Various UI improvements

2026-02-04 23:15:00 -05:00
parent b75bea3860
commit 424bd3fd25
9 changed files with 262 additions and 67 deletions
@@ -565,6 +565,14 @@ export default function App() {
        viewCount: s.view_count || 0,
        userId: s.user_id,
        creator: s.creator,
+        generationParams: (() => {
+          try {
+            if (!s.generation_params) return undefined;
+            return typeof s.generation_params === 'string' ? JSON.parse(s.generation_params) : s.generation_params;
+          } catch {
+            return undefined;
+          }
+        })(),
      }));

      // Preserve any generating songs that aren't in the loaded list
@@ -579,6 +587,11 @@ export default function App() {
        // Sort by creation date, newest first
        return mergedSongs.sort((a, b) => b.createdAt.getTime() - a.createdAt.getTime());
      });
+
+      // If the current selection was a temp/generating song, replace it with newest real song
+      if (selectedSong?.isGenerating || (selectedSong && !loadedSongs.some(s => s.id === selectedSong.id))) {
+        setSelectedSong(loadedSongs[0] ?? null);
+      }
    } catch (error) {
      console.error('Failed to refresh songs:', error);
    }
@@ -623,7 +636,7 @@ export default function App() {
        title: params.title,
        instrumental: params.instrumental,
        vocalLanguage: params.vocalLanguage,
-        duration: params.duration,
+        duration: params.duration && params.duration > 0 ? params.duration : undefined,
        bpm: params.bpm,
        keyScale: params.keyScale,
        timeSignature: params.timeSignature,
@@ -643,6 +656,8 @@ export default function App() {
        lmNegativePrompt: params.lmNegativePrompt,
        referenceAudioUrl: params.referenceAudioUrl,
        sourceAudioUrl: params.sourceAudioUrl,
+        referenceAudioTitle: params.referenceAudioTitle,
+        sourceAudioTitle: params.sourceAudioTitle,
        audioCodes: params.audioCodes,
        repaintingStart: params.repaintingStart,
        repaintingEnd: params.repaintingEnd,
@@ -672,6 +687,9 @@ export default function App() {
      const pollInterval = setInterval(async () => {
        try {
          const status = await generateApi.getStatus(job.jobId, token);
+          const normalizedProgress = Number.isFinite(Number(status.progress))
+            ? (Number(status.progress) > 1 ? Number(status.progress) / 100 : Number(status.progress))
+            : undefined;

          // Update queue position on the temp song
          setSongs(prev => prev.map(s => {
@@ -679,8 +697,8 @@ export default function App() {
              return {
                ...s,
                queuePosition: status.status === 'queued' ? status.queuePosition : undefined,
-                progress: status.status === 'running' ? status.progress : undefined,
-                stage: status.status === 'running' ? status.stage : undefined,
+                progress: normalizedProgress ?? s.progress,
+                stage: status.stage ?? s.stage,
              };
            }
            return s;
@@ -146,6 +146,8 @@ export const CreatePanel: React.FC<CreatePanelProps> = ({ onGenerate, isGenerati
  // Expert Parameters (now in Advanced section)
  const [referenceAudioUrl, setReferenceAudioUrl] = useState('');
  const [sourceAudioUrl, setSourceAudioUrl] = useState('');
+  const [referenceAudioTitle, setReferenceAudioTitle] = useState('');
+  const [sourceAudioTitle, setSourceAudioTitle] = useState('');
  const [audioCodes, setAudioCodes] = useState('');
  const [repaintingStart, setRepaintingStart] = useState(0);
  const [repaintingEnd, setRepaintingEnd] = useState(-1);
@@ -169,11 +171,14 @@ export const CreatePanel: React.FC<CreatePanelProps> = ({ onGenerate, isGenerati
  const [trackName, setTrackName] = useState('');
  const [completeTrackClasses, setCompleteTrackClasses] = useState('');
  const [isFormatCaption, setIsFormatCaption] = useState(false);
+  const [maxDurationWithLm, setMaxDurationWithLm] = useState(240);
+  const [maxDurationWithoutLm, setMaxDurationWithoutLm] = useState(240);

