name, settings.playlistOwnerFolderName);
-            return (<PlaylistInfo playlistInfo={playlist_info} trackList={track_list} searchQuery={searchQuery} sortBy={sortBy} selectedTracks={selectedTracks} downloadedTracks={download.downloadedTracks} failedTracks={download.failedTracks} skippedTracks={download.skippedTracks} downloadingTrack={download.downloadingTrack} isDownloading={download.isDownloading} bulkDownloadType={download.bulkDownloadType} downloadProgress={download.downloadProgress} currentDownloadInfo={download.currentDownloadInfo} 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} isBulkDownloadingLyrics={lyrics.isBulkDownloadingLyrics} isMetadataLoading={metadata.loading} onSearchChange={handleSearchChange} onSortChange={setSortBy} onToggleTrack={toggleTrackSelection} onToggleSelectAll={toggleSelectAll} onDownloadTrack={download.handleDownloadTrack} onDownloadLyrics={(spotifyId, name, artists, albumName, _folderName, _isArtistDiscography, position, albumArtist, releaseDate, discNumber) => lyrics.handleDownloadLyrics(spotifyId, name, artists, albumName, playlistFolderName, position, albumArtist, releaseDate, discNumber)} onDownloadCover={(coverUrl, trackName, artistName, albumName, _folderName, _isArtistDiscography, position, trackId, albumArtist, releaseDate, discNumber) => cover.handleDownloadCover(coverUrl, trackName, artistName, albumName, playlistFolderName, position, trackId, albumArtist, releaseDate, discNumber)} onCheckAvailability={availability.checkAvailability} onDownloadAllLyrics={() => lyrics.handleDownloadAllLyrics(track_list, playlistFolderName)} onDownloadAllCovers={() => cover.handleDownloadAllCovers(track_list, playlistFolderName)} onDownloadAll={() => download.handleDownloadAll(track_list, playlistFolderName)} onDownloadSelected={() => download.handleDownloadSelected(selectedTracks, track_list, playlistFolderName)} onStopDownload={download.handleStopDownload} onOpenFolder={handleOpenFolder} onPageChange={setCurrentListPage} onBack={metadata.resetMetadata} onAlbumClick={metadata.handleAlbumClick} onArtistClick={async (artist) => {
+            return (<PlaylistInfo playlistInfo={playlist_info} trackList={track_list} searchQuery={searchQuery} sortBy={sortBy} selectedTracks={selectedTracks} downloadedTracks={download.downloadedTracks} failedTracks={download.failedTracks} skippedTracks={download.skippedTracks} downloadingTrack={download.downloadingTrack} isDownloading={download.isDownloading} bulkDownloadType={download.bulkDownloadType} downloadProgress={download.downloadProgress} downloadRemainingCount={download.downloadRemainingCount} currentDownloadInfo={download.currentDownloadInfo} 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} isBulkDownloadingLyrics={lyrics.isBulkDownloadingLyrics} isMetadataLoading={metadata.loading} onSearchChange={handleSearchChange} onSortChange={setSortBy} onToggleTrack={toggleTrackSelection} onToggleSelectAll={toggleSelectAll} onDownloadTrack={download.handleDownloadTrack} onDownloadLyrics={(spotifyId, name, artists, albumName, _folderName, _isArtistDiscography, position, albumArtist, releaseDate, discNumber) => lyrics.handleDownloadLyrics(spotifyId, name, artists, albumName, playlistFolderName, position, albumArtist, releaseDate, discNumber)} onDownloadCover={(coverUrl, trackName, artistName, albumName, _folderName, _isArtistDiscography, position, trackId, albumArtist, releaseDate, discNumber) => cover.handleDownloadCover(coverUrl, trackName, artistName, albumName, playlistFolderName, position, trackId, albumArtist, releaseDate, discNumber)} onCheckAvailability={availability.checkAvailability} onDownloadAllLyrics={() => lyrics.handleDownloadAllLyrics(track_list, playlistFolderName)} onDownloadAllCovers={() => cover.handleDownloadAllCovers(track_list, playlistFolderName)} onDownloadAll={() => download.handleDownloadAll(track_list, playlistFolderName)} onDownloadSelected={() => download.handleDownloadSelected(selectedTracks, track_list, playlistFolderName)} onStopDownload={download.handleStopDownload} onOpenFolder={handleOpenFolder} onPageChange={setCurrentListPage} onBack={metadata.resetMetadata} onAlbumClick={metadata.handleAlbumClick} onArtistClick={async (artist) => {
                     const pendingArtistUrl = artist.external_urls.replace(/\/$/, "") + "/discography/all";
                     setSpotifyUrl(pendingArtistUrl);
                     const artistUrl = await metadata.handleArtistClick(artist);
@@ -466,7 +480,7 @@ function App() {
         }
         if ("artist_info" in metadata.metadata) {
             const { artist_info, album_list, track_list } = metadata.metadata;
-            return (<ArtistInfo artistInfo={artist_info} albumList={album_list} trackList={track_list} searchQuery={searchQuery} sortBy={sortBy} selectedTracks={selectedTracks} downloadedTracks={download.downloadedTracks} failedTracks={download.failedTracks} skippedTracks={download.skippedTracks} downloadingTrack={download.downloadingTrack} isDownloading={download.isDownloading} bulkDownloadType={download.bulkDownloadType} downloadProgress={download.downloadProgress} currentDownloadInfo={download.currentDownloadInfo} 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} isBulkDownloadingLyrics={lyrics.isBulkDownloadingLyrics} isMetadataLoading={metadata.loading} onSearchChange={handleSearchChange} onSortChange={setSortBy} onToggleTrack={toggleTrackSelection} onToggleSelectAll={toggleSelectAll} onDownloadTrack={download.handleDownloadTrack} onDownloadLyrics={(spotifyId, name, artists, albumName, _folderName, _isArtistDiscography, position, albumArtist, releaseDate, discNumber) => lyrics.handleDownloadLyrics(spotifyId, name, artists, albumName, artist_info.name, position, albumArtist, releaseDate, discNumber)} onDownloadCover={(coverUrl, trackName, artistName, albumName, _folderName, _isArtistDiscography, position, trackId, albumArtist, releaseDate, discNumber) => cover.handleDownloadCover(coverUrl, trackName, artistName, albumName, artist_info.name, position, trackId, albumArtist, releaseDate, discNumber)} onCheckAvailability={availability.checkAvailability} onDownloadAllLyrics={() => lyrics.handleDownloadAllLyrics(track_list, artist_info.name)} onDownloadAllCovers={() => cover.handleDownloadAllCovers(track_list, artist_info.name)} onDownloadAll={() => download.handleDownloadAll(track_list, artist_info.name)} onDownloadSelected={() => download.handleDownloadSelected(selectedTracks, track_list, artist_info.name)} onStopDownload={download.handleStopDownload} onOpenFolder={handleOpenFolder} onAlbumClick={metadata.handleAlbumClick} onBack={metadata.resetMetadata} onArtistClick={async (artist) => {
+            return (<ArtistInfo artistInfo={artist_info} albumList={album_list} trackList={track_list} searchQuery={searchQuery} sortBy={sortBy} selectedTracks={selectedTracks} downloadedTracks={download.downloadedTracks} failedTracks={download.failedTracks} skippedTracks={download.skippedTracks} downloadingTrack={download.downloadingTrack} isDownloading={download.isDownloading} bulkDownloadType={download.bulkDownloadType} downloadProgress={download.downloadProgress} downloadRemainingCount={download.downloadRemainingCount} currentDownloadInfo={download.currentDownloadInfo} 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} isBulkDownloadingLyrics={lyrics.isBulkDownloadingLyrics} isMetadataLoading={metadata.loading} onSearchChange={handleSearchChange} onSortChange={setSortBy} onToggleTrack={toggleTrackSelection} onToggleSelectAll={toggleSelectAll} onDownloadTrack={download.handleDownloadTrack} onDownloadLyrics={(spotifyId, name, artists, albumName, _folderName, _isArtistDiscography, position, albumArtist, releaseDate, discNumber) => lyrics.handleDownloadLyrics(spotifyId, name, artists, albumName, artist_info.name, position, albumArtist, releaseDate, discNumber)} onDownloadCover={(coverUrl, trackName, artistName, albumName, _folderName, _isArtistDiscography, position, trackId, albumArtist, releaseDate, discNumber) => cover.handleDownloadCover(coverUrl, trackName, artistName, albumName, artist_info.name, position, trackId, albumArtist, releaseDate, discNumber)} onCheckAvailability={availability.checkAvailability} onDownloadAllLyrics={() => lyrics.handleDownloadAllLyrics(track_list, artist_info.name)} onDownloadAllCovers={() => cover.handleDownloadAllCovers(track_list, artist_info.name)} onDownloadAll={() => download.handleDownloadAll(track_list, artist_info.name)} onDownloadSelected={() => download.handleDownloadSelected(selectedTracks, track_list, artist_info.name)} onStopDownload={download.handleStopDownload} onOpenFolder={handleOpenFolder} onAlbumClick={metadata.handleAlbumClick} onBack={metadata.resetMetadata} onArtistClick={async (artist) => {
                     const pendingArtistUrl = artist.external_urls.replace(/\/$/, "") + "/discography/all";
                     setSpotifyUrl(pendingArtistUrl);
                     const artistUrl = await metadata.handleArtistClick(artist);
@@ -498,7 +512,7 @@ function App() {
         const savedSettings = getSettings();
         applyThemeMode(savedSettings.themeMode);
         applyTheme(savedSettings.theme);
-        applyFont(savedSettings.fontFamily);
+        applyFont(savedSettings.fontFamily, savedSettings.customFonts);
         if (pendingPageChange) {
             setCurrentPage(pendingPageChange);
             setPendingPageChange(null);
@@ -537,7 +551,7 @@ function App() {
 
 
                     <Dialog open={metadata.showAlbumDialog} onOpenChange={metadata.setShowAlbumDialog}>
-                        <DialogContent className="sm:max-w-[425px] p-6 [&>button]:hidden">
+                        <DialogContent className="sm:max-w-106.25 p-6 [&>button]:hidden">
                             <div className="absolute right-4 top-4">
                                 <Button variant="ghost" size="icon" className="h-6 w-6 opacity-70 hover:opacity-100" onClick={() => metadata.setShowAlbumDialog(false)}>
                                     <X className="h-4 w-4"/>
@@ -584,16 +598,18 @@ function App() {
         }
     };
     return (<TooltipProvider>
-        <div className="min-h-screen bg-background flex flex-col">
+        <div className="h-screen overflow-hidden bg-background">
             <TitleBar />
             <Sidebar currentPage={currentPage} onPageChange={handlePageChange}/>
 
 
-            <div className="flex-1 ml-14 mt-10 p-4 md:p-8">
+            <div ref={contentScrollRef} className="fixed top-10 right-0 bottom-0 left-14 overflow-y-auto overflow-x-hidden">
+                <div className="p-4 md:p-8">
                     <div className="max-w-4xl mx-auto space-y-6">
                         {renderPage()}
                     </div>
                 </div>
+            </div>
 
 
             <DownloadProgressToast onClick={downloadQueue.openQueue}/>
@@ -608,7 +624,7 @@ function App() {
 
 
             <Dialog open={showUnsavedChangesDialog} onOpenChange={setShowUnsavedChangesDialog}>
-                <DialogContent className="sm:max-w-[425px] [&>button]:hidden">
+                <DialogContent className="sm:max-w-106.25 [&>button]:hidden">
                     <DialogHeader>
                         <DialogTitle>Unsaved Changes</DialogTitle>
                         <DialogDescription>
@@ -655,7 +671,7 @@ function App() {
             </Dialog>
 
             <Dialog open={isFFmpegInstalled === false} onOpenChange={() => { }}>
-                <DialogContent className="max-w-[450px] [&>button]:hidden p-6 gap-5">
+                <DialogContent className="max-w-112.5 [&>button]:hidden p-6 gap-5">
                     <DialogHeader className="space-y-2">
                         <DialogTitle className="text-lg font-bold tracking-tight">
                             FFmpeg Required

frontend/src/assets/icons/spotidownloader.svg

@@ -1,23 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<svg xmlns="http://www.w3.org/2000/svg" version="1.1" xmlns:sketch="http://www.bohemiancoding.com/sketch/ns" viewBox="0 0 512 512">
-  <defs>
-    <style>
-      .cls-1 {
-        fill: #2dc261;
-        fill-rule: evenodd;
-      }
-    </style>
-  </defs>
-  <!-- Generator: Adobe Illustrator 28.7.2, SVG Export Plug-In . SVG Version: 1.2.0 Build 154)  -->
-  <g>
-    <g id="Layer_1">
-      <g id="SVGRepo_iconCarrier">
-        <g id="Page-1" sketch:type="MSPage">
-          <g id="Icon-Set-Filled" sketch:type="MSLayerGroup">
-            <path id="arrow-right-circle" class="cls-1" d="M350.1,268.7l-81.5,81.5c-5.6,5.6-14.7,5.6-20.4,0-5.6-5.6-5.6-14.8,0-20.5l59.4-59.3h-152.5c-8,0-14.4-6.5-14.4-14.4s6.4-14.4,14.4-14.4h152.5l-59.4-59.3c-5.6-5.6-5.6-14.7,0-20.5,5.6-5.6,14.7-5.6,20.4,0l81.5,81.5c3.5,3.5,4.5,8.2,3.7,12.7.8,4.5-.3,9.2-3.7,12.7h0ZM256,25.6c-127.3,0-230.4,103.1-230.4,230.4s103.2,230.4,230.4,230.4,230.4-103.1,230.4-230.4S383.3,25.6,256,25.6h0Z" sketch:type="MSShapeGroup"/>
-          </g>
-        </g>
-      </g>
-    </g>
-  </g>
-</svg>

frontend/src/components/AboutPage.tsx

@@ -8,7 +8,6 @@ import ChatGPTTTSIcon from "@/assets/chatgpt-tts.webp";
 import XIcon from "@/assets/x.webp";
 import XProIcon from "@/assets/x-pro.webp";
 import SpotubeDLIcon from "@/assets/icons/spotubedl.svg";
-import SpotiDownloaderIcon from "@/assets/icons/spotidownloader.svg";
 import XBatchDLIcon from "@/assets/icons/xbatchdl.svg";
 import SpotiFLACNextIcon from "@/assets/icons/next.svg";
 import KofiLogo from "@/assets/ko-fi.gif";
@@ -21,7 +20,12 @@ const browserExtensionItems = [
     { icon: XIcon, label: "Twitter/X Media Batch Downloader", alt: "Twitter/X Media Batch Downloader" },
     { icon: XProIcon, label: "Twitter/X Media Batch Downloader Pro", alt: "Twitter/X Media Batch Downloader Pro" },
 ];
-const projectCardClass = "cursor-pointer transition-colors hover:bg-muted/50 dark:hover:bg-accent/50";
+const projectCardClass = "cursor-pointer gap-3 py-5 transition-colors hover:bg-muted/50 dark:hover:bg-accent/50";
+const projectCardHeaderClass = "px-5 gap-1.5";
+const projectCardContentClass = "px-5";
+const projectBodyClass = "text-[13px] leading-snug";
+const releaseMetaClass = "text-xs text-muted-foreground whitespace-nowrap";
+const releaseVersionClass = "text-xs bg-primary text-primary-foreground px-1.5 py-0.5 rounded-sm font-mono font-semibold whitespace-nowrap";
 export function AboutPage() {
     const [activeTab, setActiveTab] = useState<"projects" | "support">("projects");
     const [repoStats, setRepoStats] = useState<Record<string, any>>({});
@@ -44,8 +48,7 @@ export function AboutPage() {
                 }
             }
             const repos = [
-                { name: "SpotiDownloader", owner: "afkarxyz" },
-                { name: "SpotiFLAC-Next", owner: "spotiverse" },
+                { name: "SpotiFLAC-Next", owner: "spotbye" },
                 { name: "Twitter-X-Media-Batch-Downloader", owner: "afkarxyz" },
             ];
             const stats: Record<string, any> = {};
@@ -176,7 +179,7 @@ export function AboutPage() {
     const getRepoDescription = (repoName: string): string => {
         return repoStats[repoName]?.description || "";
     };
-    return (<div className="flex flex-col space-y-4">
+    return (<div className="flex flex-col space-y-3">
       <div className="flex items-center justify-between shrink-0">
         <h2 className="text-2xl font-bold tracking-tight">About</h2>
       </div>
@@ -195,17 +198,17 @@ export function AboutPage() {
       <div className="flex-1 min-h-0">
 