  const [isUploadingReference, setIsUploadingReference] = useState(false);
  const [isUploadingSource, setIsUploadingSource] = useState(false);
  const [uploadError, setUploadError] = useState<string | null>(null);
-  const [isFormatting, setIsFormatting] = useState(false);
+  const [isFormattingStyle, setIsFormattingStyle] = useState(false);
+  const [isFormattingLyrics, setIsFormattingLyrics] = useState(false);
  const [isDraggingFile, setIsDraggingFile] = useState(false);
  const referenceInputRef = useRef<HTMLInputElement>(null);
  const sourceInputRef = useRef<HTMLInputElement>(null);
@@ -202,10 +207,12 @@ export const CreatePanel: React.FC<CreatePanelProps> = ({ onGenerate, isGenerati
  const getAudioLabel = (url: string) => {
    try {
      const parsed = new URL(url);
-      return decodeURIComponent(parsed.pathname.split('/').pop() || parsed.hostname);
+      const name = decodeURIComponent(parsed.pathname.split('/').pop() || parsed.hostname);
+      return name.replace(/\.[^/.]+$/, '') || name;
    } catch {
      const parts = url.split('/');
-      return decodeURIComponent(parts[parts.length - 1] || url);
+      const name = decodeURIComponent(parts[parts.length - 1] || url);
+      return name.replace(/\.[^/.]+$/, '') || name;
    }
  };

@@ -275,6 +282,34 @@ export const CreatePanel: React.FC<CreatePanelProps> = ({ onGenerate, isGenerati
    };
  }, [isResizing]);

+  useEffect(() => {
+    const loadLimits = async () => {
+      try {
+        const response = await fetch('/api/generate/limits');
+        if (!response.ok) return;
+        const data = await response.json();
+        if (typeof data.max_duration_with_lm === 'number') {
+          setMaxDurationWithLm(data.max_duration_with_lm);
+        }
+        if (typeof data.max_duration_without_lm === 'number') {
+          setMaxDurationWithoutLm(data.max_duration_without_lm);
+        }
+      } catch {
+        // ignore limits fetch failures
+      }
+    };
+
+    loadLimits();
+  }, []);
+
+  const activeMaxDuration = thinking ? maxDurationWithLm : maxDurationWithoutLm;
+
+  useEffect(() => {
+    if (duration > activeMaxDuration) {
+      setDuration(activeMaxDuration);
+    }
+  }, [duration, activeMaxDuration]);
+
  useEffect(() => {
    const isFileDrag = (e: DragEvent) =>
      !!(e.dataTransfer && Array.from(e.dataTransfer.types).includes('Files'));
@@ -357,7 +392,11 @@ export const CreatePanel: React.FC<CreatePanelProps> = ({ onGenerate, isGenerati
  // Format handler - uses LLM to enhance style/lyrics and auto-fill parameters
  const handleFormat = async (target: 'style' | 'lyrics') => {
    if (!token || !style.trim()) return;
-    setIsFormatting(true);
+    if (target === 'style') {
+      setIsFormattingStyle(true);
+    } else {
+      setIsFormattingLyrics(true);
+    }
    try {
      const result = await generateApi.formatInput({
        caption: style,
@@ -389,7 +428,11 @@ export const CreatePanel: React.FC<CreatePanelProps> = ({ onGenerate, isGenerati
      console.error('Format error:', err);
      alert('Format failed. The LLM may not be available.');
    } finally {
-      setIsFormatting(false);
+      if (target === 'style') {
+        setIsFormattingStyle(false);
+      } else {
+        setIsFormattingLyrics(false);
+      }
    }
  };

@@ -445,7 +488,7 @@ export const CreatePanel: React.FC<CreatePanelProps> = ({ onGenerate, isGenerati

      // Also set as current reference/source
      const selectedTarget = target ?? audioModalTarget;
-      applyAudioTargetUrl(selectedTarget, data.track.audio_url);
+      applyAudioTargetUrl(selectedTarget, data.track.audio_url, data.track.filename);
      setShowAudioModal(false);
    } catch (err) {
      const message = err instanceof Error ? err.message : 'Upload failed';
@@ -477,7 +520,7 @@ export const CreatePanel: React.FC<CreatePanelProps> = ({ onGenerate, isGenerati
  };

  const useReferenceTrack = (track: ReferenceTrack) => {
-    applyAudioTargetUrl(audioModalTarget, track.audio_url);
+    applyAudioTargetUrl(audioModalTarget, track.audio_url, track.filename);
    setShowAudioModal(false);
    setPlayingTrackId(null);
  };
@@ -504,13 +547,16 @@ export const CreatePanel: React.FC<CreatePanelProps> = ({ onGenerate, isGenerati
    setTempAudioUrl('');
  };

-  const applyAudioTargetUrl = (target: 'reference' | 'source', url: string) => {
+  const applyAudioTargetUrl = (target: 'reference' | 'source', url: string, title?: string) => {
+    const derivedTitle = title ? title.replace(/\.[^/.]+$/, '') : getAudioLabel(url);
    if (target === 'reference') {
      setReferenceAudioUrl(url);
+      setReferenceAudioTitle(derivedTitle);
      setReferenceTime(0);
      setReferenceDuration(0);
    } else {
      setSourceAudioUrl(url);
+      setSourceAudioTitle(derivedTitle);
      setSourceTime(0);
      setSourceDuration(0);
      if (taskType === 'text2music') {
@@ -601,6 +647,8 @@ export const CreatePanel: React.FC<CreatePanelProps> = ({ onGenerate, isGenerati
        lmNegativePrompt,
        referenceAudioUrl: referenceAudioUrl.trim() || undefined,
        sourceAudioUrl: sourceAudioUrl.trim() || undefined,
+        referenceAudioTitle: referenceAudioTitle.trim() || undefined,
+        sourceAudioTitle: sourceAudioTitle.trim() || undefined,
        audioCodes: audioCodes.trim() || undefined,
        repaintingStart,
        repaintingEnd,
@@ -768,7 +816,7 @@ export const CreatePanel: React.FC<CreatePanelProps> = ({ onGenerate, isGenerati
                <input
                  type="range"
                  min="-1"
-                  max="240"
+                  max={activeMaxDuration}
                  step="5"
                  value={duration}
                  onChange={(e) => setDuration(Number(e.target.value))}
@@ -907,7 +955,7 @@ export const CreatePanel: React.FC<CreatePanelProps> = ({ onGenerate, isGenerati
                    </button>
                    <div className="flex-1 min-w-0">
                      <div className="text-xs font-medium text-zinc-800 dark:text-zinc-200 truncate mb-1.5">
-                        {getAudioLabel(referenceAudioUrl)}
+                        {referenceAudioTitle || getAudioLabel(referenceAudioUrl)}
                      </div>
                      <div className="flex items-center gap-2">
                        <span className="text-[10px] text-zinc-400 tabular-nums">{formatTime(referenceTime)}</span>
@@ -933,7 +981,7 @@ export const CreatePanel: React.FC<CreatePanelProps> = ({ onGenerate, isGenerati
                    </div>
                    <button
                      type="button"
-                      onClick={() => { setReferenceAudioUrl(''); setReferencePlaying(false); setReferenceTime(0); setReferenceDuration(0); }}
+                      onClick={() => { setReferenceAudioUrl(''); setReferenceAudioTitle(''); setReferencePlaying(false); setReferenceTime(0); setReferenceDuration(0); }}
                      className="p-1.5 rounded-full hover:bg-zinc-200 dark:hover:bg-white/10 text-zinc-400 hover:text-zinc-600 dark:hover:text-white transition-colors"
                    >
                      <svg className="w-3.5 h-3.5" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M6 18L18 6M6 6l12 12"/></svg>
@@ -960,7 +1008,7 @@ export const CreatePanel: React.FC<CreatePanelProps> = ({ onGenerate, isGenerati
                    </button>
                    <div className="flex-1 min-w-0">
                      <div className="text-xs font-medium text-zinc-800 dark:text-zinc-200 truncate mb-1.5">
-                        {getAudioLabel(sourceAudioUrl)}
+                        {sourceAudioTitle || getAudioLabel(sourceAudioUrl)}
                      </div>
                      <div className="flex items-center gap-2">
                        <span className="text-[10px] text-zinc-400 tabular-nums">{formatTime(sourceTime)}</span>
@@ -986,7 +1034,7 @@ export const CreatePanel: React.FC<CreatePanelProps> = ({ onGenerate, isGenerati
                    </div>
                    <button
                      type="button"
-                      onClick={() => { setSourceAudioUrl(''); setSourcePlaying(false); setSourceTime(0); setSourceDuration(0); }}