 
-        {activeTab === "projects" && (<div className="p-1 pr-2">
-            <div className="grid gap-2 grid-cols-4">
-              <Card className={`gap-2 ${projectCardClass}`} onClick={() => openExternal("https://github.com/spotbye/SpotiFLAC-Next")}>
-                <CardHeader>
+        {activeTab === "projects" && (<div className="pr-1.5">
+            <div className="grid gap-2 grid-cols-3">
+              <Card className={projectCardClass} onClick={() => openExternal("https://github.com/spotbye/SpotiFLAC-Next")}>
+                <CardHeader className={projectCardHeaderClass}>
                   <div className="flex justify-between items-start mb-2">
                     <img src={SpotiFLACNextIcon} className="h-6 w-6 shrink-0" alt="SpotiFLAC Next"/>
-                    <div className="flex items-center gap-2">
-                      {repoStats["SpotiFLAC-Next"]?.latestReleaseAt && (<span className="text-[10px] text-muted-foreground whitespace-nowrap">
+                    <div className="ml-3 flex flex-wrap items-center justify-end gap-2">
+                      {repoStats["SpotiFLAC-Next"]?.latestReleaseAt && (<span className={releaseMetaClass}>
                           {formatReleaseTimeAgo(repoStats["SpotiFLAC-Next"].latestReleaseAt)}
                         </span>)}
-                      {repoStats["SpotiFLAC-Next"]?.latestVersion && (<span className="text-[10px] bg-primary text-primary-foreground px-1.5 py-0.5 rounded-sm font-mono font-semibold max-w-[80px] truncate">
+                      {repoStats["SpotiFLAC-Next"]?.latestVersion && (<span className={releaseVersionClass}>
                           {repoStats["SpotiFLAC-Next"].latestVersion}
                         </span>)}
                     </div>
@@ -213,11 +216,11 @@ export function AboutPage() {
                   <CardTitle className="leading-tight">
                     SpotiFLAC Next
                   </CardTitle>
-                  <CardDescription>
+                  <CardDescription className={projectBodyClass}>
                     {getRepoDescription("SpotiFLAC-Next")}
                   </CardDescription>
                 </CardHeader>
-                {repoStats["SpotiFLAC-Next"] && (<CardContent className="space-y-2">
+                {repoStats["SpotiFLAC-Next"] && (<CardContent className={`${projectCardContentClass} space-y-2`}>
                     {repoStats["SpotiFLAC-Next"].languages?.length > 0 && (<div className="flex flex-wrap gap-2 text-xs">
                         {repoStats["SpotiFLAC-Next"].languages.map((lang: string) => (<span key={lang} className="px-2 py-0.5 rounded-full font-medium" style={{
                             backgroundColor: getLangColor(lang) + "20",
@@ -245,76 +248,21 @@ export function AboutPage() {
                         <Info className="h-3.5 w-3.5"/>
                         Note
                       </div>
-                      <p className="text-xs leading-relaxed text-sky-700 dark:text-sky-300">
-                        This project was created as a thank-you to everyone who has supported SpotiFLAC on Ko-fi.
+                      <p className="text-xs leading-snug text-sky-700 dark:text-sky-300">
+                        This project released as a token of appreciation for those who have supported SpotiFLAC on Ko-fi. It’s not a paid product, but it’s shared privately through a supporter-only post.
                       </p>
                     </div>
                   </CardContent>)}
               </Card>
-              <Card className={projectCardClass} onClick={() => openExternal("https://github.com/spotbye/SpotiDownloader")}>
-                <CardHeader>
-                  <div className="flex justify-between items-start mb-2">
-                    <img src={SpotiDownloaderIcon} className="h-6 w-6 shrink-0" alt="SpotiDownloader"/>
-                    <div className="flex items-center gap-2">
-                      {repoStats["SpotiDownloader"]?.latestReleaseAt && (<span className="text-[10px] text-muted-foreground whitespace-nowrap">
-                          {formatReleaseTimeAgo(repoStats["SpotiDownloader"].latestReleaseAt)}
-                        </span>)}
-                      {repoStats["SpotiDownloader"]?.latestVersion && (<span className="text-[10px] bg-primary text-primary-foreground px-1.5 py-0.5 rounded-sm font-mono font-semibold max-w-[80px] truncate">
-                          {repoStats["SpotiDownloader"].latestVersion}
-                        </span>)}
-                    </div>
-                  </div>
-                  <CardTitle className="leading-tight">
-                    SpotiDownloader
-                  </CardTitle>
-                  <CardDescription>
-                    {getRepoDescription("SpotiDownloader")}
-                  </CardDescription>
-                </CardHeader>
-                {repoStats["SpotiDownloader"] && (<CardContent className="space-y-3">
-                    <div className="flex flex-wrap gap-2 text-xs">
-                      {repoStats["SpotiDownloader"].languages?.map((lang: string) => (<span key={lang} className="px-2 py-0.5 rounded-full font-medium" style={{
-                        backgroundColor: getLangColor(lang) + "20",
-                        color: getLangColor(lang),
-                    }}>
-                            {lang}
-                          </span>))}
-                    </div>
-                    <div className="flex items-center gap-4 text-xs text-muted-foreground">
-                      <span className="flex items-center gap-1">
-                        <Star className="h-3.5 w-3.5 fill-amber-500 text-amber-500"/>{" "}
-                        {formatNumber(repoStats["SpotiDownloader"].stars)}
-                      </span>
-                      <span className="flex items-center gap-1">
-                        <GitFork className="h-3.5 w-3.5"/>{" "}
-                        {repoStats["SpotiDownloader"].forks}
-                      </span>
-                      <span className="flex items-center gap-1">
-                        <Clock className="h-3.5 w-3.5"/>{" "}
-                        {formatTimeAgo(repoStats["SpotiDownloader"].createdAt)}
-                      </span>
-                    </div>
-                    <div className="flex flex-col gap-1 text-xs text-muted-foreground items-start">
-                      <span className="flex items-center gap-1">
-                        <Download className="h-3.5 w-3.5"/> TOTAL:{" "}
-                        {formatNumber(repoStats["SpotiDownloader"].totalDownloads)}
-                      </span>
-                      <span className="flex items-center gap-1 text-green-600 dark:text-green-400">
-                        <Download className="h-3.5 w-3.5"/> LATEST:{" "}
-                        {formatNumber(repoStats["SpotiDownloader"].latestDownloads)}
-                      </span>
-                    </div>
-                  </CardContent>)}
-              </Card>
               <Card className={projectCardClass} onClick={() => openExternal("https://github.com/afkarxyz/Twitter-X-Media-Batch-Downloader")}>
-                <CardHeader>
+                <CardHeader className={projectCardHeaderClass}>
                   <div className="flex justify-between items-start mb-2">
                     <img src={XBatchDLIcon} className="h-6 w-6 shrink-0" alt="Twitter/X Media Batch Downloader"/>
-                    <div className="flex items-center gap-2">
-                      {repoStats["Twitter-X-Media-Batch-Downloader"]?.latestReleaseAt && (<span className="text-[10px] text-muted-foreground whitespace-nowrap">
+                    <div className="ml-3 flex flex-wrap items-center justify-end gap-2">
+                      {repoStats["Twitter-X-Media-Batch-Downloader"]?.latestReleaseAt && (<span className={releaseMetaClass}>
                           {formatReleaseTimeAgo(repoStats["Twitter-X-Media-Batch-Downloader"].latestReleaseAt)}
                         </span>)}
-                      {repoStats["Twitter-X-Media-Batch-Downloader"]?.latestVersion && (<span className="text-[10px] bg-primary text-primary-foreground px-1.5 py-0.5 rounded-sm font-mono font-semibold max-w-[80px] truncate">
+                      {repoStats["Twitter-X-Media-Batch-Downloader"]?.latestVersion && (<span className={releaseVersionClass}>
                           {repoStats["Twitter-X-Media-Batch-Downloader"].latestVersion}
                         </span>)}
                     </div>
@@ -322,11 +270,11 @@ export function AboutPage() {
                   <CardTitle className="leading-tight">
                     Twitter/X Media Batch Downloader
                   </CardTitle>
-                  <CardDescription>
+                  <CardDescription className={projectBodyClass}>
                     {getRepoDescription("Twitter-X-Media-Batch-Downloader")}
                   </CardDescription>
                 </CardHeader>
-                {repoStats["Twitter-X-Media-Batch-Downloader"] && (<CardContent className="space-y-3">
+                {repoStats["Twitter-X-Media-Batch-Downloader"] && (<CardContent className={`${projectCardContentClass} space-y-2`}>
                     <div className="flex flex-wrap gap-2 text-xs">
                       {repoStats["Twitter-X-Media-Batch-Downloader"].languages?.map((lang: string) => (<span key={lang} className="px-2 py-0.5 rounded-full font-medium" style={{
                         backgroundColor: getLangColor(lang) + "20",
@@ -364,14 +312,14 @@ export function AboutPage() {
                     </div>
                   </CardContent>)}
               </Card>
-              <div className="flex flex-col gap-2 h-full">
+              <div className="flex h-full flex-col gap-1.5">
                 <Card className={`${projectCardClass} flex-1`} onClick={() => openExternal("https://exyezed.qzz.io/")}>
-                    <CardHeader>
-                    <CardTitle>Browser Extensions & Scripts</CardTitle>
-                    <CardDescription className="flex flex-col gap-2 pt-2">
-                      {browserExtensionItems.map((item) => (<div key={item.alt} className="flex items-center gap-2">
-                          <img src={item.icon} className="h-[22px] w-[22px] rounded-sm shadow-sm" alt={item.alt}/>
-                          <span className="text-[11px] leading-tight text-muted-foreground">
+                    <CardHeader className={projectCardHeaderClass}>
+                    <CardTitle className="leading-tight">Browser Extensions & Scripts</CardTitle>
+                    <CardDescription className="flex flex-col gap-2.5 pt-1.5">
+                      {browserExtensionItems.map((item) => (<div key={item.alt} className="flex items-center gap-2.5">
+                          <img src={item.icon} className="h-5.5 w-5.5 rounded-sm shadow-sm" alt={item.alt}/>
+                          <span className={`${projectBodyClass} text-muted-foreground`}>
                             {item.label}
                           </span>
                         </div>))}
@@ -379,12 +327,12 @@ export function AboutPage() {
                   </CardHeader>
                 </Card>
                 <Card className={`${projectCardClass} flex-1`} onClick={() => openExternal("https://spotubedl.com/")}>
-                  <CardHeader>
-                    <CardTitle className="flex items-center gap-2">
+                  <CardHeader className={projectCardHeaderClass}>
+                    <CardTitle className="flex items-center gap-2 leading-tight">
                       <img src={SpotubeDLIcon} className="h-5 w-5" alt="SpotubeDL"/>{" "}
                       SpotubeDL.com
                     </CardTitle>
-                    <CardDescription>
+                    <CardDescription className={projectBodyClass}>
                       Download Spotify Tracks, Albums, Playlists & Discography as MP3/OGG/Opus.
                     </CardDescription>
                   </CardHeader>

frontend/src/components/AlbumInfo.tsx

@@ -35,6 +35,7 @@ interface AlbumInfoProps {
     isDownloading: boolean;
     bulkDownloadType: "all" | "selected" | null;
     downloadProgress: number;
+    downloadRemainingCount: number;
     currentDownloadInfo: {
         name: string;
         artists: string;
@@ -77,7 +78,7 @@ interface AlbumInfoProps {
     onTrackClick?: (track: TrackMetadata) => void;
     onBack?: () => void;
 }
-export function AlbumInfo({ albumInfo, trackList, searchQuery, sortBy, selectedTracks, downloadedTracks, failedTracks, skippedTracks, downloadingTrack, isDownloading, bulkDownloadType, downloadProgress, currentDownloadInfo, currentPage, itemsPerPage, downloadedLyrics, failedLyrics, skippedLyrics, downloadingLyricsTrack, checkingAvailabilityTrack, availabilityMap, downloadedCovers, failedCovers, skippedCovers, downloadingCoverTrack, isBulkDownloadingCovers, isBulkDownloadingLyrics, isMetadataLoading = false, onSearchChange, onSortChange, onToggleTrack, onToggleSelectAll, onDownloadTrack, onDownloadLyrics, onDownloadCover, onCheckAvailability, onDownloadAllLyrics, onDownloadAllCovers, onDownloadAll, onDownloadSelected, onStopDownload, onOpenFolder, onPageChange, onArtistClick, onTrackClick, onBack, }: AlbumInfoProps) {
+export function AlbumInfo({ albumInfo, trackList, searchQuery, sortBy, selectedTracks, downloadedTracks, failedTracks, skippedTracks, downloadingTrack, isDownloading, bulkDownloadType, downloadProgress, downloadRemainingCount, currentDownloadInfo, currentPage, itemsPerPage, downloadedLyrics, failedLyrics, skippedLyrics, downloadingLyricsTrack, checkingAvailabilityTrack, availabilityMap, downloadedCovers, failedCovers, skippedCovers, downloadingCoverTrack, isBulkDownloadingCovers, isBulkDownloadingLyrics, isMetadataLoading = false, onSearchChange, onSortChange, onToggleTrack, onToggleSelectAll, onDownloadTrack, onDownloadLyrics, onDownloadCover, onCheckAvailability, onDownloadAllLyrics, onDownloadAllCovers, onDownloadAll, onDownloadSelected, onStopDownload, onOpenFolder, onPageChange, onArtistClick, onTrackClick, onBack, }: AlbumInfoProps) {
     const settings = getSettings();
     const albumArtistNames = splitArtistNames(albumInfo.artists);
     const artistSeparator = albumInfo.artists.includes(";") ? "; " : ", ";
@@ -270,7 +271,7 @@ export function AlbumInfo({ albumInfo, trackList, searchQuery, sortBy, selectedT
                     </TooltipContent>
                   </Tooltip>)}
               </div>
-              {isDownloading && (<DownloadProgress progress={downloadProgress} currentTrack={currentDownloadInfo} onStop={onStopDownload}/>)}
+              {isDownloading && (<DownloadProgress progress={downloadProgress} remainingCount={downloadRemainingCount} currentTrack={currentDownloadInfo} onStop={onStopDownload}/>)}
             </div>
           </div>
         </CardContent>

frontend/src/components/ApiStatusTab.tsx

@@ -1,34 +1,79 @@
 import { Button } from "@/components/ui/button";
-import { RefreshCw, CheckCircle2, XCircle, Loader2 } from "lucide-react";
-import { TidalIcon, QobuzIcon, AmazonIcon, LrclibIcon, MusicBrainzIcon } from "./PlatformIcons";
+import { SearchCheck, CheckCircle2, XCircle, Loader2 } from "lucide-react";
+import { TidalIcon, QobuzIcon, AmazonIcon, MusicBrainzIcon, AppleMusicIcon, DeezerIcon } from "./PlatformIcons";
 import { useApiStatus } from "@/hooks/useApiStatus";
+import { SPOTIFLAC_NEXT_SOURCES } from "@/lib/api-status";
+function renderStatusIcon(status: "checking" | "online" | "offline" | "idle") {
+    if (status === "online") {
+        return <CheckCircle2 className="h-5 w-5 text-emerald-500"/>;
+    }
+    if (status === "offline") {
+        return <XCircle className="h-5 w-5 text-destructive"/>;
+    }
+    return null;
+}
+function renderPlatformIcon(type: string) {
+    if (type === "tidal") {
+        return <TidalIcon className="w-5 h-5 shrink-0 text-muted-foreground"/>;
+    }
+    if (type === "amazon") {
+        return <AmazonIcon className="w-5 h-5 shrink-0 text-muted-foreground"/>;
+    }
+    if (type === "musicbrainz") {
+        return <MusicBrainzIcon className="w-5 h-5 shrink-0 text-muted-foreground"/>;
+    }
+    if (type === "deezer") {
+        return <DeezerIcon className="w-5 h-5 shrink-0 text-muted-foreground"/>;
+    }
+    if (type === "apple") {
+        return <AppleMusicIcon className="w-5 h-5 shrink-0 text-muted-foreground"/>;
+    }
+    return <QobuzIcon className="w-5 h-5 shrink-0 text-muted-foreground"/>;
+}
 export function ApiStatusTab() {
-    const { sources, statuses, isCheckingAll, refreshAll } = useApiStatus();
+    const { sources, statuses, nextStatuses, checkingSources, checkOne } = useApiStatus();
     return (<div className="space-y-6">
-      <div className="flex items-center justify-end">
-        <Button variant="outline" onClick={() => void refreshAll()} disabled={isCheckingAll} className="gap-2">
-          <RefreshCw className={`h-4 w-4 ${isCheckingAll ? "animate-spin" : ""}`}/>
-          Refresh All
-        </Button>
-      </div>
+      <div className="space-y-4">
+        <h3 className="text-sm font-semibold tracking-tight">SpotiFLAC Services</h3>
 
-      <div className="grid grid-cols-1 gap-4 sm:grid-cols-2 lg:grid-cols-3 xl:grid-cols-4">
+        <div className="grid grid-cols-1 gap-4 sm:grid-cols-2 lg:grid-cols-4">
           {sources.map((source) => {
             const status = statuses[source.id] || "idle";
-            return (<div key={source.id} className="flex items-center justify-between p-4 border rounded-lg bg-card text-card-foreground shadow-sm">
+            const isChecking = checkingSources[source.id] === true;
+            return (<div key={source.id} className="space-y-4 p-4 border rounded-lg bg-card text-card-foreground shadow-sm">
+                <div className="flex items-center justify-between gap-3">
                   <div className="flex items-center gap-3">
-                {source.type === "tidal" ? <TidalIcon className="w-5 h-5 shrink-0 text-muted-foreground"/> : source.type === "amazon" ? <AmazonIcon className="w-5 h-5 shrink-0 text-muted-foreground"/> : source.type === "lrclib" ? <LrclibIcon className="w-5 h-5 shrink-0 text-muted-foreground"/> : source.type === "musicbrainz" ? <MusicBrainzIcon className="w-5 h-5 shrink-0 text-muted-foreground"/> : <QobuzIcon className="w-5 h-5 shrink-0 text-muted-foreground"/>}
+                    {renderPlatformIcon(source.type)}
                     <p className="font-medium leading-none">{source.name}</p>
                   </div>
-              
-              <div className="flex items-center">
-                {status === "checking" && <Loader2 className="h-5 w-5 animate-spin text-muted-foreground"/>}
-                {status === "online" && <CheckCircle2 className="h-5 w-5 text-emerald-500"/>}
-                {status === "offline" && <XCircle className="h-5 w-5 text-destructive"/>}
-                {status === "idle" && <div className="h-5 w-5 rounded-full bg-muted"/>}
+                  <div className="flex items-center">{renderStatusIcon(status)}</div>
                 </div>
+                <Button variant="outline" size="sm" onClick={() => void checkOne(source.id)} disabled={isChecking} className="w-full gap-2">
+                  {isChecking ? <Loader2 className="h-4 w-4 animate-spin"/> : <SearchCheck className="h-4 w-4"/>}
+                  Check
+                </Button>
               </div>);
         })}
         </div>
+      </div>
+
+      <div className="border-t"/>
+
+      <div className="space-y-4">
+        <h3 className="text-sm font-semibold tracking-tight">SpotiFLAC Next Services</h3>
+
+        <div className="grid grid-cols-1 gap-4 sm:grid-cols-2 lg:grid-cols-4 xl:grid-cols-5">
+          {SPOTIFLAC_NEXT_SOURCES.map((source) => {
+            const status = nextStatuses[source.id] || "idle";
+            return (<div key={source.id} className="flex items-center justify-between p-4 border rounded-lg bg-card text-card-foreground shadow-sm">
+              <div className="flex items-center gap-3">
+                {renderPlatformIcon(source.id)}
+                <p className="font-medium leading-none">{source.name}</p>
+              </div>
+              <div className="flex items-center">{renderStatusIcon(status)}</div>
+            </div>);
+        })}
+        </div>
+      </div>
     </div>);
 }

frontend/src/components/ArtistInfo.tsx

@@ -48,6 +48,7 @@ interface ArtistInfoProps {
     isDownloading: boolean;
     bulkDownloadType: "all" | "selected" | null;
     downloadProgress: number;
+    downloadRemainingCount: number;
     currentDownloadInfo: {
         name: string;
         artists: string;
@@ -95,7 +96,7 @@ interface ArtistInfoProps {
     onTrackClick?: (track: TrackMetadata) => void;
     onBack?: () => void;
 }
-export function ArtistInfo({ artistInfo, albumList, trackList, searchQuery, sortBy, selectedTracks, downloadedTracks, failedTracks, skippedTracks, downloadingTrack, isDownloading, bulkDownloadType, downloadProgress, currentDownloadInfo, currentPage, itemsPerPage, downloadedLyrics, failedLyrics, skippedLyrics, downloadingLyricsTrack, checkingAvailabilityTrack, availabilityMap, downloadedCovers, failedCovers, skippedCovers, downloadingCoverTrack, isBulkDownloadingCovers, isBulkDownloadingLyrics, isMetadataLoading = false, onSearchChange, onSortChange, onToggleTrack, onToggleSelectAll, onDownloadTrack, onDownloadLyrics, onDownloadCover, onCheckAvailability, onDownloadAllLyrics, onDownloadAllCovers, onDownloadAll, onDownloadSelected, onStopDownload, onOpenFolder, onAlbumClick, onArtistClick, onPageChange, onTrackClick, onBack, }: ArtistInfoProps) {
+export function ArtistInfo({ artistInfo, albumList, trackList, searchQuery, sortBy, selectedTracks, downloadedTracks, failedTracks, skippedTracks, downloadingTrack, isDownloading, bulkDownloadType, downloadProgress, downloadRemainingCount, currentDownloadInfo, currentPage, itemsPerPage, downloadedLyrics, failedLyrics, skippedLyrics, downloadingLyricsTrack, checkingAvailabilityTrack, availabilityMap, downloadedCovers, failedCovers, skippedCovers, downloadingCoverTrack, isBulkDownloadingCovers, isBulkDownloadingLyrics, isMetadataLoading = false, onSearchChange, onSortChange, onToggleTrack, onToggleSelectAll, onDownloadTrack, onDownloadLyrics, onDownloadCover, onCheckAvailability, onDownloadAllLyrics, onDownloadAllCovers, onDownloadAll, onDownloadSelected, onStopDownload, onOpenFolder, onAlbumClick, onArtistClick, onPageChange, onTrackClick, onBack, }: ArtistInfoProps) {
     const [downloadingHeader, setDownloadingHeader] = useState(false);
     const [downloadingAvatar, setDownloadingAvatar] = useState(false);
     const [downloadingGalleryIndex, setDownloadingGalleryIndex] = useState<number | null>(null);
@@ -325,7 +326,7 @@ export function ArtistInfo({ artistInfo, albumList, trackList, searchQuery, sort
         {artistInfo.header ? (<>
             <div className="relative w-full h-64 bg-cover bg-center">
               <div className="absolute inset-0 bg-cover bg-center" style={{ backgroundImage: `url(${artistInfo.header})` }}/>
-              <div className="absolute inset-0 bg-gradient-to-t from-black via-black/50 to-transparent"/>
+              <div className="absolute inset-0 bg-linear-to-t from-black via-black/50 to-transparent"/>
               {onBack && (<div className="absolute top-4 right-4 z-10">
                   <Button variant="ghost" size="icon" onClick={onBack} className="text-white hover:bg-white/20 hover:text-white">
                       <XCircle className="h-5 w-5"/>
@@ -563,7 +564,7 @@ export function ArtistInfo({ artistInfo, albumList, trackList, searchQuery, sort
                           Filter Albums
                       </Button>
                   </DialogTrigger>
-                  <DialogContent className="sm:max-w-[500px] h-[80vh] flex flex-col">
+                  <DialogContent className="sm:max-w-125 h-[80vh] flex flex-col">
                       <DialogHeader>
                           <DialogTitle>Select Albums</DialogTitle>
                       </DialogHeader>
@@ -634,7 +635,7 @@ export function ArtistInfo({ artistInfo, albumList, trackList, searchQuery, sort
                 </Tooltip>)}
             </div>
           </div>
-          {isDownloading && (<DownloadProgress progress={downloadProgress} currentTrack={currentDownloadInfo} onStop={onStopDownload}/>)}
+          {isDownloading && (<DownloadProgress progress={downloadProgress} remainingCount={downloadRemainingCount} currentTrack={currentDownloadInfo} onStop={onStopDownload}/>)}
           <SearchAndSort searchQuery={searchQuery} sortBy={sortBy} onSearchChange={onSearchChange} onSortChange={onSortChange}/>
           <TrackList tracks={trackList} searchQuery={searchQuery} sortBy={sortBy} selectedTracks={selectedTracks} downloadedTracks={downloadedTracks} failedTracks={failedTracks} skippedTracks={skippedTracks} downloadingTrack={downloadingTrack} isDownloading={isDownloading} currentPage={currentPage} itemsPerPage={itemsPerPage} showCheckboxes={true} 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} onTrackClick={onTrackClick}/>
         </div>)}