+                      onClick={() => { setSourceAudioUrl(''); setSourceAudioTitle(''); setSourcePlaying(false); setSourceTime(0); setSourceDuration(0); }}
                      className="p-1.5 rounded-full hover:bg-zinc-200 dark:hover:bg-white/10 text-zinc-400 hover:text-zinc-600 dark:hover:text-white transition-colors"
                    >
                      <svg className="w-3.5 h-3.5" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M6 18L18 6M6 6l12 12"/></svg>
@@ -1049,12 +1097,12 @@ export const CreatePanel: React.FC<CreatePanelProps> = ({ onGenerate, isGenerati
                    {instrumental ? 'Instrumental' : 'Vocal'}
                  </button>
                  <button
-                    className={`p-1.5 hover:bg-zinc-200 dark:hover:bg-white/10 rounded transition-colors ${isFormatting ? 'text-pink-500' : 'text-zinc-500 hover:text-black dark:hover:text-white'}`}
+                    className={`p-1.5 hover:bg-zinc-200 dark:hover:bg-white/10 rounded transition-colors ${isFormattingLyrics ? 'text-pink-500' : 'text-zinc-500 hover:text-black dark:hover:text-white'}`}
                    title="AI Format - Enhance style & auto-fill parameters"
                    onClick={() => handleFormat('lyrics')}
-                    disabled={isFormatting || !style.trim()}
+                    disabled={isFormattingLyrics || !style.trim()}
                  >
-                    {isFormatting ? <Loader2 size={14} className="animate-spin" /> : <Sparkles size={14} />}
+                    {isFormattingLyrics ? <Loader2 size={14} className="animate-spin" /> : <Sparkles size={14} />}
                  </button>
                  <button
                    className="p-1.5 hover:bg-zinc-200 dark:hover:bg-white/10 rounded text-zinc-500 hover:text-black dark:hover:text-white transition-colors"
@@ -1089,12 +1137,12 @@ export const CreatePanel: React.FC<CreatePanelProps> = ({ onGenerate, isGenerati
                  <p className="text-[11px] text-zinc-400 dark:text-zinc-500 mt-0.5">Genre, mood, instruments, vibe</p>
                </div>
                <button
-                  className={`p-1.5 hover:bg-zinc-200 dark:hover:bg-white/10 rounded transition-colors ${isFormatting ? 'text-pink-500' : 'text-zinc-500 hover:text-black dark:hover:text-white'}`}
+                  className={`p-1.5 hover:bg-zinc-200 dark:hover:bg-white/10 rounded transition-colors ${isFormattingStyle ? 'text-pink-500' : 'text-zinc-500 hover:text-black dark:hover:text-white'}`}
                  title="AI Format - Enhance style & auto-fill parameters"
                  onClick={() => handleFormat('style')}
-                  disabled={isFormatting || !style.trim()}
+                  disabled={isFormattingStyle || !style.trim()}
                >
-                  {isFormatting ? <Loader2 size={14} className="animate-spin" /> : <Sparkles size={14} />}
+                  {isFormattingStyle ? <Loader2 size={14} className="animate-spin" /> : <Sparkles size={14} />}
                </button>
              </div>
              <textarea
@@ -1258,7 +1306,7 @@ export const CreatePanel: React.FC<CreatePanelProps> = ({ onGenerate, isGenerati
              <input
                type="range"
                min="-1"
-                max="240"
+                max={activeMaxDuration}
                step="5"
                value={duration}
                onChange={(e) => setDuration(Number(e.target.value))}
@@ -1266,7 +1314,7 @@ export const CreatePanel: React.FC<CreatePanelProps> = ({ onGenerate, isGenerati
              />
              <div className="flex justify-between text-[10px] text-zinc-500">
                <span>Auto</span>
-                <span>4 min</span>
+                <span>{Math.round(activeMaxDuration / 60)} min</span>
              </div>
            </div>

@@ -43,11 +43,12 @@ export const RightSidebar: React.FC<RightSidebarProps> = ({ song, onClose, onOpe
        if (!url) return 'None';
        try {
            const parsed = new URL(url, window.location.origin);
-            const name = parsed.pathname.split('/').pop();
-            return decodeURIComponent(name || url);
+            const name = decodeURIComponent(parsed.pathname.split('/').pop() || url);
+            return name.replace(/\.[^/.]+$/, '') || name;
        } catch {
            const parts = url.split('/');
-            return decodeURIComponent(parts[parts.length - 1] || url);
+            const name = decodeURIComponent(parts[parts.length - 1] || url);
+            return name.replace(/\.[^/.]+$/, '') || name;
        }
    };

@@ -264,44 +265,44 @@ export const RightSidebar: React.FC<RightSidebarProps> = ({ song, onClose, onOpe
                                Sources
                            </div>
                            <div className="space-y-2">
-                                <div className="flex items-center justify-between gap-3 rounded-lg border border-zinc-200 dark:border-white/10 bg-white dark:bg-zinc-900/40 px-3 py-2">
-                                    <div className="flex items-center gap-2 min-w-0">
-                                        <Music size={14} className="text-zinc-400" />
-                                        <div className="min-w-0">
-                                            <div className="text-xs text-zinc-500">Reference</div>
-                                            <div className="text-sm font-medium text-zinc-900 dark:text-white truncate">
-                                                {getSourceLabel(song.generationParams?.referenceAudioUrl)}
+                                {song.generationParams?.referenceAudioUrl && (
+                                    <div className="flex items-center justify-between gap-3 rounded-lg border border-zinc-200 dark:border-white/10 bg-white dark:bg-zinc-900/40 px-3 py-2">
+                                        <div className="flex items-center gap-2 min-w-0">
+                                            <Music size={14} className="text-zinc-400" />
+                                            <div className="min-w-0">
+                                                <div className="text-xs text-zinc-500">Reference</div>
+                                                <div className="text-sm font-medium text-zinc-900 dark:text-white truncate">
+                                                    {song.generationParams?.referenceAudioTitle || getSourceLabel(song.generationParams?.referenceAudioUrl)}
+                                                </div>
                                            </div>
                                        </div>
-                                    </div>
-                                    {song.generationParams?.referenceAudioUrl && (
                                        <button
                                            className="text-xs px-2 py-1 rounded-full border border-zinc-200 dark:border-white/10 text-zinc-600 dark:text-zinc-300 hover:bg-zinc-100 dark:hover:bg-white/10 transition-colors"
                                            onClick={() => openSource(song.generationParams?.referenceAudioUrl)}
                                        >
                                            Open
                                        </button>
-                                    )}
-                                </div>
-                                <div className="flex items-center justify-between gap-3 rounded-lg border border-zinc-200 dark:border-white/10 bg-white dark:bg-zinc-900/40 px-3 py-2">
-                                    <div className="flex items-center gap-2 min-w-0">
-                                        <Layers size={14} className="text-zinc-400" />
-                                        <div className="min-w-0">
-                                            <div className="text-xs text-zinc-500">Cover</div>
-                                            <div className="text-sm font-medium text-zinc-900 dark:text-white truncate">
-                                                {getSourceLabel(song.generationParams?.sourceAudioUrl)}
+                                    </div>
+                                )}
+                                {song.generationParams?.sourceAudioUrl && (
+                                    <div className="flex items-center justify-between gap-3 rounded-lg border border-zinc-200 dark:border-white/10 bg-white dark:bg-zinc-900/40 px-3 py-2">
+                                        <div className="flex items-center gap-2 min-w-0">
+                                            <Layers size={14} className="text-zinc-400" />
+                                            <div className="min-w-0">
+                                                <div className="text-xs text-zinc-500">Cover</div>
+                                                <div className="text-sm font-medium text-zinc-900 dark:text-white truncate">
+                                                    {song.generationParams?.sourceAudioTitle || getSourceLabel(song.generationParams?.sourceAudioUrl)}
+                                                </div>
                                            </div>
                                        </div>
-                                    </div>
-                                    {song.generationParams?.sourceAudioUrl && (
                                        <button
                                            className="text-xs px-2 py-1 rounded-full border border-zinc-200 dark:border-white/10 text-zinc-600 dark:text-zinc-300 hover:bg-zinc-100 dark:hover:bg-white/10 transition-colors"
                                            onClick={() => openSource(song.generationParams?.sourceAudioUrl)}
                                        >
                                            Open
                                        </button>
-                                    )}
-                                </div>
+                                    </div>
+                                )}
                            </div>
                        </div>
                    )}
@@ -361,12 +361,22 @@ const SongItem: React.FC<SongItemProps> = ({
                                {song.progress !== undefined ? (
                                    <div
                                        className="h-full bg-gradient-to-r from-pink-500 to-purple-600 transition-all"
-                                        style={{ width: `${Math.min(100, Math.max(0, song.progress * 100))}%` }}
+                                        style={{
+                                            width: `${Math.min(
+                                                100,
+                                                Math.max(0, (song.progress > 1 ? song.progress / 100 : song.progress) * 100)
+                                            )}%`,
+                                        }}
                                    />
                                ) : (
                                    <div className="h-full w-1/3 bg-gradient-to-r from-pink-500 to-purple-600 animate-pulse" />
                                )}
                            </div>
+                            {song.progress !== undefined && (
+                                <div className="mt-1 text-[10px] text-zinc-500 dark:text-zinc-400">
+                                    {Math.round((song.progress > 1 ? song.progress / 100 : song.progress) * 100)}%
+                                </div>
+                            )}
                        </div>
                    )}
                </div>
@@ -9,6 +9,7 @@ import json
 import os
 import sys
 import time
+import torch