frontend/src/components/DownloadProgress.tsx

@@ -3,14 +3,17 @@ import { Progress } from "@/components/ui/progress";
 import { StopCircle } from "lucide-react";
 interface DownloadProgressProps {
     progress: number;
+    remainingCount?: number;
     currentTrack: {
         name: string;
         artists: string;
     } | null;
     onStop: () => void;
 }
-export function DownloadProgress({ progress, currentTrack, onStop }: DownloadProgressProps) {
+export function DownloadProgress({ progress, remainingCount = 0, currentTrack, onStop }: DownloadProgressProps) {
     const clampedProgress = Math.min(100, Math.max(0, progress));
+    const safeRemainingCount = Math.max(0, remainingCount);
+    const remainingLabel = `${safeRemainingCount.toLocaleString()} ${safeRemainingCount === 1 ? "track" : "tracks"} left`;
     return (<div className="w-full space-y-2 mt-4">
       <div className="flex items-center gap-2">
         <Progress value={clampedProgress} className="h-2 flex-1"/>
@@ -20,7 +23,7 @@ export function DownloadProgress({ progress, currentTrack, onStop }: DownloadPro
         </Button>
       </div>
       <p className="text-xs text-muted-foreground">
-        {clampedProgress}% -{" "}
+        {clampedProgress}% • {remainingLabel} -{" "}
         {currentTrack
             ? `${currentTrack.name} - ${currentTrack.artists}`
             : "Preparing download..."}

frontend/src/components/HistoryPage.tsx

@@ -9,7 +9,8 @@ import { Pagination, PaginationContent, PaginationEllipsis, PaginationItem, Pagi
 import { GetDownloadHistory, ClearDownloadHistory, GetPreviewURL, GetFetchHistory, DeleteDownloadHistoryItem, DeleteFetchHistoryItem, ClearFetchHistoryByType } from "../../wailsjs/go/main/App";
 import { Tooltip, TooltipContent, TooltipProvider, TooltipTrigger } from "@/components/ui/tooltip";
 import { openExternal } from "@/lib/utils";
-import { SPOTIFY_PREVIEW_VOLUME } from "@/lib/preview";
+import { getPreviewVolume } from "@/lib/preview";
+import { createPreviewPlayback, type PreviewPlayback } from "@/lib/preview-player";
 import { TidalIcon, QobuzIcon, AmazonIcon } from "./PlatformIcons";
 const formatDate = (timestamp: number) => {
     const date = new Date(timestamp * 1000);
@@ -21,6 +22,37 @@ const formatDate = (timestamp: number) => {
     const seconds = String(date.getSeconds()).padStart(2, '0');
     return `${year}-${month}-${day} ${hours}:${minutes}:${seconds}`;
 };
+const getHistoryFormatLabel = (item: DownloadHistoryItem) => {
+    const normalizedPath = (item.path || "").trim().toLowerCase();
+    if (normalizedPath.endsWith(".flac"))
+        return "FLAC";
+    if (normalizedPath.endsWith(".mp3"))
+        return "MP3";
+    if (normalizedPath.endsWith(".m4a"))
+        return "M4A";
+    const normalizedFormat = (item.format || "").trim().toLowerCase();
+    switch (normalizedFormat) {
+        case "hi_res":
+        case "hi_res_lossless":
+        case "lossless":
+        case "flac":
+        case "6":
+        case "7":
+        case "27":
+            return "FLAC";
+        case "alac":
+        case "apple":
+        case "atmos":
+        case "m4a":
+        case "m4a-aac":
+        case "m4a-alac":
+            return "M4A";
+        case "mp3":
+            return "MP3";
+        default:
+            return (item.format || "-").toUpperCase();
+    }
+};
 interface DownloadHistoryItem {
     id: string;
     spotify_id: string;
@@ -57,7 +89,7 @@ export function HistoryPage({ onHistorySelect }: HistoryPageProps) {
     const [downloadSortBy, setDownloadSortBy] = useState("default");
     const [downloadCurrentPage, setDownloadCurrentPage] = useState(1);
     const [playingPreviewId, setPlayingPreviewId] = useState<string | null>(null);
-    const audioRef = useRef<HTMLAudioElement | null>(null);
+    const playbackRef = useRef<PreviewPlayback | null>(null);
     const [fetchHistory, setFetchHistory] = useState<FetchHistoryItem[]>([]);
     const [filteredFetchHistory, setFilteredFetchHistory] = useState<FetchHistoryItem[]>([]);
     const [activeFetchTab, setActiveFetchTab] = useState("track");
@@ -122,9 +154,8 @@ export function HistoryPage({ onHistorySelect }: HistoryPageProps) {
     }, [activeTab]);
     useEffect(() => {
         return () => {
-            if (audioRef.current) {
-                audioRef.current.pause();
-            }
+            playbackRef.current?.destroy();
+            playbackRef.current = null;
         };
     }, []);
     useEffect(() => {
@@ -180,20 +211,35 @@ export function HistoryPage({ onHistorySelect }: HistoryPageProps) {
     }, [fetchSearchQuery, activeFetchTab]);
     const handlePreview = async (id: string, spotifyId: string) => {
         if (playingPreviewId === id) {
-            audioRef.current?.pause();
+            playbackRef.current?.destroy();
+            playbackRef.current = null;
             setPlayingPreviewId(null);
             return;
         }
-        if (audioRef.current) {
-            audioRef.current.pause();
+        if (playbackRef.current) {
+            playbackRef.current.destroy();
+            playbackRef.current = null;
         }
         try {
             const url = await GetPreviewURL(spotifyId);
             if (url) {
-                const audio = new Audio(url);
-                audioRef.current = audio;
-                audio.volume = SPOTIFY_PREVIEW_VOLUME;
-                audio.onended = () => setPlayingPreviewId(null);
+                const playback = await createPreviewPlayback(url, getPreviewVolume());
+                const audio = playback.audio;
+                playbackRef.current = playback;
+                audio.onended = () => {
+                    setPlayingPreviewId(null);
+                    if (playbackRef.current?.audio === audio) {
+                        playbackRef.current.destroy();
+                        playbackRef.current = null;
+                    }
+                };
+                audio.onerror = () => {
+                    setPlayingPreviewId(null);
+                    if (playbackRef.current?.audio === audio) {
+                        playbackRef.current.destroy();
+                        playbackRef.current = null;
+                    }
+                };
                 audio.play();
                 setPlayingPreviewId(id);
             }
@@ -271,7 +317,7 @@ export function HistoryPage({ onHistorySelect }: HistoryPageProps) {
                             <Input placeholder="Search downloads..." value={downloadSearchQuery} onChange={(e) => setDownloadSearchQuery(e.target.value)} className="pl-8 h-9"/>
                         </div>
                         <Select value={downloadSortBy} onValueChange={setDownloadSortBy}>
-                            <SelectTrigger className="w-[180px] h-9">
+                            <SelectTrigger className="w-45 h-9">
                                 <ArrowUpDown className="mr-2 h-4 w-4"/>
                                 <SelectValue placeholder="Sort by"/>
                             </SelectTrigger>
@@ -332,7 +378,7 @@ export function HistoryPage({ onHistorySelect }: HistoryPageProps) {
                                         <td className="p-3 align-middle text-left hidden lg:table-cell">
                                             <div className="flex flex-col items-start gap-1">
                                                 <span className="text-xs font-bold text-foreground">
-                                                    {['HI_RES_LOSSLESS', 'LOSSLESS', 'flac', '6', '7', '27'].includes(item.format?.toLowerCase() || '') ? 'FLAC' : item.format?.toUpperCase()}
+                                                    {getHistoryFormatLabel(item)}
                                                 </span>
                                                 {item.quality && <span className="text-[11px] text-muted-foreground leading-none whitespace-nowrap">{item.quality}</span>}
                                             </div>

frontend/src/components/PlatformIcons.tsx

@@ -1,4 +1,6 @@
 import amazonMusicIcon from "../assets/icons/amzn.png";
+import appleMusicIcon from "../assets/icons/am.png";
+import deezerIcon from "../assets/icons/dzr.png";
 import lrclibIcon from "../assets/icons/lrclib.png";
 import musicBrainzDarkIcon from "../assets/icons/musicbrainz_d.png";
 import musicBrainzLightIcon from "../assets/icons/musicbrainz_l.png";
@@ -81,6 +83,12 @@ export function QobuzIcon({ className = "w-4 h-4" }: PlatformIconProps) {
 export function AmazonIcon({ className = "w-4 h-4" }: PlatformIconProps) {
     return <PlatformIcon src={amazonMusicIcon} alt="Amazon Music" className={className} defaultClassName="rounded-[4px]"/>;
 }
+export function AppleMusicIcon({ className = "w-4 h-4" }: PlatformIconProps) {
+    return <PlatformIcon src={appleMusicIcon} alt="Apple Music" className={className} defaultClassName="rounded-[4px]"/>;
+}
+export function DeezerIcon({ className = "w-4 h-4" }: PlatformIconProps) {
+    return <PlatformIcon src={deezerIcon} alt="Deezer" className={className} defaultClassName="rounded-[4px]"/>;
+}
 export function LrclibIcon({ className = "w-4 h-4" }: PlatformIconProps) {
     return <PlatformIcon src={lrclibIcon} alt="LRCLIB" className={className}/>;
 }

frontend/src/components/PlaylistInfo.tsx

@@ -41,6 +41,7 @@ interface PlaylistInfoProps {
     isDownloading: boolean;
     bulkDownloadType: "all" | "selected" | null;
     downloadProgress: number;
+    downloadRemainingCount: number;
     currentDownloadInfo: {
         name: string;
         artists: string;
@@ -88,7 +89,7 @@ interface PlaylistInfoProps {
     onTrackClick: (track: TrackMetadata) => void;
     onBack?: () => void;
 }
-export function PlaylistInfo({ playlistInfo, trackList, searchQuery, sortBy, selectedTracks, downloadedTracks, failedTracks, skippedTracks, downloadingTrack, isDownloading, bulkDownloadType, downloadProgress, currentDownloadInfo, currentPage, itemsPerPage, downloadedLyrics, failedLyrics, skippedLyrics, downloadingLyricsTrack, checkingAvailabilityTrack, availabilityMap, downloadedCovers, failedCovers, skippedCovers, downloadingCoverTrack, isBulkDownloadingCovers, isBulkDownloadingLyrics, isMetadataLoading = false, onSearchChange, onSortChange, onToggleTrack, onToggleSelectAll, onDownloadTrack, onDownloadLyrics, onDownloadCover, onCheckAvailability, onDownloadAllLyrics, onDownloadAllCovers, onDownloadAll, onDownloadSelected, onStopDownload, onOpenFolder, onPageChange, onAlbumClick, onArtistClick, onTrackClick, onBack, }: PlaylistInfoProps) {
+export function PlaylistInfo({ playlistInfo, trackList, searchQuery, sortBy, selectedTracks, downloadedTracks, failedTracks, skippedTracks, downloadingTrack, isDownloading, bulkDownloadType, downloadProgress, downloadRemainingCount, currentDownloadInfo, currentPage, itemsPerPage, downloadedLyrics, failedLyrics, skippedLyrics, downloadingLyricsTrack, checkingAvailabilityTrack, availabilityMap, downloadedCovers, failedCovers, skippedCovers, downloadingCoverTrack, isBulkDownloadingCovers, isBulkDownloadingLyrics, isMetadataLoading = false, onSearchChange, onSortChange, onToggleTrack, onToggleSelectAll, onDownloadTrack, onDownloadLyrics, onDownloadCover, onCheckAvailability, onDownloadAllLyrics, onDownloadAllCovers, onDownloadAll, onDownloadSelected, onStopDownload, onOpenFolder, onPageChange, onAlbumClick, onArtistClick, onTrackClick, onBack, }: PlaylistInfoProps) {
     const settings = getSettings();
     const playlistName = playlistInfo.owner.name;
     const playlistFolderName = buildPlaylistFolderName(playlistName, playlistInfo.owner.display_name, settings.playlistOwnerFolderName);
@@ -235,7 +236,7 @@ export function PlaylistInfo({ playlistInfo, trackList, searchQuery, sortBy, sel
                     </TooltipContent>
                   </Tooltip>)}
               </div>
-              {isDownloading && (<DownloadProgress progress={downloadProgress} currentTrack={currentDownloadInfo} onStop={onStopDownload}/>)}
+              {isDownloading && (<DownloadProgress progress={downloadProgress} remainingCount={downloadRemainingCount} currentTrack={currentDownloadInfo} onStop={onStopDownload}/>)}
             </div>
           </div>
         </CardContent>

frontend/src/components/SettingsPage.tsx

@@ -1,28 +1,37 @@
 import { useState, useEffect, useCallback } from "react";
 import { flushSync } from "react-dom";
 import { Button } from "@/components/ui/button";
+import { Input } from "@/components/ui/input";
 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 { Tooltip, TooltipContent, TooltipTrigger, } from "@/components/ui/tooltip";
-import { FolderOpen, Save, RotateCcw, Info, ArrowRight, MonitorCog, FolderCog, Router, FolderLock } from "lucide-react";
+import { FolderOpen, Save, RotateCcw, Info, ArrowRight, MonitorCog, FolderCog, Router, FolderLock, Plus, Trash2, ExternalLink } from "lucide-react";
 import { Dialog, DialogContent, DialogDescription, DialogFooter, DialogHeader, DialogTitle, } from "@/components/ui/dialog";
 import { Switch } from "@/components/ui/switch";
-import { getSettings, getSettingsWithDefaults, saveSettings, resetToDefaultSettings, applyThemeMode, applyFont, FONT_OPTIONS, FOLDER_PRESETS, FILENAME_PRESETS, TEMPLATE_VARIABLES, type Settings as SettingsType, type FontFamily, type FolderPreset, type FilenamePreset, } from "@/lib/settings";
+import { getSettings, getSettingsWithDefaults, saveSettings, resetToDefaultSettings, applyThemeMode, applyFont, getFontOptions, parseGoogleFontUrl, loadGoogleFontUrl, loadCustomFonts, saveCustomFonts, FOLDER_PRESETS, FILENAME_PRESETS, TEMPLATE_VARIABLES, type Settings as SettingsType, type FontFamily, type CustomFontFamily, type FolderPreset, type FilenamePreset, type ExistingFileCheckMode, } from "@/lib/settings";
 import { themes, applyTheme } from "@/lib/themes";
-import { SelectFolder, OpenConfigFolder } from "../../wailsjs/go/main/App";
+import { SelectFolder, OpenConfigFolder, CheckCustomTidalAPI } from "../../wailsjs/go/main/App";
 import { toastWithSound as toast } from "@/lib/toast-with-sound";
+import { openExternal } from "@/lib/utils";
 import { ApiStatusTab } from "./ApiStatusTab";
 import { AmazonIcon, QobuzIcon, SonglinkIcon, SongstatsIcon, TidalIcon } from "./PlatformIcons";
 interface SettingsPageProps {
     onUnsavedChangesChange?: (hasUnsavedChanges: boolean) => void;
     onResetRequest?: (resetFn: () => void) => void;
 }
+type CustomTidalApiStatus = "idle" | "checking" | "online" | "offline";
 export function SettingsPage({ onUnsavedChangesChange, onResetRequest, }: SettingsPageProps) {
     const [savedSettings, setSavedSettings] = useState<SettingsType>(getSettings());
     const [tempSettings, setTempSettings] = useState<SettingsType>(savedSettings);
     const [isDark, setIsDark] = useState(document.documentElement.classList.contains("dark"));
     const [showResetConfirm, setShowResetConfirm] = useState(false);
+    const [showAddFontDialog, setShowAddFontDialog] = useState(false);
+    const [showCustomTidalApiDialog, setShowCustomTidalApiDialog] = useState(false);
+    const [addFontUrl, setAddFontUrl] = useState("");
+    const [customTidalApiStatus, setCustomTidalApiStatus] = useState<CustomTidalApiStatus>("idle");
+    const parsedAddFont = parseGoogleFontUrl(addFontUrl);
+    const fontOptions = getFontOptions(tempSettings.customFonts);
     const hasUnsavedChanges = JSON.stringify(savedSettings) !== JSON.stringify(tempSettings);
     const resetToSaved = useCallback(() => {
         const freshSavedSettings = getSettings();
@@ -55,14 +64,20 @@ export function SettingsPage({ onUnsavedChangesChange, onResetRequest, }: Settin
     useEffect(() => {
         applyThemeMode(tempSettings.themeMode);
         applyTheme(tempSettings.theme);
-        applyFont(tempSettings.fontFamily);
+        applyFont(tempSettings.fontFamily, tempSettings.customFonts);
         setTimeout(() => {
             setIsDark(document.documentElement.classList.contains("dark"));
         }, 0);
-    }, [tempSettings.themeMode, tempSettings.theme, tempSettings.fontFamily]);
+    }, [tempSettings.themeMode, tempSettings.theme, tempSettings.fontFamily, tempSettings.customFonts]);
+    useEffect(() => {
+        if (showAddFontDialog && parsedAddFont) {
+            loadGoogleFontUrl(parsedAddFont.url, "spotiflac-add-font-preview");
+        }
+    }, [showAddFontDialog, parsedAddFont]);
     useEffect(() => {
         const loadDefaults = async () => {
-            if (!savedSettings.downloadPath) {
+            const currentSettings = getSettings();
+            if (!currentSettings.downloadPath) {
                 const settingsWithDefaults = await getSettingsWithDefaults();
                 setSavedSettings(settingsWithDefaults);
                 setTempSettings(settingsWithDefaults);
@@ -71,6 +86,14 @@ export function SettingsPage({ onUnsavedChangesChange, onResetRequest, }: Settin
         };
         loadDefaults();
     }, []);
+    useEffect(() => {
+        const syncCustomFonts = async () => {
+            const customFonts = await loadCustomFonts();
+            setSavedSettings((prev) => ({ ...prev, customFonts }));
+            setTempSettings((prev) => ({ ...prev, customFonts }));
+        };
+        void syncCustomFonts();
+    }, []);
     const handleSave = async () => {
         await saveSettings(tempSettings);
         setSavedSettings(tempSettings);
@@ -83,7 +106,7 @@ export function SettingsPage({ onUnsavedChangesChange, onResetRequest, }: Settin
         setSavedSettings(defaultSettings);
         applyThemeMode(defaultSettings.themeMode);
         applyTheme(defaultSettings.theme);
-        applyFont(defaultSettings.fontFamily);
+        applyFont(defaultSettings.fontFamily, defaultSettings.customFonts);
         setShowResetConfirm(false);
         toast.success("Settings reset to default");
     };
@@ -99,6 +122,51 @@ export function SettingsPage({ onUnsavedChangesChange, onResetRequest, }: Settin
             toast.error(`Error selecting folder: ${error}`);
         }
     };
+    const closeAddFontDialog = () => {
+        setShowAddFontDialog(false);
+        setAddFontUrl("");
+    };
+    const handleAddFont = async () => {
+        if (!parsedAddFont) {
+            toast.error("Enter a valid Google Fonts URL");
+            return;
+        }
+        const existingFonts = tempSettings.customFonts || [];
+        const existingIndex = existingFonts.findIndex((font) => font.value === parsedAddFont.value || font.url === parsedAddFont.url);
+        const customFonts = existingIndex >= 0
+            ? existingFonts.map((font, index) => index === existingIndex ? parsedAddFont : font)
+            : [...existingFonts, parsedAddFont];
+        const savedCustomFonts = await saveCustomFonts(customFonts);
+        setSavedSettings((prev) => ({ ...prev, customFonts: savedCustomFonts }));
+        setTempSettings((prev) => ({
+            ...prev,
+            customFonts: savedCustomFonts,
+            fontFamily: parsedAddFont.value,
+        }));
+        closeAddFontDialog();
+        toast.success(`${parsedAddFont.label} added`);
+    };
+    const handleDeleteCustomFont = async (fontValue: CustomFontFamily) => {
+        const customFonts = (tempSettings.customFonts || []).filter((font) => font.value !== fontValue);
+        const savedCustomFonts = await saveCustomFonts(customFonts);
+        const shouldResetSavedFont = savedSettings.fontFamily === fontValue;
+        const shouldResetTempFont = tempSettings.fontFamily === fontValue;
+        const nextSavedSettings: SettingsType = {
+            ...savedSettings,
+            customFonts: savedCustomFonts,
+            fontFamily: shouldResetSavedFont ? "google-sans" : savedSettings.fontFamily,
+        };
+        setSavedSettings(nextSavedSettings);
+        setTempSettings((prev) => ({
+            ...prev,
+            customFonts: savedCustomFonts,
+            fontFamily: shouldResetTempFont ? "google-sans" : prev.fontFamily,
+        }));
+        if (shouldResetSavedFont) {
+            await saveSettings(nextSavedSettings);
+        }
+        toast.success("Font deleted");
+    };
     const handleTidalQualityChange = async (value: "LOSSLESS" | "HI_RES_LOSSLESS") => {
         setTempSettings((prev) => ({ ...prev, tidalQuality: value }));
     };
@@ -108,6 +176,46 @@ export function SettingsPage({ onUnsavedChangesChange, onResetRequest, }: Settin
     const handleAutoQualityChange = async (value: "16" | "24") => {
         setTempSettings((prev) => ({ ...prev, autoQuality: value }));
     };
+    const persistCustomTidalApi = useCallback(async (nextValue: string) => {
+        const normalizedValue = nextValue.trim().replace(/\/+$/g, "");
+        const persistedSettings = getSettings();
+        const nextSavedSettings: SettingsType = {
+            ...persistedSettings,
+            customTidalApi: normalizedValue,
+        };
+        await saveSettings(nextSavedSettings);
+        setSavedSettings((prev) => ({
+            ...prev,
+            customTidalApi: normalizedValue,
+        }));
+        setTempSettings((prev) => ({
+            ...prev,
+            customTidalApi: normalizedValue,
+        }));
+    }, []);
+    const handleCheckCustomTidalApi = async () => {
+        const normalizedCustomTidalApi = (tempSettings.customTidalApi || "").trim().replace(/\/+$/g, "");
+        if (!normalizedCustomTidalApi.startsWith("https://")) {
+            toast.error("Enter a valid HTTPS HiFi API URL");
+            return;
+        }
+        setCustomTidalApiStatus("checking");
+        try {
+            const isOnline = await CheckCustomTidalAPI(normalizedCustomTidalApi);
+            setCustomTidalApiStatus(isOnline ? "online" : "offline");
+            if (isOnline) {
+                toast.success("HiFi API instance is online");
+            }
+            else {
+                toast.error("HiFi API instance is offline");
+            }
+        }
+        catch (error) {
+            console.error("Failed to check custom Tidal API:", error);
+            setCustomTidalApiStatus("offline");
+            toast.error(`Failed to check HiFi API instance: ${error}`);
+        }
+    };
     const [activeTab, setActiveTab] = useState<"general" | "files" | "api">("general");
     return (<div className="space-y-4 h-full flex flex-col">
       <div className="flex items-center justify-between shrink-0">
@@ -204,18 +312,39 @@ export function SettingsPage({ onUnsavedChangesChange, onResetRequest, }: Settin
 