 # Get ACE-Step path from environment or use default
 ACESTEP_PATH = os.environ.get('ACESTEP_PATH', '/home/ambsd/Desktop/aceui/ACE-Step-1.5')
@@ -27,11 +28,17 @@ _llm_handler = None
 def get_handlers():
    global _handler, _llm_handler
    if _handler is None:
+        if torch.cuda.is_available():
+            device = "cuda"
+        elif torch.backends.mps.is_available():
+            device = "mps"
+        else:
+            device = "cpu"
        _handler = AceStepHandler()
        _handler.initialize_service(
            project_root=ACESTEP_PATH,
            config_path="acestep-v15-turbo",
-            device="cuda",
+            device=device,
            offload_to_cpu=True,  # For 12GB GPU
        )
        _llm_handler = LLMHandler()  # Create but don't initialize (not enough VRAM)
@@ -96,6 +96,8 @@ interface GenerateBody {
  // Expert Parameters
  referenceAudioUrl?: string;
  sourceAudioUrl?: string;
+  referenceAudioTitle?: string;
+  sourceAudioTitle?: string;
  audioCodes?: string;
  repaintingStart?: number;
  repaintingEnd?: number;
@@ -196,6 +198,8 @@ router.post('/', authMiddleware, async (req: AuthenticatedRequest, res: Response
      lmNegativePrompt,
      referenceAudioUrl,
      sourceAudioUrl,
+      referenceAudioTitle,
+      sourceAudioTitle,
      audioCodes,
      repaintingStart,
      repaintingEnd,
@@ -259,6 +263,8 @@ router.post('/', authMiddleware, async (req: AuthenticatedRequest, res: Response
      lmNegativePrompt,
      referenceAudioUrl,
      sourceAudioUrl,
+      referenceAudioTitle,
+      sourceAudioTitle,
      audioCodes,
      repaintingStart,
      repaintingEnd,
@@ -547,6 +553,60 @@ router.get('/health', async (_req, res: Response) => {
  }
 });

+router.get('/limits', async (_req, res: Response) => {
+  try {
+    const { spawn } = await import('child_process');
+    const ACESTEP_DIR = process.env.ACESTEP_PATH || path.resolve(path.dirname(fileURLToPath(import.meta.url)), '../../../../ACE-Step-1.5');
+    const __filename = fileURLToPath(import.meta.url);
+    const __dirname = path.dirname(__filename);
+    const SCRIPTS_DIR = path.join(__dirname, '../../scripts');
+    const LIMITS_SCRIPT = path.join(SCRIPTS_DIR, 'get_limits.py');
+    const pythonPath = resolvePythonPath(ACESTEP_DIR);
+
+    const result = await new Promise<{ success: boolean; data?: any; error?: string }>((resolve) => {
+      const proc = spawn(pythonPath, [LIMITS_SCRIPT], {
+        cwd: ACESTEP_DIR,
+        env: {
+          ...process.env,
+          ACESTEP_PATH: ACESTEP_DIR,
+        },
+      });
+
+      let stdout = '';
+      let stderr = '';
+
+      proc.stdout.on('data', (data) => { stdout += data.toString(); });
+      proc.stderr.on('data', (data) => { stderr += data.toString(); });
+
+      proc.on('close', (code) => {
+        if (code === 0 && stdout) {
+          try {
+            const parsed = JSON.parse(stdout);
+            resolve({ success: true, data: parsed });
+          } catch {
+            resolve({ success: false, error: 'Failed to parse limits result' });
+          }
+        } else {
+          resolve({ success: false, error: stderr || 'Failed to read limits' });
+        }
+      });
+
+      proc.on('error', (err) => {
+        resolve({ success: false, error: err.message });
+      });
+    });
+
+    if (result.success && result.data) {
+      res.json(result.data);
+    } else {
+      res.status(500).json({ error: result.error || 'Failed to load limits' });
+    }
+  } catch (error) {
+    console.error('Limits error:', error);
+    res.status(500).json({ error: (error as Error).message });
+  }
+});
+
 router.get('/debug/:taskId', authMiddleware, async (req: AuthenticatedRequest, res: Response) => {
  try {
    const rawResponse = getJobRawResponse(req.params.taskId);
@@ -125,7 +125,6 @@ async function submitToApi(params: GenerationParams): Promise<{ taskId: string }
  const body: Record<string, unknown> = {
    prompt,
    lyrics,
-    audio_duration: params.duration ?? 60,
    batch_size: params.batchSize ?? 1,
    inference_steps: params.inferenceSteps ?? 8,
    guidance_scale: params.guidanceScale ?? 10.0,
@@ -139,6 +138,7 @@ async function submitToApi(params: GenerationParams): Promise<{ taskId: string }
    use_cot_metas: false, // Explicitly disable CoT features that require LLM
  };

+  if (params.duration && params.duration > 0) body.audio_duration = params.duration;
  if (params.bpm && params.bpm > 0) body.bpm = params.bpm;
  if (params.keyScale) body.key_scale = params.keyScale;
  if (params.timeSignature) body.time_signature = params.timeSignature;
@@ -166,20 +166,42 @@ async function submitToApi(params: GenerationParams): Promise<{ taskId: string }
  if (params.cfgIntervalStart !== undefined && params.cfgIntervalStart > 0) body.cfg_interval_start = params.cfgIntervalStart;
  if (params.cfgIntervalEnd !== undefined && params.cfgIntervalEnd < 1.0) body.cfg_interval_end = params.cfgIntervalEnd;

+  const resolveAudioPath = (audioUrl: string): string => {
+    if (audioUrl.startsWith('/audio/')) {
+      return path.join(AUDIO_DIR, audioUrl.replace('/audio/', ''));
+    }
+    if (audioUrl.startsWith('http')) {
+      try {
+        const parsed = new URL(audioUrl);
+        if (parsed.pathname.startsWith('/audio/')) {
+          return path.join(AUDIO_DIR, parsed.pathname.replace('/audio/', ''));
+        }
+      } catch {
+        // fall through
+      }
+    }
+    return audioUrl;
+  };
+
+  // Guard: cover/audio2audio requires a source or audio codes
+  if ((params.taskType === 'cover' || params.taskType === 'audio2audio') && !params.sourceAudioUrl && !params.audioCodes) {
+    throw new Error(`task_type='${params.taskType}' requires a source audio or audio codes`);
+  }
+
  // Handle reference audio - need to pass file path
  if (params.referenceAudioUrl) {
-    let refAudioPath = params.referenceAudioUrl;
-    if (refAudioPath.startsWith('/audio/')) {
-      refAudioPath = path.join(AUDIO_DIR, refAudioPath.replace('/audio/', ''));
-    }
-    body.reference_audio_path = refAudioPath;
+    body.reference_audio_path = resolveAudioPath(params.referenceAudioUrl);
  }
  if (params.sourceAudioUrl) {
-    let srcAudioPath = params.sourceAudioUrl;
-    if (srcAudioPath.startsWith('/audio/')) {
-      srcAudioPath = path.join(AUDIO_DIR, srcAudioPath.replace('/audio/', ''));
-    }
-    body.src_audio_path = srcAudioPath;
+    body.src_audio_path = resolveAudioPath(params.sourceAudioUrl);
+  }
+
+  if (params.taskType === 'cover' || params.taskType === 'audio2audio') {
+    console.log(`[ACE-Step] cover/audio2audio inputs`, {
+      reference_audio_path: body.reference_audio_path,
+      src_audio_path: body.src_audio_path,
+      has_audio_codes: Boolean(params.audioCodes),
+    });
  }

  const response = await fetch(`${ACESTEP_API}/release_task`, {
@@ -263,6 +285,20 @@ async function pollApiResult(taskId: string, maxWaitMs = 600000): Promise<ApiTas
      throw new Error(`Generation failed on API side: ${details}`);
    }