               <div className="space-y-2">
                 <Label htmlFor="font">Font</Label>
+                <div className="flex flex-wrap items-center gap-2">
                   <Select value={tempSettings.fontFamily} onValueChange={(value: FontFamily) => setTempSettings((prev) => ({ ...prev, fontFamily: value }))}>
-                  <SelectTrigger id="font">
+                    <SelectTrigger id="font" className="max-w-full min-w-40">
                       <SelectValue placeholder="Select a font"/>
                     </SelectTrigger>
                     <SelectContent>
-                    {FONT_OPTIONS.map((font) => (<SelectItem key={font.value} value={font.value}>
+                      {fontOptions.map((font) => {
+                const isCustomFont = font.value.startsWith("custom-");
+                return (<SelectItem key={font.value} value={font.value} indicatorPosition="inline" trailingAction={isCustomFont ? (<Button type="button" variant="ghost" size="icon" className="h-8 w-8 cursor-pointer text-muted-foreground hover:bg-transparent hover:text-destructive" aria-label={`Delete ${font.label}`} onPointerDown={(event) => {
+                            event.preventDefault();
+                            event.stopPropagation();
+                        }} onPointerUp={(event) => {
+                            event.preventDefault();
+                            event.stopPropagation();
+                        }} onClick={(event) => {
+                            event.preventDefault();
+                            event.stopPropagation();
+                            void handleDeleteCustomFont(font.value as CustomFontFamily);
+                        }}>
+                              <Trash2 className="h-3.5 w-3.5 text-inherit"/>
+                            </Button>) : undefined}>
                           <span style={{ fontFamily: font.fontFamily }}>
                             {font.label}
                           </span>
-                      </SelectItem>))}
+                        </SelectItem>);
+            })}
                     </SelectContent>
                   </Select>
+                  <Button type="button" variant="outline" onClick={() => setShowAddFontDialog(true)} className="shrink-0 gap-1.5">
+                    <Plus className="h-4 w-4"/>
+                    Add Font
+                  </Button>
+                </div>
               </div>
 
               <div className="flex items-center gap-3 pt-2">
@@ -237,7 +366,7 @@ export function SettingsPage({ onUnsavedChangesChange, onResetRequest, }: Settin
                 ...prev,
                 linkResolver: value,
             }))}>
-                    <SelectTrigger id="link-resolver" className="h-9 w-fit min-w-[140px]">
+                    <SelectTrigger id="link-resolver" className="h-9 w-fit min-w-35">
                       <SelectValue placeholder="Select a link resolver"/>
                     </SelectTrigger>
                     <SelectContent>
@@ -270,8 +399,8 @@ export function SettingsPage({ onUnsavedChangesChange, onResetRequest, }: Settin
 
               <div className="space-y-2">
                 <Label htmlFor="downloader">Source</Label>
-                <div className="flex gap-2 flex-wrap">
-                  <Select value={tempSettings.downloader} onValueChange={(value: any) => setTempSettings((prev) => ({
+                <div className="flex items-center gap-3 flex-wrap">
+                  <Select value={tempSettings.downloader} onValueChange={(value: SettingsType["downloader"]) => setTempSettings((prev) => ({
                 ...prev,
                 downloader: value,
             }))}>
@@ -303,11 +432,11 @@ export function SettingsPage({ onUnsavedChangesChange, onResetRequest, }: Settin
                   </Select>
 
                   {tempSettings.downloader === "auto" && (<>
-                      <Select value={tempSettings.autoOrder || "tidal-qobuz-amazon"} onValueChange={(value: any) => setTempSettings((prev) => ({
+                      <Select value={tempSettings.autoOrder || "tidal-qobuz-amazon"} onValueChange={(value: string) => setTempSettings((prev) => ({
                     ...prev,
                     autoOrder: value,
                 }))}>
-                        <SelectTrigger className="h-9 w-fit min-w-[140px]">
+                        <SelectTrigger className="h-9 w-fit min-w-35">
                           <SelectValue />
                         </SelectTrigger>
                         <SelectContent>
@@ -458,7 +587,6 @@ export function SettingsPage({ onUnsavedChangesChange, onResetRequest, }: Settin
                     tempSettings.qobuzQuality === "27") ||
                 (tempSettings.downloader === "auto" &&
                     tempSettings.autoQuality === "24")) && (<div className="flex items-center gap-3 pt-2">
-                    <div className="flex items-center gap-3">
                       <Switch id="allow-fallback" checked={tempSettings.allowFallback} onCheckedChange={(checked) => setTempSettings((prev) => ({
                     ...prev,
                     allowFallback: checked,
@@ -466,22 +594,25 @@ export function SettingsPage({ onUnsavedChangesChange, onResetRequest, }: Settin
                       <Label htmlFor="allow-fallback" className="text-sm font-normal cursor-pointer">
                         Allow Quality Fallback (16-bit)
                       </Label>
+                  </div>)}
+
+                {(tempSettings.downloader === "auto" || tempSettings.downloader === "tidal") && (<div className="space-y-2 pt-2">
+                    <Label>Custom Instance</Label>
+                    <div className="flex items-center gap-2">
+                      <Button type="button" variant="outline" onClick={() => setShowCustomTidalApiDialog(true)} className="gap-2">
+                        <TidalIcon />
+                        Configure
+                      </Button>
+                      {tempSettings.customTidalApi && (<span className="max-w-[260px] truncate text-xs text-muted-foreground" title={tempSettings.customTidalApi}>
+                          {tempSettings.customTidalApi}
+                        </span>)}
                     </div>
                   </div>)}
               </div>
 
-              <div className="border-t pt-6"/>
+              <div className="border-t pt-2"/>
 
               <div className="space-y-4">
-                <div className="flex items-center gap-3">
-                  <Switch id="embed-lyrics" checked={tempSettings.embedLyrics} onCheckedChange={(checked) => setTempSettings((prev) => ({
-                ...prev,
-                embedLyrics: checked,
-            }))}/>
-                  <Label htmlFor="embed-lyrics" className="cursor-pointer text-sm font-normal">
-                    Embed Lyrics
-                  </Label>
-                </div>
                 <div className="flex items-center gap-3">
                   <Switch id="embed-max-quality-cover" checked={tempSettings.embedMaxQualityCover} onCheckedChange={(checked) => setTempSettings((prev) => ({
                 ...prev,
@@ -509,6 +640,15 @@ export function SettingsPage({ onUnsavedChangesChange, onResetRequest, }: Settin
                       Use Single Genre
                     </Label>
                   </div>)}
+                <div className="flex items-center gap-3">
+                  <Switch id="embed-lyrics" checked={tempSettings.embedLyrics} onCheckedChange={(checked) => setTempSettings((prev) => ({
+                ...prev,
+                embedLyrics: checked,
+            }))}/>
+                  <Label htmlFor="embed-lyrics" className="cursor-pointer text-sm font-normal">
+                    Embed Lyrics
+                  </Label>
+                </div>
               </div>
             </div>
           </div>)}
@@ -626,6 +766,23 @@ export function SettingsPage({ onUnsavedChangesChange, onResetRequest, }: Settin
 
             </div>
 
+            <div className="space-y-4">
+              <div className="space-y-2">
+                <Label htmlFor="existing-file-check-mode">Existing File Check</Label>
+                <Select value={tempSettings.existingFileCheckMode} onValueChange={(value: ExistingFileCheckMode) => setTempSettings((prev) => ({
+                ...prev,
+                existingFileCheckMode: value,
+            }))}>
+                  <SelectTrigger id="existing-file-check-mode">
+                    <SelectValue placeholder="Select existing file check mode"/>
+                  </SelectTrigger>
+                  <SelectContent>
+                    <SelectItem value="filename">Filename</SelectItem>
+                    <SelectItem value="isrc">ISRC</SelectItem>
+                  </SelectContent>
+                </Select>
+              </div>
+
               <div className="space-y-2">
               <div className="flex items-center gap-2">
                 <Label className="text-sm">Filename Format</Label>
@@ -700,20 +857,119 @@ export function SettingsPage({ onUnsavedChangesChange, onResetRequest, }: Settin
                     .flac
                   </span>
                 </p>)}
-                
+              </div>
             </div>
           </div>)}
         
         {activeTab === "api" && (<ApiStatusTab />)}
       </div>
 
+      <Dialog open={showAddFontDialog} onOpenChange={(open) => open ? setShowAddFontDialog(true) : closeAddFontDialog()}>
+        <DialogContent className="sm:max-w-115 [&>button]:hidden">
+          <DialogHeader>
+            <div className="flex items-center justify-between gap-3">
+              <DialogTitle>Add Font</DialogTitle>
+              <button type="button" onClick={() => openExternal("https://fonts.google.com")} className="inline-flex cursor-pointer items-center gap-1 text-xs text-muted-foreground hover:text-foreground hover:underline">
+                Open Google Fonts
+                <ExternalLink className="h-3 w-3"/>
+              </button>
+            </div>
+            <DialogDescription />
+          </DialogHeader>
+          <div className="space-y-4">
+            <div className="space-y-2">
+              <Label htmlFor="google-font-url">Google Font URL</Label>
+              <Input id="google-font-url" value={addFontUrl} onChange={(event) => setAddFontUrl(event.target.value)} onKeyDown={(event) => {
+            if (event.key === "Enter" && parsedAddFont) {
+                void handleAddFont();
+            }
+        }} placeholder="https://fonts.google.com/specimen/Ubuntu" autoFocus/>
+              {addFontUrl.trim() && !parsedAddFont && (<p className="text-xs text-destructive">
+                  Enter a valid Google Fonts URL.
+                </p>)}
+            </div>
+            <div className="rounded-md border bg-muted/20 p-4">
+              <p className="mb-2 text-xs font-medium text-muted-foreground">
+                Preview
+              </p>
+              <p className="text-2xl font-semibold leading-tight" style={{ fontFamily: parsedAddFont?.fontFamily }}>
+                Aa The quick brown fox
+              </p>
+              <p className="mt-2 text-sm text-muted-foreground" style={{ fontFamily: parsedAddFont?.fontFamily }}>
+                Kendrick Lamar - All The Stars
+              </p>
+            </div>
+          </div>
+          <DialogFooter>
+            <Button variant="outline" onClick={closeAddFontDialog}>
+              Cancel
+            </Button>
+            <Button onClick={() => void handleAddFont()} disabled={!parsedAddFont}>
+              Add
+            </Button>
+          </DialogFooter>
+        </DialogContent>
+      </Dialog>
+
+      <Dialog open={showCustomTidalApiDialog} onOpenChange={setShowCustomTidalApiDialog}>
+        <DialogContent className="sm:max-w-md [&>button]:hidden">
+          <DialogHeader>
+            <div className="flex items-center justify-between gap-3">
+              <DialogTitle>Custom Instance</DialogTitle>
+              <button type="button" onClick={() => openExternal("https://github.com/binimum/hifi-api")} className="inline-flex cursor-pointer items-center gap-1 text-xs text-muted-foreground hover:text-foreground hover:underline">
+                How to create your own instance
+                <ExternalLink className="h-3 w-3"/>
+              </button>
+            </div>
+            <DialogDescription />
+          </DialogHeader>
+          <div className="space-y-4">
+            <div className="space-y-2">
+              <Label htmlFor="custom-tidal-api">Instance URL</Label>
+              <div className="flex gap-2">
+                <Input id="custom-tidal-api" type="url" value={tempSettings.customTidalApi || ""} onChange={(e) => {
+            const nextValue = e.target.value.replace(/\/+$/g, "");
+            setCustomTidalApiStatus("idle");
+            void persistCustomTidalApi(nextValue);
+        }} placeholder="https://your-hifi-api.example"/>
+                <Button type="button" variant="outline" onClick={() => void handleCheckCustomTidalApi()} disabled={!((tempSettings.customTidalApi || "").trim().startsWith("https://")) || customTidalApiStatus === "checking"}>
+                  {customTidalApiStatus === "checking" ? "Checking..." : "Check"}
+                </Button>
+                {tempSettings.customTidalApi && (<Button type="button" variant="outline" size="icon" onClick={() => {
+                setCustomTidalApiStatus("idle");
+                void persistCustomTidalApi("");
+            }}>
+                    <Trash2 className="h-4 w-4 text-destructive"/>
+                  </Button>)}
+              </div>
+            </div>
+            {customTidalApiStatus !== "idle" && (<p className={`text-xs ${customTidalApiStatus === "online"
+                ? "text-green-600 dark:text-green-400"
+                : customTidalApiStatus === "offline"
+                    ? "text-destructive"
+                    : "text-muted-foreground"}`}>
+                {customTidalApiStatus === "online"
+                ? "Custom HiFi API instance is online."
+                : customTidalApiStatus === "offline"
+                    ? "Custom HiFi API instance is offline or returned preview-only data."
+                    : "Checking custom HiFi API instance..."}
+              </p>)}
+          </div>
+          <DialogFooter>
+            <Button variant="outline" onClick={() => setShowCustomTidalApiDialog(false)}>
+              Close
+            </Button>
+          </DialogFooter>
+        </DialogContent>
+      </Dialog>
+
       <Dialog open={showResetConfirm} onOpenChange={setShowResetConfirm}>
         <DialogContent className="max-w-md [&>button]:hidden">
           <DialogHeader>
             <DialogTitle>Reset to Default?</DialogTitle>
             <DialogDescription>
               This will reset all settings to their default values. Your custom
-              configurations will be lost.
+              font list will be kept.
             </DialogDescription>
           </DialogHeader>
           <DialogFooter>

frontend/src/components/TitleBar.tsx

@@ -1,6 +1,9 @@
 import { X, Minus, Maximize, SlidersHorizontal, Globe, Eye, EyeOff } from "lucide-react";
 import { WindowMinimise, WindowToggleMaximise, Quit } from "../../wailsjs/runtime/runtime";
 import { Menubar, MenubarContent, MenubarMenu, MenubarItem, MenubarTrigger, MenubarLabel, MenubarSeparator } from "@/components/ui/menubar";
+import { Slider } from "@/components/ui/slider";
+import { getSettings, updateSettings } from "@/lib/settings";
+import { PREVIEW_VOLUME_CHANGED_EVENT } from "@/lib/preview";
 import { fetchCurrentIPInfo } from "@/lib/api";
 import type { CurrentIPInfo } from "@/types/api";
 import { openExternal } from "@/lib/utils";
@@ -24,7 +27,12 @@ const SPOTIFY_BLOCKED_COUNTRY_CODES = new Set([
     "TM",
     "YE",
 ]);
+interface SettingsUpdatedDetail {
+    previewVolume?: number;
+}
 export function TitleBar() {
+    const initialSettings = getSettings();
+    const [previewVolume, setPreviewVolume] = useState(initialSettings.previewVolume ?? 100);
     const [currentIPInfo, setCurrentIPInfo] = useState<CurrentIPInfo | null>(null);
     const [isLoadingCurrentIPInfo, setIsLoadingCurrentIPInfo] = useState(false);
     const [currentIPInfoError, setCurrentIPInfoError] = useState("");
@@ -33,6 +41,16 @@ export function TitleBar() {
     useEffect(() => {
         currentIPInfoRef.current = currentIPInfo;
     }, [currentIPInfo]);
+    useEffect(() => {
+        const handleSettingsUpdate = (event: Event) => {
+            const updatedSettings = (event as CustomEvent<SettingsUpdatedDetail>).detail;
+            if (updatedSettings && typeof updatedSettings.previewVolume === "number") {
+                setPreviewVolume(updatedSettings.previewVolume);
+            }
+        };
+        window.addEventListener("settingsUpdated", handleSettingsUpdate);
+        return () => window.removeEventListener("settingsUpdated", handleSettingsUpdate);
+    }, []);
     const loadCurrentIPInfo = async (options?: {
         silent?: boolean;
     }) => {
@@ -88,6 +106,22 @@ export function TitleBar() {
     const handleClose = () => {
         Quit();
     };
+    const handlePreviewVolumeChange = (value: number[]) => {
+        const nextValue = value[0];
+        if (typeof nextValue !== "number" || Number.isNaN(nextValue)) {
+            return;
+        }
+        setPreviewVolume(nextValue);
+        window.dispatchEvent(new CustomEvent(PREVIEW_VOLUME_CHANGED_EVENT, { detail: nextValue }));
+    };
+    const handlePreviewVolumeCommit = (value: number[]) => {
+        const nextValue = value[0];
+        if (typeof nextValue !== "number" || Number.isNaN(nextValue)) {
+            return;
+        }
+        setPreviewVolume(nextValue);
+        void updateSettings({ previewVolume: nextValue });
+    };
     const detectedCountryCode = currentIPInfo?.country_code?.toUpperCase() || "";
     const detectedFlagPath = detectedCountryCode ? `/assets/flags/${detectedCountryCode.toLowerCase()}.svg` : "";
     const isSpotifyBlockedCountry = detectedCountryCode !== "" && SPOTIFY_BLOCKED_COUNTRY_CODES.has(detectedCountryCode);
@@ -102,7 +136,17 @@ export function TitleBar() {
                 <MenubarTrigger className="cursor-pointer w-8 h-7 p-0 flex items-center justify-center hover:bg-muted transition-colors rounded data-[state=open]:bg-muted">
                     <SlidersHorizontal className="w-3.5 h-3.5"/>
                 </MenubarTrigger>
-                <MenubarContent align="end" className="min-w-[280px]">
+                <MenubarContent align="end" className="min-w-70">
+                    <div className="px-2 py-1.5 space-y-2">
+                        <div className="flex items-center justify-between gap-3">
+                            <MenubarLabel className="p-0">Preview Volume</MenubarLabel>
+                            <span className="text-xs font-medium text-muted-foreground tabular-nums">
+                                {previewVolume}%
+                            </span>
+                        </div>
+                        <Slider value={[previewVolume]} min={0} max={100} step={5} onValueChange={handlePreviewVolumeChange} onValueCommit={handlePreviewVolumeCommit} aria-label="Preview volume"/>
+                    </div>
+                    <MenubarSeparator />
                     <div className="flex items-center gap-1.5 px-2 py-1.5">
                         <MenubarLabel className="p-0">Network</MenubarLabel>
                         {isSpotifyBlockedCountry && (<span className="text-xs font-medium text-destructive">
@@ -112,7 +156,7 @@ export function TitleBar() {
                     <div className="px-2 py-1.5 space-y-1">
                         <div className="flex items-center justify-between gap-3">
                             <div className="flex items-center gap-2 min-w-0">
-                                {detectedFlagPath ? (<img src={detectedFlagPath} alt={detectedCountryCode} className="h-3.5 w-[18px] rounded-[2px] border object-cover bg-muted"/>) : (<Globe className="w-4 h-4 opacity-70"/>)}
+                                {detectedFlagPath ? (<img src={detectedFlagPath} alt={detectedCountryCode} className="h-3.5 w-4.5 rounded-[2px] border object-cover bg-muted"/>) : (<Globe className="w-4 h-4 opacity-70"/>)}
                                 <span className="font-mono text-xs truncate">
                                     {isLoadingCurrentIPInfo
             ? "Detecting..."

frontend/src/components/ui/select.tsx

@@ -37,14 +37,24 @@ function SelectContent({ className, children, position = "popper", align = "cent
 function SelectLabel({ className, ...props }: React.ComponentProps<typeof SelectPrimitive.Label>) {
     return (<SelectPrimitive.Label data-slot="select-label" className={cn("text-muted-foreground px-2 py-1.5 text-xs", className)} {...props}/>);
 }
-function SelectItem({ className, children, ...props }: React.ComponentProps<typeof SelectPrimitive.Item>) {
-    return (<SelectPrimitive.Item data-slot="select-item" className={cn("focus:bg-accent focus:text-accent-foreground [&_svg:not([class*='text-'])]:text-muted-foreground relative flex w-full cursor-default items-center gap-2 rounded-sm py-1.5 pr-8 pl-2 text-sm outline-hidden select-none data-disabled:pointer-events-none data-disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-4 *:[span]:last:flex *:[span]:last:items-center *:[span]:last:gap-2", className)} {...props}>
-      <span className="absolute right-2 flex size-3.5 items-center justify-center">
+function SelectItem({ className, children, indicatorPosition = "right", trailingAction, ...props }: React.ComponentProps<typeof SelectPrimitive.Item> & {
+    indicatorPosition?: "right" | "inline";
+    trailingAction?: React.ReactNode;
+}) {
+    return (<SelectPrimitive.Item data-slot="select-item" className={cn("focus:bg-accent focus:text-accent-foreground [&_svg:not([class*='text-'])]:text-muted-foreground relative flex w-full cursor-default items-center gap-2 rounded-sm py-1.5 pl-2 text-sm outline-hidden select-none data-disabled:pointer-events-none data-disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-4", indicatorPosition === "right" ? "pr-8" : "pr-2", trailingAction ? "pr-10" : undefined, className)} {...props}>
+      <span className="flex min-w-0 items-center gap-2">
+        <SelectPrimitive.ItemText>{children}</SelectPrimitive.ItemText>
+        {indicatorPosition === "inline" && (<SelectPrimitive.ItemIndicator>
+            <CheckIcon className="size-4"/>
+          </SelectPrimitive.ItemIndicator>)}
+      </span>
+      {trailingAction ? (<span className="absolute right-2 flex items-center justify-center">
+          {trailingAction}
+        </span>) : indicatorPosition === "right" ? (<span className="absolute right-2 flex size-3.5 items-center justify-center">
           <SelectPrimitive.ItemIndicator>
             <CheckIcon className="size-4"/>
           </SelectPrimitive.ItemIndicator>
-      </span>
-      <SelectPrimitive.ItemText>{children}</SelectPrimitive.ItemText>
+        </span>) : null}
     </SelectPrimitive.Item>);
 }
 function SelectSeparator({ className, ...props }: React.ComponentProps<typeof SelectPrimitive.Separator>) {

frontend/src/components/ui/slider.tsx

@@ -0,0 +1,17 @@
+import * as React from "react";
+import * as SliderPrimitive from "@radix-ui/react-slider";
+import { cn } from "@/lib/utils";
+function Slider({ className, defaultValue, value, min = 0, max = 100, ...props }: React.ComponentProps<typeof SliderPrimitive.Root>) {
+    const values = Array.isArray(value)
+        ? value
+        : Array.isArray(defaultValue)
+            ? defaultValue
+            : [min];
+    return (<SliderPrimitive.Root data-slot="slider" defaultValue={defaultValue} value={value} min={min} max={max} className={cn("relative flex w-full touch-none select-none items-center data-[disabled]:opacity-50", className)} {...props}>
+            <SliderPrimitive.Track data-slot="slider-track" className="relative h-2 w-full grow overflow-hidden rounded-full bg-muted">
+                <SliderPrimitive.Range data-slot="slider-range" className="absolute h-full rounded-full bg-primary"/>
+            </SliderPrimitive.Track>
+            {values.map((_, index) => (<SliderPrimitive.Thumb key={index} data-slot="slider-thumb" className="block size-4 shrink-0 rounded-full border-2 border-primary bg-background shadow-sm transition-[color,box-shadow] hover:shadow-md focus-visible:outline-none focus-visible:ring-4 focus-visible:ring-ring/40 disabled:pointer-events-none disabled:opacity-50"/>))}
+        </SliderPrimitive.Root>);
+}
+export { Slider };

frontend/src/hooks/useApiStatus.ts

@@ -1,9 +1,8 @@
 import { useEffect, useState } from "react";
-import { API_SOURCES, checkAllApiStatuses, ensureApiStatusCheckStarted, getApiStatusState, subscribeApiStatus, } from "@/lib/api-status";
+import { API_SOURCES, checkApiStatus, getApiStatusState, subscribeApiStatus, } from "@/lib/api-status";
 export function useApiStatus() {
     const [state, setState] = useState(getApiStatusState);
     useEffect(() => {
-        ensureApiStatusCheckStarted();
         return subscribeApiStatus(() => {
             setState(getApiStatusState());
         });
@@ -11,6 +10,6 @@ export function useApiStatus() {
     return {
         ...state,
         sources: API_SOURCES,
-        refreshAll: () => checkAllApiStatuses(true),
+        checkOne: (sourceId: string) => checkApiStatus(sourceId),
     };
 }

frontend/src/hooks/useDownload.ts

@@ -36,13 +36,17 @@ const GetTrackISRC = (spotifyId: string): Promise<string> => (window as any)["go
 async function resolveTemplateISRC(settings: {
     folderTemplate?: string;
     filenameTemplate?: string;
+    existingFileCheckMode?: string;
 }, spotifyId?: string): Promise<string> {
     if (!spotifyId) {
         return "";
     }
     const folderTemplate = settings.folderTemplate || "";
     const filenameTemplate = settings.filenameTemplate || "";
-    if (!folderTemplate.includes("{isrc}") && !filenameTemplate.includes("{isrc}")) {
+    const shouldResolveISRC = settings.existingFileCheckMode === "isrc" ||
+        folderTemplate.includes("{isrc}") ||
+        filenameTemplate.includes("{isrc}");
+    if (!shouldResolveISRC) {
         return "";
     }
     try {
@@ -52,8 +56,18 @@ async function resolveTemplateISRC(settings: {
         return "";
     }
 }
+function getTidalAudioFormat(settings: any, mode: "single" | "auto"): "LOSSLESS" | "HI_RES_LOSSLESS" {
+    if (mode === "auto") {
+        return (settings.autoQuality || "24") === "24" ? "HI_RES_LOSSLESS" : "LOSSLESS";
+    }
+    return settings.tidalQuality || "LOSSLESS";
+}
+function shouldFetchStreamingURLs(order: string[]): boolean {
+    return order.includes("amazon") || order.includes("tidal");
+}
 export function useDownload(region: string) {
     const [downloadProgress, setDownloadProgress] = useState<number>(0);
+    const [downloadRemainingCount, setDownloadRemainingCount] = useState<number>(0);
     const [isDownloading, setIsDownloading] = useState(false);
     const [downloadingTrack, setDownloadingTrack] = useState<string | null>(null);
     const [bulkDownloadType, setBulkDownloadType] = useState<"all" | "selected" | null>(null);
@@ -65,10 +79,19 @@ export function useDownload(region: string) {
         artists: string;
     } | null>(null);
     const shouldStopDownloadRef = useRef(false);
+    const updateBatchProgress = (completedCount: number, totalCount: number) => {
+        const safeTotalCount = Math.max(0, totalCount);
+        const safeCompletedCount = Math.min(Math.max(0, completedCount), safeTotalCount);
+        setDownloadProgress(safeTotalCount > 0 ? Math.min(100, Math.round((safeCompletedCount / safeTotalCount) * 100)) : 0);
+        setDownloadRemainingCount(Math.max(0, safeTotalCount - safeCompletedCount));
+    };
     const downloadWithAutoFallback = async (id: string, settings: any, trackName?: string, artistName?: string, albumName?: string, playlistName?: string, position?: number, spotifyId?: string, durationMs?: number, releaseYear?: string, albumArtist?: string, releaseDate?: string, coverUrl?: string, spotifyTrackNumber?: number, spotifyDiscNumber?: number, spotifyTotalTracks?: number, spotifyTotalDiscs?: number, copyright?: string, publisher?: string) => {
         const service = settings.downloader;
         const query = trackName && artistName ? `${trackName} ${artistName} ` : undefined;
         const os = settings.operatingSystem;
+        const customTidalApi = typeof settings.customTidalApi === "string" && settings.customTidalApi.trim().startsWith("https://")
+            ? settings.customTidalApi.trim().replace(/\/+$/g, "")
+            : undefined;
         let outputDir = settings.downloadPath;
         let useAlbumTrackNumber = false;
         const placeholder = "__SLASH_PLACEHOLDER__";
@@ -170,8 +193,9 @@ export function useDownload(region: string) {
             itemID = await AddToDownloadQueue(id, trackName || "", displayArtist || "", albumName || "");
         }
         if (service === "auto") {
+            const order = (settings.autoOrder || "tidal-amazon-qobuz").split("-");
             let streamingURLs: any = null;
-            if (spotifyId) {
+            if (spotifyId && shouldFetchStreamingURLs(order)) {
                 try {
                     const { GetStreamingURLs } = await import("../../wailsjs/go/main/App");
                     const urlsJson = await GetStreamingURLs(spotifyId, region);
@@ -182,16 +206,15 @@ export function useDownload(region: string) {
                 }
             }
             const durationSeconds = durationMs ? Math.round(durationMs / 1000) : undefined;
-            const order = (settings.autoOrder || "tidal-amazon-qobuz").split("-");
             let lastResponse: any = { success: false, error: "No matching services found" };
             const fallbackErrors: string[] = [];
+            const tidalQuality = getTidalAudioFormat(settings, "auto");
             const is24Bit = (settings.autoQuality || "24") === "24";
-            const tidalQuality = is24Bit ? "HI_RES_LOSSLESS" : "LOSSLESS";
             const qobuzQuality = is24Bit ? "27" : "6";
             for (const s of order) {
                 if (s === "tidal" && streamingURLs?.tidal_url) {
                     try {
-                        logger.debug(`trying tidal for: ${trackName} - ${artistName}`);
+                        logger.debug(`trying Tidal for: ${trackName} - ${artistName}`);
                         const response = await downloadTrack({
                             service: "tidal",
                             query,
@@ -209,10 +232,11 @@ export function useDownload(region: string) {
                             spotify_id: spotifyId,
                             embed_lyrics: settings.embedLyrics,
                             embed_max_quality_cover: settings.embedMaxQualityCover,
-                            service_url: streamingURLs.tidal_url,
+                            service_url: streamingURLs?.tidal_url,
                             duration: durationSeconds,
                             item_id: itemID,
                             audio_format: tidalQuality,
+                            tidal_api_url: customTidalApi,
                             spotify_track_number: spotifyTrackNumber,
                             spotify_disc_number: spotifyDiscNumber,
                             spotify_total_tracks: spotifyTotalTracks,
@@ -225,16 +249,16 @@ export function useDownload(region: string) {
                             embed_genre: settings.embedGenre,
                         });
                         if (response.success) {
-                            logger.success(`tidal: ${trackName} - ${artistName}`);
+                            logger.success(`Tidal: ${trackName} - ${artistName}`);
                             return response;
                         }
                         const errMsg = response.error || response.message || "Failed";
                         fallbackErrors.push(`[Tidal] ${errMsg}`);
                         lastResponse = response;
-                        logger.warning(`tidal failed, trying next...`);
+                        logger.warning(`Tidal failed, trying next...`);
                     }
                     catch (err) {
-                        logger.error(`tidal error: ${err}`);
+                        logger.error(`Tidal error: ${err}`);
                         fallbackErrors.push(`[Tidal] ${String(err)}`);
                         lastResponse = { success: false, error: String(err) };
                     }
@@ -344,7 +368,7 @@ export function useDownload(region: string) {
         const durationSecondsForFallback = durationMs ? Math.round(durationMs / 1000) : undefined;
         let audioFormat: string | undefined;
         if (service === "tidal") {
-            audioFormat = settings.tidalQuality || "LOSSLESS";
+            audioFormat = getTidalAudioFormat(settings, "single");
         }
         else if (service === "qobuz") {
             audioFormat = settings.qobuzQuality || "6";
@@ -373,6 +397,7 @@ export function useDownload(region: string) {
             duration: durationSecondsForFallback,
             item_id: itemID,
             audio_format: audioFormat,
+            tidal_api_url: service === "tidal" ? customTidalApi : undefined,
             spotify_track_number: spotifyTrackNumber,
             spotify_disc_number: spotifyDiscNumber,
             spotify_total_tracks: spotifyTotalTracks,
@@ -380,6 +405,7 @@ export function useDownload(region: string) {
             isrc: resolvedTemplateISRC || undefined,
             copyright: copyright,
             publisher: publisher,
+            use_first_artist_only: settings.useFirstArtistOnly,
             use_single_genre: settings.useSingleGenre,
             embed_genre: settings.embedGenre,
         });
@@ -451,8 +477,9 @@ export function useDownload(region: string) {
             }
         }
         if (service === "auto") {
+            const order = (settings.autoOrder || "tidal-amazon-qobuz").split("-");
             let streamingURLs: any = null;
-            if (spotifyId) {
+            if (spotifyId && shouldFetchStreamingURLs(order)) {
                 try {
                     const { GetStreamingURLs } = await import("../../wailsjs/go/main/App");
                     const urlsJson = await GetStreamingURLs(spotifyId, region);
@@ -463,16 +490,15 @@ export function useDownload(region: string) {
                 }
             }
             const durationSeconds = durationMs ? Math.round(durationMs / 1000) : undefined;
-            const order = (settings.autoOrder || "tidal-amazon-qobuz").split("-");
             let lastResponse: any = { success: false, error: "No matching services found" };
             const fallbackErrors: string[] = [];
+            const tidalQuality = getTidalAudioFormat(settings, "auto");
             const is24Bit = (settings.autoQuality || "24") === "24";
-            const tidalQuality = is24Bit ? "HI_RES_LOSSLESS" : "LOSSLESS";
             const qobuzQuality = is24Bit ? "27" : "6";
             for (const s of order) {
                 if (s === "tidal" && streamingURLs?.tidal_url) {
                     try {
-                        logger.debug(`trying tidal for: ${trackName} - ${artistName}`);
+                        logger.debug(`trying Tidal for: ${trackName} - ${artistName}`);
                         const response = await downloadTrack({
                             service: "tidal",
                             query,
@@ -490,7 +516,7 @@ export function useDownload(region: string) {
                             spotify_id: spotifyId,
                             embed_lyrics: settings.embedLyrics,
                             embed_max_quality_cover: settings.embedMaxQualityCover,
-                            service_url: streamingURLs.tidal_url,
+                            service_url: streamingURLs?.tidal_url,
                             duration: durationSeconds,
                             item_id: itemID,
                             audio_format: tidalQuality,
@@ -506,16 +532,16 @@ export function useDownload(region: string) {
                             embed_genre: settings.embedGenre,
                         });
                         if (response.success) {
-                            logger.success(`tidal: ${trackName} - ${artistName}`);
+                            logger.success(`Tidal: ${trackName} - ${artistName}`);
                             return response;
                         }
                         const errMsg = response.error || response.message || "Failed";
                         fallbackErrors.push(`[Tidal] ${errMsg}`);
                         lastResponse = response;
-                        logger.warning(`tidal failed, trying next...`);
+                        logger.warning(`Tidal failed, trying next...`);
                     }
                     catch (err) {
-                        logger.error(`tidal error: ${err}`);
+                        logger.error(`Tidal error: ${err}`);
                         fallbackErrors.push(`[Tidal] ${String(err)}`);
                         lastResponse = { success: false, error: String(err) };
                     }
@@ -628,7 +654,7 @@ export function useDownload(region: string) {
         const durationSecondsForFallback = durationMs ? Math.round(durationMs / 1000) : undefined;
         let audioFormat: string | undefined;
         if (service === "tidal") {
-            audioFormat = settings.tidalQuality || "LOSSLESS";
+            audioFormat = getTidalAudioFormat(settings, "single");
         }
         else if (service === "qobuz") {
             audioFormat = settings.qobuzQuality || "6";
@@ -720,6 +746,8 @@ export function useDownload(region: string) {
         setIsDownloading(true);
         setBulkDownloadType("selected");
         setDownloadProgress(0);
+        setDownloadRemainingCount(selectedTracks.length);
+        setCurrentDownloadInfo(null);
         let outputDir = settings.downloadPath;
         const os = settings.operatingSystem;
         const useAlbumTag = settings.folderTemplate?.includes("{album}");
@@ -788,7 +816,7 @@ export function useDownload(region: string) {
         let errorCount = 0;
         let skippedCount = existingSpotifyIDs.size;
         const total = selectedTracks.length;
-        setDownloadProgress(Math.round((skippedCount / total) * 100));
+        updateBatchProgress(skippedCount, total);
         for (let i = 0; i < tracksToDownload.length; i++) {
             if (shouldStopDownloadRef.current) {
                 toast.info(`Download stopped. ${successCount} tracks downloaded, ${tracksToDownload.length - i} remaining.`);
@@ -841,12 +869,13 @@ export function useDownload(region: string) {
                 }
             }
             const completedCount = skippedCount + successCount + errorCount;
-            setDownloadProgress(Math.min(100, Math.round((completedCount / total) * 100)));
+            updateBatchProgress(completedCount, total);
         }
         setDownloadingTrack(null);
         setCurrentDownloadInfo(null);
         setIsDownloading(false);
         setBulkDownloadType(null);
+        updateBatchProgress(0, 0);
         shouldStopDownloadRef.current = false;
         const { CancelAllQueuedItems } = await import("../../wailsjs/go/main/App");
         await CancelAllQueuedItems();
@@ -895,6 +924,8 @@ export function useDownload(region: string) {
         setIsDownloading(true);
         setBulkDownloadType("all");
         setDownloadProgress(0);
+        setDownloadRemainingCount(tracksWithId.length);
+        setCurrentDownloadInfo(null);
         let outputDir = settings.downloadPath;
         const os = settings.operatingSystem;
         const useAlbumTag = settings.folderTemplate?.includes("{album}");
@@ -958,7 +989,7 @@ export function useDownload(region: string) {
         let errorCount = 0;
         let skippedCount = existingSpotifyIDs.size;
         const total = tracksWithId.length;
-        setDownloadProgress(Math.round((skippedCount / total) * 100));
+        updateBatchProgress(skippedCount, total);
         for (let i = 0; i < tracksToDownload.length; i++) {
             if (shouldStopDownloadRef.current) {
                 toast.info(`Download stopped. ${successCount} tracks downloaded, ${tracksToDownload.length - i} remaining.`);
@@ -1008,12 +1039,13 @@ export function useDownload(region: string) {
                 await MarkDownloadItemFailed(itemID, err instanceof Error ? err.message : String(err));
             }
             const completedCount = skippedCount + successCount + errorCount;
-            setDownloadProgress(Math.min(100, Math.round((completedCount / total) * 100)));
+            updateBatchProgress(completedCount, total);
         }
         setDownloadingTrack(null);
         setCurrentDownloadInfo(null);
         setIsDownloading(false);
         setBulkDownloadType(null);
+        updateBatchProgress(0, 0);
         shouldStopDownloadRef.current = false;
         const { CancelAllQueuedItems: CancelQueued } = await import("../../wailsjs/go/main/App");
         await CancelQueued();
@@ -1060,6 +1092,7 @@ export function useDownload(region: string) {
     };
     return {
         downloadProgress,
+        downloadRemainingCount,
         isDownloading,
         downloadingTrack,
         bulkDownloadType,

frontend/src/hooks/useLyrics.ts

@@ -9,13 +9,17 @@ const GetTrackISRC = (spotifyId: string): Promise<string> => (window as any)["go
 async function resolveTemplateISRC(settings: {
     folderTemplate?: string;
     filenameTemplate?: string;
+    existingFileCheckMode?: string;
 }, spotifyId?: string): Promise<string> {
     if (!spotifyId) {
         return "";
     }
     const folderTemplate = settings.folderTemplate || "";
     const filenameTemplate = settings.filenameTemplate || "";
-    if (!folderTemplate.includes("{isrc}") && !filenameTemplate.includes("{isrc}")) {
+    const shouldResolveISRC = settings.existingFileCheckMode === "isrc" ||
+        folderTemplate.includes("{isrc}") ||
+        filenameTemplate.includes("{isrc}");
+    if (!shouldResolveISRC) {
         return "";
     }
     try {

frontend/src/hooks/usePreview.ts

@@ -1,32 +1,34 @@
-import { useState, useEffect } from "react";
+import { useEffect, useRef, useState } from "react";
 import { GetPreviewURL } from "@/../wailsjs/go/main/App";
-import { SPOTIFY_PREVIEW_VOLUME } from "@/lib/preview";
+import { getPreviewVolume } from "@/lib/preview";
+import { createPreviewPlayback, type PreviewPlayback } from "@/lib/preview-player";
 import { toast } from "sonner";
 export function usePreview() {
     const [loadingPreview, setLoadingPreview] = useState<string | null>(null);
-    const [currentAudio, setCurrentAudio] = useState<HTMLAudioElement | null>(null);
     const [playingTrack, setPlayingTrack] = useState<string | null>(null);
+    const currentPlaybackRef = useRef<PreviewPlayback | null>(null);
+    const stopCurrentAudio = () => {
+        if (!currentPlaybackRef.current) {
+            return;
+        }
+        currentPlaybackRef.current.destroy();
+        currentPlaybackRef.current = null;
+    };
     useEffect(() => {
         return () => {
-            if (currentAudio) {
-                currentAudio.pause();
-                currentAudio.currentTime = 0;
-            }
+            stopCurrentAudio();
         };
-    }, [currentAudio]);
+    }, []);
     const playPreview = async (trackId: string, trackName: string) => {
         try {
+            const currentAudio = currentPlaybackRef.current?.audio;
             if (playingTrack === trackId && currentAudio) {
-                currentAudio.pause();
-                currentAudio.currentTime = 0;
+                stopCurrentAudio();
                 setPlayingTrack(null);
-                setCurrentAudio(null);
                 return;
             }
             if (currentAudio) {
-                currentAudio.pause();
-                currentAudio.currentTime = 0;
-                setCurrentAudio(null);
+                stopCurrentAudio();
                 setPlayingTrack(null);
             }
             setLoadingPreview(trackId);
@@ -38,15 +40,18 @@ export function usePreview() {
                 setLoadingPreview(null);
                 return;
             }
-            const audio = new Audio(previewURL);
-            audio.volume = SPOTIFY_PREVIEW_VOLUME;
+            const playback = await createPreviewPlayback(previewURL, getPreviewVolume());
+            const audio = playback.audio;
             audio.addEventListener("loadeddata", () => {
                 setLoadingPreview(null);
                 setPlayingTrack(trackId);
             });
             audio.addEventListener("ended", () => {
                 setPlayingTrack(null);
-                setCurrentAudio(null);
+                if (currentPlaybackRef.current?.audio === audio) {
+                    currentPlaybackRef.current.destroy();
+                    currentPlaybackRef.current = null;
+                }
             });
             audio.addEventListener("error", () => {
                 toast.error("Failed to play preview", {
@@ -54,27 +59,27 @@ export function usePreview() {
                 });
                 setLoadingPreview(null);
                 setPlayingTrack(null);
-                setCurrentAudio(null);
+                if (currentPlaybackRef.current?.audio === audio) {
+                    currentPlaybackRef.current.destroy();
+                    currentPlaybackRef.current = null;
+                }
             });
-            setCurrentAudio(audio);
+            currentPlaybackRef.current = playback;
             await audio.play();
         }
-        catch (error: any) {
+        catch (error: unknown) {
+            stopCurrentAudio();
             console.error("Preview error:", error);
             toast.error("Preview not available", {
-                description: error?.message || `Could not load preview for "${trackName}"`,
+                description: error instanceof Error ? error.message : `Could not load preview for "${trackName}"`,
             });
             setLoadingPreview(null);
             setPlayingTrack(null);
         }
     };
     const stopPreview = () => {
-        if (currentAudio) {
-            currentAudio.pause();
-            currentAudio.currentTime = 0;
-            setCurrentAudio(null);
+        stopCurrentAudio();
         setPlayingTrack(null);
-        }
     };
     return {
         playPreview,

frontend/src/index.css

@@ -73,6 +73,13 @@
 }
 
 @layer base {
+  html,
+  body,
+  #root {
+    height: 100%;
+    overflow: hidden;
+  }
+
   * {
     @apply border-border outline-ring/50;
   }

frontend/src/lib/api-status.ts

@@ -1,4 +1,4 @@
-import { CheckAPIStatus, FetchUnifiedAPIStatus } from "../../wailsjs/go/main/App";
+import { CheckAPIStatus } from "../../wailsjs/go/main/App";
 import { CHECK_TIMEOUT_MS, withTimeout } from "@/lib/async-timeout";
 export type ApiCheckStatus = "checking" | "online" | "offline" | "idle";
 export interface ApiSource {
@@ -7,39 +7,42 @@ export interface ApiSource {
     name: string;
     url: string;
 }
+interface SpotiFLACNextSource {
+    id: string;
+    name: string;
+    statusKey?: string;
+    statusPrefix?: string;
+}
+type SpotiFLACNextStatusResponse = Partial<Record<string, string>>;
 export const API_SOURCES: ApiSource[] = [
-    { id: "tidal1", type: "tidal", name: "Tidal A", url: "https://hifi-one.spotisaver.net" },
-    { id: "tidal2", type: "tidal", name: "Tidal B", url: "https://hifi-two.spotisaver.net" },
-    { id: "tidal3", type: "tidal", name: "Tidal C", url: "https://eu-central.monochrome.tf" },
-    { id: "tidal4", type: "tidal", name: "Tidal D", url: "https://us-west.monochrome.tf" },
-    { id: "tidal5", type: "tidal", name: "Tidal E", url: "https://api.monochrome.tf" },
-    { id: "tidal6", type: "tidal", name: "Tidal F", url: "https://monochrome-api.samidy.com" },
-    { id: "tidal7", type: "tidal", name: "Tidal G", url: "https://tidal.kinoplus.online" },
-    { id: "qobuz1", type: "qobuz", name: "Qobuz A", url: "https://dab.yeet.su" },
-    { id: "qobuz2", type: "qobuz", name: "Qobuz B", url: "https://dabmusic.xyz" },
-    { id: "qobuz3", type: "qbz", name: "Qobuz C", url: "https://qbz.afkarxyz.qzz.io" },
-    { id: "amazon1", type: "amazon", name: "Amazon Music", url: "https://amzn.afkarxyz.qzz.io" },
-    { id: "lrclib", type: "lrclib", name: "LRCLIB", url: "https://lrclib.net" },
+    { id: "tidal", type: "tidal", name: "Tidal", url: "" },
+    { id: "qobuz", type: "qobuz", name: "Qobuz", url: "" },
+    { id: "amazon", type: "amazon", name: "Amazon Music", url: "" },
     { id: "musicbrainz", type: "musicbrainz", name: "MusicBrainz", url: "https://musicbrainz.org" },
 ];
+export const SPOTIFLAC_NEXT_SOURCES: SpotiFLACNextSource[] = [
+    { id: "tidal", name: "Tidal", statusKey: "tidal" },
+    { id: "qobuz", name: "Qobuz", statusPrefix: "qobuz_" },
+    { id: "amazon", name: "Amazon Music", statusPrefix: "amazon_" },
+    { id: "deezer", name: "Deezer", statusPrefix: "deezer_" },
+    { id: "apple", name: "Apple Music", statusKey: "apple" },
+];
+const SPOTIFLAC_NEXT_STATUS_URL = "https://gist.githubusercontent.com/afkarxyz/6e57cd362cbd67f889e3a91a76254a5e/raw";
+const SPOTIFLAC_NEXT_MAX_ATTEMPTS = 3;
+const SPOTIFLAC_NEXT_RETRY_DELAY_MS = 1200;
 type ApiStatusState = {
-    isCheckingAll: boolean;
+    checkingSources: Record<string, boolean>;
     statuses: Record<string, ApiCheckStatus>;
+    nextStatuses: Record<string, ApiCheckStatus>;
 };
 let apiStatusState: ApiStatusState = {
-    isCheckingAll: false,
+    checkingSources: {},
     statuses: {},
+    nextStatuses: {},
 };
-let activeCheckAll: Promise<void> | null = null;
+let activeCheckNextOnly: Promise<void> | null = null;
+const activeSourceChecks = new Map<string, Promise<void>>();
 const listeners = new Set<() => void>();
-type SpotiFLACUnifiedStatusResponse = {
-    tidal?: string;
-    qobuz_a?: string;
-    qobuz_b?: string;
-    qobuz_c?: string;
-    amazon?: string;
-    lrclib?: string;
-};
 function emitApiStatusChange() {
     for (const listener of listeners) {
         listener();
@@ -49,39 +52,76 @@ function setApiStatusState(updater: (current: ApiStatusState) => ApiStatusState)
     apiStatusState = updater(apiStatusState);
     emitApiStatusChange();
 }
-function statusFromUnifiedValue(value: string | undefined): ApiCheckStatus {
-    return value === "up" ? "online" : "offline";
-}
-async function fetchUnifiedStatuses(forceRefresh: boolean): Promise<Pick<ApiStatusState, "statuses">> {
-    const response = await FetchUnifiedAPIStatus(forceRefresh);
-    const payload = JSON.parse(response) as SpotiFLACUnifiedStatusResponse;
-    const tidalStatus = statusFromUnifiedValue(payload.tidal);
-    return {
-        statuses: {
-            tidal1: tidalStatus,
-            tidal2: tidalStatus,
-            tidal3: tidalStatus,
-            tidal4: tidalStatus,
-            tidal5: tidalStatus,
-            tidal6: tidalStatus,
-            tidal7: tidalStatus,
-            qobuz1: statusFromUnifiedValue(payload.qobuz_a),
-            qobuz2: statusFromUnifiedValue(payload.qobuz_b),
-            qobuz3: statusFromUnifiedValue(payload.qobuz_c),
-            amazon1: statusFromUnifiedValue(payload.amazon),
-            lrclib: statusFromUnifiedValue(payload.lrclib),
-        },
-    };
-}
-async function checkMusicBrainzStatus(): Promise<ApiCheckStatus> {
+async function checkSourceStatus(source: ApiSource): Promise<ApiCheckStatus> {
     try {
-        const isOnline = await withTimeout(CheckAPIStatus("musicbrainz", "https://musicbrainz.org"), CHECK_TIMEOUT_MS, "API status check timed out after 10 seconds for MusicBrainz");
+        const isOnline = await withTimeout(CheckAPIStatus(source.type, source.url), CHECK_TIMEOUT_MS, `API status check timed out after 10 seconds for ${source.name}`);
         return isOnline ? "online" : "offline";
     }
     catch {
         return "offline";
     }
 }
+function anyNextVariantUp(values: Array<string | undefined>): ApiCheckStatus {
+    return values.some((value) => value === "up") ? "online" : "offline";
+}
+function getNextSourceValues(payload: SpotiFLACNextStatusResponse, source: SpotiFLACNextSource): string[] {
+    if (source.statusKey) {
+        const value = payload[source.statusKey];
+        return typeof value === "string" ? [value] : [];
+    }
+    if (!source.statusPrefix) {
+        return [];
+    }
+    const values: string[] = [];
+    for (const [key, value] of Object.entries(payload)) {
+        if (key.startsWith(source.statusPrefix) && typeof value === "string") {
+            values.push(value);
+        }
+    }
+    return values;
+}
+function delay(ms: number): Promise<void> {
+    return new Promise((resolve) => window.setTimeout(resolve, ms));
+}
+function getSafeNextStatusesFallback(currentStatuses: Record<string, ApiCheckStatus>): Record<string, ApiCheckStatus> {
+    return SPOTIFLAC_NEXT_SOURCES.reduce<Record<string, ApiCheckStatus>>((acc, source) => {
+        const current = currentStatuses[source.id];
+        acc[source.id] = current === "online" || current === "offline" ? current : "idle";
+        return acc;
+    }, {});
+}
+async function fetchSpotiFLACNextStatusesOnce(): Promise<Record<string, ApiCheckStatus>> {
+    const response = await withTimeout(fetch(SPOTIFLAC_NEXT_STATUS_URL, {
+        method: "GET",
+        cache: "no-store",
+        headers: {
+            Accept: "application/json",
+        },
+    }), CHECK_TIMEOUT_MS, "SpotiFLAC Next status check timed out after 10 seconds");
+    if (!response.ok) {
+        throw new Error(`SpotiFLAC Next status returned ${response.status}`);
+    }
+    const payload = (await response.json()) as SpotiFLACNextStatusResponse;
+    return SPOTIFLAC_NEXT_SOURCES.reduce<Record<string, ApiCheckStatus>>((acc, source) => {
+        acc[source.id] = anyNextVariantUp(getNextSourceValues(payload, source));
+        return acc;
+    }, {});
+}
+async function checkSpotiFLACNextStatuses(): Promise<Record<string, ApiCheckStatus>> {
+    let lastError: unknown = null;
+    for (let attempt = 1; attempt <= SPOTIFLAC_NEXT_MAX_ATTEMPTS; attempt++) {
+        try {
+            return await fetchSpotiFLACNextStatusesOnce();
+        }
+        catch (error) {
+            lastError = error;
+            if (attempt < SPOTIFLAC_NEXT_MAX_ATTEMPTS) {
+                await delay(SPOTIFLAC_NEXT_RETRY_DELAY_MS * attempt);
+            }
+        }
+    }
+    throw lastError instanceof Error ? lastError : new Error("SpotiFLAC Next status check failed");
+}
 export function getApiStatusState(): ApiStatusState {
     return apiStatusState;
 }
@@ -91,70 +131,98 @@ export function subscribeApiStatus(listener: () => void): () => void {
         listeners.delete(listener);
     };
 }
-export function hasApiStatusResults(): boolean {
-    return API_SOURCES.some((source) => {
-        const status = apiStatusState.statuses[source.id];
+function hasSpotiFLACNextResults(): boolean {
+    return SPOTIFLAC_NEXT_SOURCES.some((source) => {
+        const status = apiStatusState.nextStatuses[source.id];
         return status === "online" || status === "offline";
     });
 }
-export function ensureApiStatusCheckStarted(): void {
-    if (!activeCheckAll && !hasApiStatusResults()) {
-        void checkAllApiStatuses(false);
+export async function checkSpotiFLACNextStatusesOnly(): Promise<void> {
+    if (activeCheckNextOnly) {
+        return activeCheckNextOnly;
     }
-}
-export async function checkAllApiStatuses(forceRefresh: boolean = false): Promise<void> {
-    if (activeCheckAll) {
-        return activeCheckAll;
-    }
-    activeCheckAll = (async () => {
-        const checkingStatuses = Object.fromEntries(API_SOURCES.map((source) => [source.id, "checking" as ApiCheckStatus]));
+    activeCheckNextOnly = (async () => {
+        const checkingNextStatuses = Object.fromEntries(SPOTIFLAC_NEXT_SOURCES.map((source) => [source.id, "checking" as ApiCheckStatus]));
         setApiStatusState((current) => ({
             ...current,
-            isCheckingAll: true,
-            statuses: {
-                ...current.statuses,
-                ...checkingStatuses,
+            nextStatuses: {
+                ...current.nextStatuses,
+                ...checkingNextStatuses,
             },
         }));
         try {
-            const [unifiedResult, musicBrainzStatus] = await Promise.allSettled([
-                withTimeout(fetchUnifiedStatuses(forceRefresh), CHECK_TIMEOUT_MS, "Unified SpotiFLAC status check timed out after 10 seconds"),
-                checkMusicBrainzStatus(),
-            ]);
-            setApiStatusState((current) => {
-                const nextStatuses = { ...current.statuses };
-                if (unifiedResult.status === "fulfilled") {
-                    Object.assign(nextStatuses, unifiedResult.value.statuses);
-                }
-                else {
-                    nextStatuses.tidal1 = "offline";
-                    nextStatuses.tidal2 = "offline";
-                    nextStatuses.tidal3 = "offline";
-                    nextStatuses.tidal4 = "offline";
-                    nextStatuses.tidal5 = "offline";
-                    nextStatuses.tidal6 = "offline";
-                    nextStatuses.tidal7 = "offline";
-                    nextStatuses.qobuz1 = "offline";
-                    nextStatuses.qobuz2 = "offline";
-                    nextStatuses.qobuz3 = "offline";
-                    nextStatuses.amazon1 = "offline";
-                    nextStatuses.lrclib = "offline";
-                }
-                nextStatuses.musicbrainz =
-                    musicBrainzStatus.status === "fulfilled" ? musicBrainzStatus.value : "offline";
-                return {
+            setApiStatusState((current) => ({
                 ...current,
-                    statuses: nextStatuses,
-                };
-            });
+                nextStatuses: { ...current.nextStatuses },
+            }));
+            const nextStatuses = await checkSpotiFLACNextStatuses();
+            setApiStatusState((current) => ({
+                ...current,
+                nextStatuses: {
+                    ...current.nextStatuses,
+                    ...nextStatuses,
+                },
+            }));
+        }
+        catch {
+            setApiStatusState((current) => ({
+                ...current,
+                nextStatuses: getSafeNextStatusesFallback(current.nextStatuses),
+            }));
+        }
+        finally {
+            activeCheckNextOnly = null;
+        }
+    })();
+    return activeCheckNextOnly;
+}
+export function ensureSpotiFLACNextStatusCheckStarted(): void {
+    if (!activeCheckNextOnly && !hasSpotiFLACNextResults()) {
+        void checkSpotiFLACNextStatusesOnly();
+    }
+}
+export async function checkApiStatus(sourceId: string): Promise<void> {
+    const source = API_SOURCES.find((item) => item.id === sourceId);
+    if (!source) {
+        return;
+    }
+    const activeCheck = activeSourceChecks.get(sourceId);
+    if (activeCheck) {
+        return activeCheck;
+    }
+    const task = (async () => {
+        setApiStatusState((current) => ({
+            ...current,
+            checkingSources: {
+                ...current.checkingSources,
+                [sourceId]: true,
+            },
+            statuses: {
+                ...current.statuses,
+                [sourceId]: "checking",
+            },
+        }));
+        try {
+            const status = await checkSourceStatus(source);
+            setApiStatusState((current) => ({
+                ...current,
+                statuses: {
+                    ...current.statuses,
+                    [sourceId]: status,
+                },
+            }));
         }
         finally {
             setApiStatusState((current) => ({
                 ...current,
-                isCheckingAll: false,
+                checkingSources: {
+                    ...current.checkingSources,
+                    [sourceId]: false,
+                },
             }));
-            activeCheckAll = null;
+            activeSourceChecks.delete(sourceId);
         }
     })();
-    return activeCheckAll;
+    activeSourceChecks.set(sourceId, task);
+    return task;
 }

frontend/src/lib/preview-player.ts

@@ -0,0 +1,37 @@
+import { getPreviewVolume, PREVIEW_VOLUME_CHANGED_EVENT } from "@/lib/preview";
+export interface PreviewPlayback {
+    audio: HTMLAudioElement;
+    destroy: () => void;
+}
+export async function createPreviewPlayback(url: string, volume: number): Promise<PreviewPlayback> {
+    const audio = new Audio(url);
+    const applyVolume = (nextVolume: number) => {
+        if (!Number.isFinite(nextVolume)) {
+            return;
+        }
+        audio.volume = Math.min(1, Math.max(0, nextVolume));
+    };
+    applyVolume(volume);
+    const handleSettingsUpdated = () => {
+        applyVolume(getPreviewVolume());
+    };
+    const handlePreviewVolumeChanged = (event: Event) => {
+        const nextVolumePercent = (event as CustomEvent<number>).detail;
+        if (!Number.isFinite(nextVolumePercent)) {
+            return;
+        }
+        applyVolume(nextVolumePercent / 100);
+    };
+    window.addEventListener("settingsUpdated", handleSettingsUpdated);
+    window.addEventListener(PREVIEW_VOLUME_CHANGED_EVENT, handlePreviewVolumeChanged);
+    return {
+        audio,
+        destroy: () => {
+            window.removeEventListener("settingsUpdated", handleSettingsUpdated);
+            window.removeEventListener(PREVIEW_VOLUME_CHANGED_EVENT, handlePreviewVolumeChanged);
+            audio.pause();
+            audio.removeAttribute("src");
+            audio.load();
+        },
+    };
+}

frontend/src/lib/preview.ts

@@ -1 +1,10 @@
+import { getSettings } from "@/lib/settings";
 export const SPOTIFY_PREVIEW_VOLUME = 1;
+export const PREVIEW_VOLUME_CHANGED_EVENT = "previewVolumeChanged";
+export function getPreviewVolume(): number {
+    const previewVolume = getSettings().previewVolume;
+    if (!Number.isFinite(previewVolume)) {
+        return SPOTIFY_PREVIEW_VOLUME;
+    }
+    return Math.min(1, Math.max(0, previewVolume / 100));
+}

frontend/src/lib/settings.ts

@@ -1,15 +1,32 @@
-import { GetDefaults, LoadSettings, SaveSettings as SaveToBackend } from "../../wailsjs/go/main/App";
-export type FontFamily = "google-sans" | "inter" | "poppins" | "roboto" | "dm-sans" | "plus-jakarta-sans" | "manrope" | "space-grotesk" | "noto-sans" | "nunito-sans" | "figtree" | "raleway" | "public-sans" | "outfit" | "jetbrains-mono" | "geist-sans" | "bricolage-grotesque";
+import { GetDefaults, LoadFonts as LoadFontsFromBackend, LoadSettings, SaveFonts as SaveFontsToBackend, SaveSettings as SaveToBackend, } from "../../wailsjs/go/main/App";
+export type BuiltInFontFamily = "google-sans" | "inter" | "poppins" | "roboto" | "dm-sans" | "plus-jakarta-sans" | "manrope" | "space-grotesk" | "noto-sans" | "nunito-sans" | "figtree" | "raleway" | "public-sans" | "outfit" | "jetbrains-mono" | "geist-sans" | "bricolage-grotesque";
+export type CustomFontFamily = `custom-${string}`;
+export type FontFamily = BuiltInFontFamily | CustomFontFamily;
+export interface CustomFontOption {
+    value: CustomFontFamily;
+    label: string;
+    fontFamily: string;
+    url: string;
+}
+export type FontOption = {
+    value: FontFamily;
+    label: string;
+    fontFamily: string;
+    url?: string;
+};
 export type FolderPreset = "none" | "artist" | "album" | "year-album" | "year-artist-album" | "artist-album" | "artist-year-album" | "artist-year-nested-album" | "album-artist" | "album-artist-album" | "album-artist-year-album" | "album-artist-year-nested-album" | "year" | "year-artist" | "custom";
 export type FilenamePreset = "title" | "title-artist" | "artist-title" | "track-title" | "track-title-artist" | "track-artist-title" | "title-album-artist" | "track-title-album-artist" | "artist-album-title" | "track-dash-title" | "disc-track-title" | "disc-track-title-artist" | "custom";
+export type ExistingFileCheckMode = "filename" | "isrc";
 export interface Settings {
     downloadPath: string;
     downloader: "auto" | "tidal" | "qobuz" | "amazon";
+    customTidalApi: string;
     linkResolver: "songstats" | "songlink";
     allowResolverFallback: boolean;
     theme: string;
     themeMode: "auto" | "light" | "dark";
     fontFamily: FontFamily;
+    customFonts: CustomFontOption[];
     folderPreset: FolderPreset;
     folderTemplate: string;
     filenamePreset: FilenamePreset;
@@ -31,6 +48,8 @@ export interface Settings {
     createPlaylistFolder: boolean;
     playlistOwnerFolderName: boolean;
     createM3u8File: boolean;
+    previewVolume: number;
+    existingFileCheckMode: ExistingFileCheckMode;
     useFirstArtistOnly: boolean;
     useSingleGenre: boolean;
     embedGenre: boolean;
@@ -41,54 +60,105 @@ export const FOLDER_PRESETS: Record<FolderPreset, {
     label: string;
     template: string;
 }> = {
-    "none": { label: "No Subfolder", template: "" },
-    "artist": { label: "Artist", template: "{artist}" },
-    "album": { label: "Album", template: "{album}" },
+    none: { label: "No Subfolder", template: "" },
+    artist: { label: "Artist", template: "{artist}" },
+    album: { label: "Album", template: "{album}" },
     "year-album": { label: "[Year] Album", template: "[{year}] {album}" },
-    "year-artist-album": { label: "[Year] Artist - Album", template: "[{year}] {artist} - {album}" },
+    "year-artist-album": {
+        label: "[Year] Artist - Album",
+        template: "[{year}] {artist} - {album}",
+    },
     "artist-album": { label: "Artist / Album", template: "{artist}/{album}" },
-    "artist-year-album": { label: "Artist / [Year] Album", template: "{artist}/[{year}] {album}" },
-    "artist-year-nested-album": { label: "Artist / Year / Album", template: "{artist}/{year}/{album}" },
+    "artist-year-album": {
+        label: "Artist / [Year] Album",
+        template: "{artist}/[{year}] {album}",
+    },
+    "artist-year-nested-album": {
+        label: "Artist / Year / Album",
+        template: "{artist}/{year}/{album}",
+    },
     "album-artist": { label: "Album Artist", template: "{album_artist}" },
-    "album-artist-album": { label: "Album Artist / Album", template: "{album_artist}/{album}" },
-    "album-artist-year-album": { label: "Album Artist / [Year] Album", template: "{album_artist}/[{year}] {album}" },
-    "album-artist-year-nested-album": { label: "Album Artist / Year / Album", template: "{album_artist}/{year}/{album}" },
-    "year": { label: "Year", template: "{year}" },
+    "album-artist-album": {
+        label: "Album Artist / Album",
+        template: "{album_artist}/{album}",
+    },
+    "album-artist-year-album": {
+        label: "Album Artist / [Year] Album",
+        template: "{album_artist}/[{year}] {album}",
+    },
+    "album-artist-year-nested-album": {
+        label: "Album Artist / Year / Album",
+        template: "{album_artist}/{year}/{album}",
+    },
+    year: { label: "Year", template: "{year}" },
     "year-artist": { label: "Year / Artist", template: "{year}/{artist}" },
-    "custom": { label: "Custom...", template: "{artist}/{album}" },
+    custom: { label: "Custom...", template: "{artist}/{album}" },
 };
 export const FILENAME_PRESETS: Record<FilenamePreset, {
     label: string;
     template: string;
 }> = {
-    "title": { label: "Title", template: "{title}" },
+    title: { label: "Title", template: "{title}" },
     "title-artist": { label: "Title - Artist", template: "{title} - {artist}" },
     "artist-title": { label: "Artist - Title", template: "{artist} - {title}" },
     "track-title": { label: "Track. Title", template: "{track}. {title}" },
-    "track-title-artist": { label: "Track. Title - Artist", template: "{track}. {title} - {artist}" },
-    "track-artist-title": { label: "Track. Artist - Title", template: "{track}. {artist} - {title}" },
-    "title-album-artist": { label: "Title - Album Artist", template: "{title} - {album_artist}" },
-    "track-title-album-artist": { label: "Track. Title - Album Artist", template: "{track}. {title} - {album_artist}" },
-    "artist-album-title": { label: "Artist - Album - Title", template: "{artist} - {album} - {title}" },
+    "track-title-artist": {
+        label: "Track. Title - Artist",
+        template: "{track}. {title} - {artist}",
+    },
+    "track-artist-title": {
+        label: "Track. Artist - Title",
+        template: "{track}. {artist} - {title}",
+    },
+    "title-album-artist": {
+        label: "Title - Album Artist",
+        template: "{title} - {album_artist}",
+    },
+    "track-title-album-artist": {
+        label: "Track. Title - Album Artist",
+        template: "{track}. {title} - {album_artist}",
+    },
+    "artist-album-title": {
+        label: "Artist - Album - Title",
+        template: "{artist} - {album} - {title}",
+    },
     "track-dash-title": { label: "Track - Title", template: "{track} - {title}" },
-    "disc-track-title": { label: "Disc-Track. Title", template: "{disc}-{track}. {title}" },
-    "disc-track-title-artist": { label: "Disc-Track. Title - Artist", template: "{disc}-{track}. {title} - {artist}" },
-    "custom": { label: "Custom...", template: "{title} - {artist}" },
+    "disc-track-title": {
+        label: "Disc-Track. Title",
+        template: "{disc}-{track}. {title}",
+    },
+    "disc-track-title-artist": {
+        label: "Disc-Track. Title - Artist",
+        template: "{disc}-{track}. {title} - {artist}",
+    },
+    custom: { label: "Custom...", template: "{title} - {artist}" },
 };
 export const TEMPLATE_VARIABLES = [
     { key: "{title}", description: "Track title", example: "Shake It Off" },
     { key: "{artist}", description: "Track artist", example: "Taylor Swift" },
     { key: "{album}", description: "Album name", example: "1989" },
-    { key: "{album_artist}", description: "Album artist", example: "Taylor Swift" },
+    {
+        key: "{album_artist}",
+        description: "Album artist",
+        example: "Taylor Swift",
+    },
     { key: "{track}", description: "Track number", example: "01" },
     { key: "{disc}", description: "Disc number", example: "1" },
     { key: "{year}", description: "Release year", example: "2014" },
-    { key: "{date}", description: "Release date (YYYY-MM-DD)", example: "2014-10-27" },
-    { key: "{isrc}", description: "Track ISRC", example: "USUM71412345" },
+    {
+        key: "{date}",
+        description: "Release date (YYYY-MM-DD)",
+        example: "2014-10-27",
+    },
+    {
+        key: "{isrc}",
+        description: "Track ISRC",
+        example: "USUM71412345",
+    },
 ];
 function detectOS(): "Windows" | "linux/MacOS" {
     const platform = window.navigator.platform.toLowerCase();
-    if (platform.includes('win')) {
+    if (platform.includes("win")) {
         return "Windows";
     }
     return "linux/MacOS";
@@ -96,11 +166,13 @@ function detectOS(): "Windows" | "linux/MacOS" {
 export const DEFAULT_SETTINGS: Settings = {
     downloadPath: "",
     downloader: "auto",
+    customTidalApi: "",
     linkResolver: "songlink",
     allowResolverFallback: true,
     theme: "yellow",
     themeMode: "auto",
     fontFamily: "google-sans",
+    customFonts: [],
     folderPreset: "none",
     folderTemplate: "",
     filenamePreset: "title-artist",
@@ -119,42 +191,461 @@ export const DEFAULT_SETTINGS: Settings = {
     createPlaylistFolder: true,
     playlistOwnerFolderName: false,
     createM3u8File: false,
+    previewVolume: 100,
+    existingFileCheckMode: "filename",
     useFirstArtistOnly: false,
     useSingleGenre: false,
     embedGenre: false,
     redownloadWithSuffix: false,
-    separator: "semicolon"
+    separator: "semicolon",
 };
-export const FONT_OPTIONS: {
-    value: FontFamily;
-    label: string;
-    fontFamily: string;
-}[] = [
-    { value: "bricolage-grotesque", label: "Bricolage Grotesque", fontFamily: '"Bricolage Grotesque", system-ui, sans-serif' },
-    { value: "dm-sans", label: "DM Sans", fontFamily: '"DM Sans", system-ui, sans-serif' },
-    { value: "figtree", label: "Figtree", fontFamily: '"Figtree", system-ui, sans-serif' },
-    { value: "geist-sans", label: "Geist Sans", fontFamily: '"Geist", system-ui, sans-serif' },
-    { value: "google-sans", label: "Google Sans", fontFamily: '"Google Sans", system-ui, sans-serif' },
-    { value: "inter", label: "Inter", fontFamily: '"Inter", system-ui, sans-serif' },
-    { value: "jetbrains-mono", label: "JetBrains Mono", fontFamily: '"JetBrains Mono", ui-monospace, monospace' },
-    { value: "manrope", label: "Manrope", fontFamily: '"Manrope", system-ui, sans-serif' },
-    { value: "noto-sans", label: "Noto Sans", fontFamily: '"Noto Sans", system-ui, sans-serif' },
-    { value: "nunito-sans", label: "Nunito Sans", fontFamily: '"Nunito Sans", system-ui, sans-serif' },
-    { value: "outfit", label: "Outfit", fontFamily: '"Outfit", system-ui, sans-serif' },
-    { value: "plus-jakarta-sans", label: "Plus Jakarta Sans", fontFamily: '"Plus Jakarta Sans", system-ui, sans-serif' },
-    { value: "poppins", label: "Poppins", fontFamily: '"Poppins", system-ui, sans-serif' },
-    { value: "public-sans", label: "Public Sans", fontFamily: '"Public Sans", system-ui, sans-serif' },
-    { value: "raleway", label: "Raleway", fontFamily: '"Raleway", system-ui, sans-serif' },
-    { value: "roboto", label: "Roboto", fontFamily: '"Roboto", system-ui, sans-serif' },
-    { value: "space-grotesk", label: "Space Grotesk", fontFamily: '"Space Grotesk", system-ui, sans-serif' },
+export const FONT_OPTIONS: FontOption[] = [
+    {
+        value: "bricolage-grotesque",
+        label: "Bricolage Grotesque",
+        fontFamily: '"Bricolage Grotesque", system-ui, sans-serif',
+    },
+    {
+        value: "dm-sans",
+        label: "DM Sans",
+        fontFamily: '"DM Sans", system-ui, sans-serif',
+    },
+    {
+        value: "figtree",
+        label: "Figtree",
+        fontFamily: '"Figtree", system-ui, sans-serif',
+    },
+    {
+        value: "geist-sans",
+        label: "Geist Sans",
+        fontFamily: '"Geist", system-ui, sans-serif',
+    },
+    {
+        value: "google-sans",
+        label: "Google Sans",
+        fontFamily: '"Google Sans", system-ui, sans-serif',
+    },
+    {
+        value: "inter",
+        label: "Inter",
+        fontFamily: '"Inter", system-ui, sans-serif',
+    },
+    {
+        value: "jetbrains-mono",
+        label: "JetBrains Mono",
+        fontFamily: '"JetBrains Mono", ui-monospace, monospace',
+    },
+    {
+        value: "manrope",
+        label: "Manrope",
+        fontFamily: '"Manrope", system-ui, sans-serif',
+    },
+    {
+        value: "noto-sans",
+        label: "Noto Sans",
+        fontFamily: '"Noto Sans", system-ui, sans-serif',
+    },
+    {
+        value: "nunito-sans",
+        label: "Nunito Sans",
+        fontFamily: '"Nunito Sans", system-ui, sans-serif',
+    },
+    {
+        value: "outfit",
+        label: "Outfit",
+        fontFamily: '"Outfit", system-ui, sans-serif',
+    },
+    {
+        value: "plus-jakarta-sans",
+        label: "Plus Jakarta Sans",
+        fontFamily: '"Plus Jakarta Sans", system-ui, sans-serif',
+    },
+    {
+        value: "poppins",
+        label: "Poppins",
+        fontFamily: '"Poppins", system-ui, sans-serif',
+    },
+    {
+        value: "public-sans",
+        label: "Public Sans",
+        fontFamily: '"Public Sans", system-ui, sans-serif',
+    },
+    {
+        value: "raleway",
+        label: "Raleway",
+        fontFamily: '"Raleway", system-ui, sans-serif',
+    },
+    {
+        value: "roboto",
+        label: "Roboto",
+        fontFamily: '"Roboto", system-ui, sans-serif',
+    },
+    {
+        value: "space-grotesk",
+        label: "Space Grotesk",
+        fontFamily: '"Space Grotesk", system-ui, sans-serif',
+    },
 ];
-export function applyFont(fontFamily: FontFamily): void {
-    const font = FONT_OPTIONS.find(f => f.value === fontFamily);
+const BUILT_IN_FONT_VALUES = new Set(FONT_OPTIONS.map((font) => font.value));
+const GOOGLE_FONT_LINK_ID_PREFIX = "spotiflac-custom-font-";
+const GOOGLE_FONTS_CSS_HOST = "fonts.googleapis.com";
+const GOOGLE_FONTS_SPECIMEN_HOST = "fonts.google.com";
+const SETTINGS_KEY = "spotiflac-settings";
+let cachedSettings: Settings | null = null;
+type SettingsPayload = Partial<Settings> & {
+    darkMode?: boolean;
+    [key: string]: unknown;
+};
+const KNOWN_SETTINGS_KEYS = Object.keys(DEFAULT_SETTINGS) as Array<keyof Settings>;
+function extractGoogleFontInputUrl(input: string): string {
+    const trimmed = input.trim();
+    const hrefMatch = trimmed.match(/\bhref=["']([^"']+)["']/i);
+    if (hrefMatch?.[1]) {
+        return hrefMatch[1];
+    }
+    const importMatch = trimmed.match(/@import\s+url\(["']?([^"')]+)["']?\)/i);
+    if (importMatch?.[1]) {
+        return importMatch[1];
+    }
+    return trimmed;
+}
+function coerceGoogleFontUrl(rawUrl: string): string {
+    const trimmed = rawUrl.trim();
+    if (/^https?:\/\//i.test(trimmed)) {
+        return trimmed;
+    }
+    if (/^(fonts\.googleapis\.com|fonts\.google\.com)\//i.test(trimmed)) {
+        return `https://${trimmed}`;
+    }
+    return trimmed;
+}
+function normalizeFontLabel(label: string): string {
+    return label.replace(/\+/g, " ").replace(/\s+/g, " ").trim();
+}
+function slugifyFontLabel(label: string): string {
+    return label.toLowerCase().replace(/[^a-z0-9]+/g, "-").replace(/^-+|-+$/g, "") || "font";
+}
+function toFontFamilyCss(label: string): string {
+    const escapedLabel = label.replace(/\\/g, "\\\\").replace(/"/g, '\\"');
+    return `"${escapedLabel}", system-ui, sans-serif`;
+}
+function buildGoogleFontsCssUrl(label: string): string {
+    const url = new URL("https://fonts.googleapis.com/css2");
+    url.searchParams.set("family", label);
+    url.searchParams.set("display", "swap");
+    return url.toString();
+}
+function extractSpecimenFontLabel(parsed: URL): string {
+    const segments = parsed.pathname.split("/").filter(Boolean);
+    const specimenIndex = segments.findIndex((segment) => segment.toLowerCase() === "specimen");
+    const specimenName = specimenIndex >= 0 ? segments[specimenIndex + 1] : "";
+    return normalizeFontLabel(decodeURIComponent(specimenName || ""));
+}
+function normalizeGoogleFontCssUrl(rawUrl: string): string | null {
+    try {
+        const parsed = new URL(coerceGoogleFontUrl(extractGoogleFontInputUrl(rawUrl)));
+        if (parsed.protocol !== "https:") {
+            return null;
+        }
+        if (parsed.hostname === GOOGLE_FONTS_SPECIMEN_HOST) {
+            const label = extractSpecimenFontLabel(parsed);
+            return label ? buildGoogleFontsCssUrl(label) : null;
+        }
+        if (parsed.hostname !== GOOGLE_FONTS_CSS_HOST ||
+            (parsed.pathname !== "/css" && parsed.pathname !== "/css2")) {
+            return null;
+        }
+        if (parsed.searchParams.getAll("family").length === 0) {
+            return null;
+        }
+        if (!parsed.searchParams.has("display")) {
+            parsed.searchParams.set("display", "swap");
+        }
+        return parsed.toString();
+    }
+    catch {
+        return null;
+    }
+}
+export function parseGoogleFontUrl(rawUrl: string): CustomFontOption | null {
+    const normalizedUrl = normalizeGoogleFontCssUrl(rawUrl);
+    if (!normalizedUrl) {
+        return null;
+    }
+    const parsed = new URL(normalizedUrl);
+    const family = parsed.searchParams.getAll("family")[0];
+    const label = normalizeFontLabel((family || "").split(":")[0] || "");
+    if (!label) {
+        return null;
+    }
+    return {
+        value: `custom-${slugifyFontLabel(label)}` as CustomFontFamily,
+        label,
+        fontFamily: toFontFamilyCss(label),
+        url: normalizedUrl,
+    };
+}
+function normalizeCustomFonts(customFonts: unknown): CustomFontOption[] {
+    if (!Array.isArray(customFonts)) {
+        return [];
+    }
+    const normalizedFonts: CustomFontOption[] = [];
+    const seenValues = new Set<string>();
+    const seenUrls = new Set<string>();
+    for (const item of customFonts) {
+        if (!item || typeof item !== "object") {
+            continue;
+        }
+        const rawUrl = (item as {
+            url?: unknown;
+        }).url;
+        if (typeof rawUrl !== "string") {
+            continue;
+        }
+        const parsed = parseGoogleFontUrl(rawUrl);
+        if (!parsed || seenValues.has(parsed.value) || seenUrls.has(parsed.url)) {
+            continue;
+        }
+        seenValues.add(parsed.value);
+        seenUrls.add(parsed.url);
+        normalizedFonts.push(parsed);
+    }
+    return normalizedFonts;
+}
+function normalizeFontFamily(fontFamily: unknown, customFonts: CustomFontOption[]): FontFamily {
+    if (typeof fontFamily !== "string") {
+        return DEFAULT_SETTINGS.fontFamily;
+    }
+    if (BUILT_IN_FONT_VALUES.has(fontFamily as BuiltInFontFamily)) {
+        return fontFamily as BuiltInFontFamily;
+    }
+    const customFont = customFonts.find((font) => font.value === fontFamily);
+    return customFont ? customFont.value : DEFAULT_SETTINGS.fontFamily;
+}
+export function getFontOptions(customFonts: CustomFontOption[] = []): FontOption[] {
+    return [...FONT_OPTIONS, ...normalizeCustomFonts(customFonts)];
+}
+export function loadGoogleFontUrl(url: string, id = `${GOOGLE_FONT_LINK_ID_PREFIX}preview`): void {
+    const normalizedUrl = normalizeGoogleFontCssUrl(url);
+    if (!normalizedUrl) {
+        return;
+    }
+    let link = document.getElementById(id) as HTMLLinkElement | null;
+    if (!link) {
+        link = document.createElement("link");
+        link.id = id;
+        link.rel = "stylesheet";
+        document.head.appendChild(link);
+    }
+    if (link.href !== normalizedUrl) {
+        link.href = normalizedUrl;
+    }
+}
+function loadCustomFontStylesheets(customFonts: CustomFontOption[]): void {
+    for (const font of normalizeCustomFonts(customFonts)) {
+        loadGoogleFontUrl(font.url, `${GOOGLE_FONT_LINK_ID_PREFIX}${font.value}`);
+    }
+}
+export function applyFont(fontFamily: FontFamily, customFonts: CustomFontOption[] = []): void {
+    const fontOptions = getFontOptions(customFonts);
+    loadCustomFontStylesheets(customFonts);
+    const font = fontOptions.find((option) => option.value === fontFamily) ||
+        FONT_OPTIONS.find((option) => option.value === DEFAULT_SETTINGS.fontFamily);
     if (font) {
-        document.documentElement.style.setProperty('--font-sans', font.fontFamily);
+        document.documentElement.style.setProperty("--font-sans", font.fontFamily);
         document.body.style.fontFamily = font.fontFamily;
     }
 }
+async function persistCustomFontsInternal(customFonts: CustomFontOption[]): Promise<CustomFontOption[]> {
+    const normalizedFonts = normalizeCustomFonts(customFonts);
+    await SaveFontsToBackend(normalizedFonts as unknown as Array<Record<string, unknown>>);
+    if (cachedSettings) {
+        cachedSettings = toNormalizedSettings({
+            ...cachedSettings,
+            customFonts: normalizedFonts,
+        });
+        localStorage.setItem(SETTINGS_KEY, JSON.stringify(cachedSettings));
+        window.dispatchEvent(new CustomEvent("settingsUpdated", { detail: cachedSettings }));
+    }
+    return normalizedFonts;
+}
+async function loadStoredCustomFonts(fallbackFonts?: unknown): Promise<CustomFontOption[]> {
+    try {
+        const storedFonts = await LoadFontsFromBackend();
+        if (storedFonts !== null) {
+            return normalizeCustomFonts(storedFonts);
+        }
+    }
+    catch (error) {
+        console.error("Failed to load custom fonts:", error);
+    }
+    const migratedFonts = normalizeCustomFonts(fallbackFonts);
+    if (migratedFonts.length > 0) {
+        try {
+            return await persistCustomFontsInternal(migratedFonts);
+        }
+        catch (error) {
+            console.error("Failed to migrate custom fonts:", error);
+        }
+    }
+    return migratedFonts;
+}
+export async function loadCustomFonts(): Promise<CustomFontOption[]> {
+    return loadStoredCustomFonts(getSettings().customFonts);
+}
+export async function saveCustomFonts(customFonts: CustomFontOption[]): Promise<CustomFontOption[]> {
+    return persistCustomFontsInternal(customFonts);
+}
+function keepKnownSettings(settings: SettingsPayload): SettingsPayload {
+    const normalized: Record<string, unknown> = {};
+    for (const key of KNOWN_SETTINGS_KEYS) {
+        if (key in settings) {
+            normalized[key] = settings[key];
+        }
+    }
+    return normalized as SettingsPayload;
+}
+function normalizePreviewVolume(volume: unknown): number {
+    const parsed = typeof volume === "number"
+        ? volume
+        : typeof volume === "string"
+            ? Number.parseFloat(volume)
+            : Number.NaN;
+    if (!Number.isFinite(parsed)) {
+        return DEFAULT_SETTINGS.previewVolume;
+    }
+    return Math.min(100, Math.max(0, Math.round(parsed)));
+}
+function normalizeCustomTidalApi(value: unknown): string {
+    return typeof value === "string"
+        ? value.trim().replace(/\/+$/g, "")
+        : "";
+}
+function normalizeExistingFileCheckMode(mode: unknown): ExistingFileCheckMode {
+    switch (typeof mode === "string" ? mode.trim().toLowerCase() : "") {
+        case "isrc":
+        case "upc":
+            return "isrc";
+        default:
+            return "filename";
+    }
+}
+function normalizeSettingsPayload(settings: SettingsPayload): SettingsPayload {
+    const normalized: SettingsPayload = { ...settings };
+    if ("darkMode" in normalized && !("themeMode" in normalized)) {
+        normalized.themeMode = normalized.darkMode ? "dark" : "light";
+        delete normalized.darkMode;
+    }
+    if (!("folderPreset" in normalized) &&
+        ("artistSubfolder" in normalized || "albumSubfolder" in normalized)) {
+        const hasArtist = Boolean(normalized.artistSubfolder);
+        const hasAlbum = Boolean(normalized.albumSubfolder);
+        if (hasArtist && hasAlbum) {
+            normalized.folderPreset = "artist-album";
+            normalized.folderTemplate = "{artist}/{album}";
+        }
+        else if (hasArtist) {
+            normalized.folderPreset = "artist";
+            normalized.folderTemplate = "{artist}";
+        }
+        else if (hasAlbum) {
+            normalized.folderPreset = "album";
+            normalized.folderTemplate = "{album}";
+        }
+        else {
+            normalized.folderPreset = "none";
+            normalized.folderTemplate = "";
+        }
+    }
+    if (!("filenamePreset" in normalized) && "filenameFormat" in normalized) {
+        const format = normalized.filenameFormat;
+        if (format === "title-artist") {
+            normalized.filenamePreset = "artist-title";
+            normalized.filenameTemplate = "{artist} - {title}";
+        }
+        else if (format === "artist-title") {
+            normalized.filenamePreset = "artist-title";
+            normalized.filenameTemplate = "{artist} - {title}";
+        }
+        else {
+            normalized.filenamePreset = "title";
+            normalized.filenameTemplate = "{title}";
+        }
+    }
+    delete normalized.tidalVariant;
+    if (!("tidalQuality" in normalized)) {
+        normalized.tidalQuality = "LOSSLESS";
+    }
+    if (!("qobuzQuality" in normalized)) {
+        normalized.qobuzQuality = "6";
+    }
+    if (!("amazonQuality" in normalized)) {
+        normalized.amazonQuality = "original";
+    }
+    if (!("autoOrder" in normalized)) {
+        normalized.autoOrder = "tidal-qobuz-amazon";
+    }
+    if (!("autoQuality" in normalized)) {
+        normalized.autoQuality = "16";
+    }
+    normalized.customTidalApi = normalizeCustomTidalApi(normalized.customTidalApi);
+    if (!("allowFallback" in normalized)) {
+        normalized.allowFallback = true;
+    }
+    if (!("linkResolver" in normalized)) {
+        normalized.linkResolver = "songlink";
+    }
+    if (!("allowResolverFallback" in normalized)) {
+        normalized.allowResolverFallback = true;
+    }
+    if (!("createPlaylistFolder" in normalized)) {
+        normalized.createPlaylistFolder = true;
+    }
+    if (!("playlistOwnerFolderName" in normalized)) {
+        normalized.playlistOwnerFolderName = false;
+    }
+    if (!("createM3u8File" in normalized)) {
+        normalized.createM3u8File = false;
+    }
+    normalized.previewVolume = normalizePreviewVolume(normalized.previewVolume);
+    normalized.existingFileCheckMode = normalizeExistingFileCheckMode(normalized.existingFileCheckMode);
+    if (!("useFirstArtistOnly" in normalized)) {
+        normalized.useFirstArtistOnly = false;
+    }
+    if (!("useSingleGenre" in normalized)) {
+        normalized.useSingleGenre = false;
+    }
+    if (!("embedGenre" in normalized)) {
+        normalized.embedGenre = false;
+    }
+    if (!("separator" in normalized)) {
+        normalized.separator = "semicolon";
+    }
+    if (!("redownloadWithSuffix" in normalized)) {
+        normalized.redownloadWithSuffix = false;
+    }
+    normalized.operatingSystem = detectOS();
+    const normalizedCustomFonts = normalizeCustomFonts(normalized.customFonts);
+    normalized.customFonts = normalizedCustomFonts;
+    normalized.fontFamily = normalizeFontFamily(normalized.fontFamily, normalizedCustomFonts);
+    return normalized;
+}
+function toNormalizedSettings(settings: SettingsPayload): Settings {
+    return {
+        ...DEFAULT_SETTINGS,
+        ...keepKnownSettings(normalizeSettingsPayload(settings)),
+    } as Settings;
+}
+async function persistSettingsInternal(settings: Settings, notify = true): Promise<void> {
+    cachedSettings = settings;
+    localStorage.setItem(SETTINGS_KEY, JSON.stringify(settings));
+    const settingsForBackend = { ...settings } as Record<string, unknown>;
+    delete settingsForBackend.customFonts;
+    await SaveToBackend(settingsForBackend);
+    if (notify) {
+        window.dispatchEvent(new CustomEvent("settingsUpdated", { detail: settings }));
+    }
+}
 async function fetchDefaultPath(): Promise<string> {
     try {
         const data = await GetDefaults();
@@ -165,87 +656,11 @@ async function fetchDefaultPath(): Promise<string> {
         return "";
     }
 }
-const SETTINGS_KEY = "spotiflac-settings";
-let cachedSettings: Settings | null = null;
 function getSettingsFromLocalStorage(): Settings {
     try {
         const stored = localStorage.getItem(SETTINGS_KEY);
         if (stored) {
-            const parsed = JSON.parse(stored);
-            if ('darkMode' in parsed && !('themeMode' in parsed)) {
-                parsed.themeMode = parsed.darkMode ? 'dark' : 'light';
-                delete parsed.darkMode;
-            }
-            if (!('folderPreset' in parsed) && ('artistSubfolder' in parsed || 'albumSubfolder' in parsed)) {
-                const hasArtist = parsed.artistSubfolder;
-                const hasAlbum = parsed.albumSubfolder;
-                if (hasArtist && hasAlbum) {
-                    parsed.folderPreset = "artist-album";
-                    parsed.folderTemplate = "{artist}/{album}";
-                }
-                else if (hasArtist) {
-                    parsed.folderPreset = "artist";
-                    parsed.folderTemplate = "{artist}";
-                }
-                else if (hasAlbum) {
-                    parsed.folderPreset = "album";
-                    parsed.folderTemplate = "{album}";
-                }
-                else {
-                    parsed.folderPreset = "none";
-                    parsed.folderTemplate = "";
-                }
-            }
-            if (!('filenamePreset' in parsed) && 'filenameFormat' in parsed) {
-                const format = parsed.filenameFormat;
-                if (format === "title-artist") {
-                    parsed.filenamePreset = "artist-title";
-                    parsed.filenameTemplate = "{artist} - {title}";
-                }
-                else if (format === "artist-title") {
-                    parsed.filenamePreset = "artist-title";
-                    parsed.filenameTemplate = "{artist} - {title}";
-                }
-                else {
-                    parsed.filenamePreset = "title";
-                    parsed.filenameTemplate = "{title}";
-                }
-            }
-            parsed.operatingSystem = detectOS();
-            if (!('tidalQuality' in parsed)) {
-                parsed.tidalQuality = "LOSSLESS";
-            }
-            if (!('qobuzQuality' in parsed)) {
-                parsed.qobuzQuality = "6";
-            }
-            if (!('amazonQuality' in parsed)) {
-                parsed.amazonQuality = "original";
-            }
-            if (!('autoOrder' in parsed)) {
-                parsed.autoOrder = "tidal-qobuz-amazon";
-            }
-            if (!('autoQuality' in parsed)) {
-                parsed.autoQuality = "16";
-            }
-            if (!('allowFallback' in parsed)) {
-                parsed.allowFallback = true;
-            }
-            if (!('linkResolver' in parsed)) {
-                parsed.linkResolver = "songlink";
-            }
-            if (!('allowResolverFallback' in parsed)) {
-                parsed.allowResolverFallback = true;
-            }
-            if (!('playlistOwnerFolderName' in parsed)) {
-                parsed.playlistOwnerFolderName = false;
-            }
-            if (!('separator' in parsed)) {
-                parsed.separator = "semicolon";
-            }
-            if (!('redownloadWithSuffix' in parsed)) {
-                parsed.redownloadWithSuffix = false;
-            }
-            return { ...DEFAULT_SETTINGS, ...parsed };
+            return toNormalizedSettings(JSON.parse(stored) as SettingsPayload);
         }
     }
     catch (error) {
@@ -254,105 +669,25 @@ function getSettingsFromLocalStorage(): Settings {
     return DEFAULT_SETTINGS;
 }
 export function getSettings(): Settings {
-    if (cachedSettings)
+    if (cachedSettings) {
         return cachedSettings;
+    }
     return getSettingsFromLocalStorage();
 }
 export async function loadSettings(): Promise<Settings> {
     try {
         const backendSettings = await LoadSettings();
         if (backendSettings) {
-            const parsed = backendSettings as any;
-            if ('darkMode' in parsed && !('themeMode' in parsed)) {
-                parsed.themeMode = parsed.darkMode ? 'dark' : 'light';
-                delete parsed.darkMode;
+            const parsed = backendSettings as SettingsPayload;
+            const customFonts = await loadStoredCustomFonts(parsed.customFonts);
+            cachedSettings = toNormalizedSettings({
+                ...parsed,
+                customFonts,
+            });
+            if ("customFonts" in parsed) {
+                await persistSettingsInternal(cachedSettings, false);
             }
-            if (!('folderPreset' in parsed) && ('artistSubfolder' in parsed || 'albumSubfolder' in parsed)) {
-                const hasArtist = parsed.artistSubfolder;
-                const hasAlbum = parsed.albumSubfolder;
-                if (hasArtist && hasAlbum) {
-                    parsed.folderPreset = "artist-album";
-                    parsed.folderTemplate = "{artist}/{album}";
-                }
-                else if (hasArtist) {
-                    parsed.folderPreset = "artist";
-                    parsed.folderTemplate = "{artist}";
-                }
-                else if (hasAlbum) {
-                    parsed.folderPreset = "album";
-                    parsed.folderTemplate = "{album}";
-                }
-                else {
-                    parsed.folderPreset = "none";
-                    parsed.folderTemplate = "";
-                }
-            }
-            if (!('filenamePreset' in parsed) && 'filenameFormat' in parsed) {
-                const format = parsed.filenameFormat;
-                if (format === "title-artist") {
-                    parsed.filenamePreset = "artist-title";
-                    parsed.filenameTemplate = "{artist} - {title}";
-                }
-                else if (format === "artist-title") {
-                    parsed.filenamePreset = "artist-title";
-                    parsed.filenameTemplate = "{artist} - {title}";
-                }
-                else {
-                    parsed.filenamePreset = "title";
-                    parsed.filenameTemplate = "{title}";
-                }
-            }
-            parsed.operatingSystem = detectOS();
-            if (!('tidalQuality' in parsed)) {
-                parsed.tidalQuality = "LOSSLESS";
-            }
-            if (!('qobuzQuality' in parsed)) {
-                parsed.qobuzQuality = "6";
-            }
-            if (!('amazonQuality' in parsed)) {
-                parsed.amazonQuality = "original";
-            }
-            if (!('autoOrder' in parsed)) {
-                parsed.autoOrder = "tidal-qobuz-amazon";
-            }
-            if (!('autoQuality' in parsed)) {
-                parsed.autoQuality = "16";
-            }
-            if (!('allowFallback' in parsed)) {
-                parsed.allowFallback = true;
-            }
-            if (!('linkResolver' in parsed)) {
-                parsed.linkResolver = "songlink";
-            }
-            if (!('allowResolverFallback' in parsed)) {
-                parsed.allowResolverFallback = true;
-            }
-            if (!('createPlaylistFolder' in parsed)) {
-                parsed.createPlaylistFolder = true;
-            }
-            if (!('playlistOwnerFolderName' in parsed)) {
-                parsed.playlistOwnerFolderName = false;
-            }
-            if (!('createM3u8File' in parsed)) {
-                parsed.createM3u8File = false;
-            }
-            if (!('useFirstArtistOnly' in parsed)) {
-                parsed.useFirstArtistOnly = false;
-            }
-            if (!('useSingleGenre' in parsed)) {
-                parsed.useSingleGenre = false;
-            }
-            if (!('embedGenre' in parsed)) {
-                parsed.embedGenre = false;
-            }
-            if (!('separator' in parsed)) {
-                parsed.separator = "semicolon";
-            }
-            if (!('redownloadWithSuffix' in parsed)) {
-                parsed.redownloadWithSuffix = false;
-            }
-            cachedSettings = { ...DEFAULT_SETTINGS, ...parsed };
-            return cachedSettings!;
+            return cachedSettings;
         }
     }
     catch (error) {
@@ -360,12 +695,19 @@ export async function loadSettings(): Promise<Settings> {
     }
     const local = getSettingsFromLocalStorage();
     try {
-        await SaveToBackend(local as any);
-        cachedSettings = local;
+        const customFonts = await loadStoredCustomFonts(local.customFonts);
+        const localWithFonts = toNormalizedSettings({
+            ...local,
+            customFonts,
+        });
+        await persistSettingsInternal(localWithFonts, false);
+        cachedSettings = localWithFonts;
+        return localWithFonts;
     }
     catch (error) {
         console.error("Failed to migrate settings to backend:", error);
     }
+    cachedSettings = local;
     return local;
 }
 export interface TemplateData {
@@ -381,8 +723,9 @@ export interface TemplateData {
     playlist?: string;
 }
 export function parseTemplate(template: string, data: TemplateData): string {
-    if (!template)
+    if (!template) {
         return "";
+    }
     let result = template;
     result = result.replace(/\{title\}/g, data.title || "Unknown Title");
     result = result.replace(/\{artist\}/g, data.artist || "Unknown Artist");
@@ -406,10 +749,8 @@ export async function getSettingsWithDefaults(): Promise<Settings> {
 }
 export async function saveSettings(settings: Settings): Promise<void> {
     try {
-        cachedSettings = settings;
-        localStorage.setItem(SETTINGS_KEY, JSON.stringify(settings));
-        await SaveToBackend(settings as any);
-        window.dispatchEvent(new CustomEvent('settingsUpdated', { detail: settings }));
+        const normalizedSettings = toNormalizedSettings(settings as SettingsPayload);
+        await persistSettingsInternal(normalizedSettings);
     }
     catch (error) {
         console.error("Failed to save settings:", error);
@@ -423,7 +764,12 @@ export async function updateSettings(partial: Partial<Settings>): Promise<Settin
 }
 export async function resetToDefaultSettings(): Promise<Settings> {
     const defaultPath = await fetchDefaultPath();
-    const defaultSettings = { ...DEFAULT_SETTINGS, downloadPath: defaultPath };
+    const customFonts = await loadCustomFonts();
+    const defaultSettings = {
+        ...DEFAULT_SETTINGS,
+        downloadPath: defaultPath,
+        customFonts,
+    };
     await saveSettings(defaultSettings);
     return defaultSettings;
 }

wails.json

@@ -12,7 +12,7 @@
   },
   "info": {
     "productName": "SpotiFLAC",
-    "productVersion": "7.1.4",
+    "productVersion": "7.1.6",
     "copyright": "© 2026 afkarxyz"
   },
   "wailsjsdir": "./frontend",