+    // Log progress while processing (if provided)
+    if (taskData.result) {
+      try {
+        const resultData = typeof taskData.result === 'string' ? JSON.parse(taskData.result) : taskData.result;
+        const item = Array.isArray(resultData) ? resultData[0] : resultData;
+        if (item && typeof item === 'object' && typeof (item as any).progress === 'number') {
+          const pct = Math.round((item as any).progress * 100);
+          console.log(`[ACE-Step] API task ${taskId} progress: ${pct}%`);
+        }
+      } catch {
+        // ignore parse failures
+      }
+    }
+
    // Still processing
    await new Promise(resolve => setTimeout(resolve, pollInterval));
  }
@@ -349,6 +385,8 @@ export interface GenerationParams {
  // Expert Parameters
  referenceAudioUrl?: string;
  sourceAudioUrl?: string;
+  referenceAudioTitle?: string;
+  sourceAudioTitle?: string;
  audioCodes?: string;
  repaintingStart?: number;
  repaintingEnd?: number;
@@ -403,6 +441,8 @@ interface ActiveJob {
  processPromise?: Promise<void>;
  rawResponse?: unknown;
  queuePosition?: number;
+  progress?: number;
+  stage?: string;
 }

 const activeJobs = new Map<string, ActiveJob>();
@@ -466,6 +506,8 @@ async function processQueue(): Promise<void> {

 // Submit generation job to queue
 export async function generateMusicViaAPI(params: GenerationParams): Promise<{ jobId: string }> {
+  // Force a fresh API availability check when starting a job
+  resetApiCache();
  const jobId = `job_${Date.now()}_${Math.random().toString(36).slice(2, 9)}`;

  const job: ActiveJob = {
@@ -573,9 +615,10 @@ async function processGeneration(
    const jobOutputDir = path.join(ACESTEP_DIR, 'output', jobId);
    await mkdir(jobOutputDir, { recursive: true });

+    const durationToSend = params.duration && params.duration > 0 ? params.duration : 60;
    const args = [
      '--prompt', prompt,
-      '--duration', String(params.duration ?? 60),
+      '--duration', String(durationToSend),
      '--batch-size', String(params.batchSize ?? 1),
      '--infer-steps', String(params.inferenceSteps ?? 8),
      '--guidance-scale', String(params.guidanceScale ?? 10.0),
@@ -701,7 +744,6 @@ function runPythonGeneration(scriptArgs: string[]): Promise<PythonResult> {
      cwd: ACESTEP_DIR,
      env: {
        ...process.env,
-        CUDA_VISIBLE_DEVICES: '0',
        ACESTEP_PATH: ACESTEP_DIR,
      },
    });
@@ -863,13 +905,16 @@ export async function getJobStatus(jobId: string): Promise<JobStatus> {

          const item = Array.isArray(resultData) ? resultData[0] : resultData;
          if (item && typeof item === 'object') {
-            const progress = typeof (item as any).progress === 'number' ? (item as any).progress : undefined;
+            const rawProgress = (item as any).progress;
+            const progress = Number.isFinite(Number(rawProgress)) ? Number(rawProgress) : undefined;
            const stage = typeof (item as any).stage === 'string' ? (item as any).stage : undefined;
+            if (progress !== undefined) job.progress = progress;
+            if (stage) job.stage = stage;
            return {
              status: job.status,
              etaSeconds: Math.max(0, 180 - elapsed),
-              progress,
-              stage,
+              progress: progress ?? job.progress,
+              stage: stage ?? job.stage,
            };
          }
        }
@@ -882,6 +927,8 @@ export async function getJobStatus(jobId: string): Promise<JobStatus> {
  return {
    status: job.status,
    etaSeconds: Math.max(0, 180 - elapsed), // 3 min estimate
+    progress: job.progress,
+    stage: job.stage,
  };
 }

@@ -237,6 +237,8 @@ export interface GenerationParams {
  // Expert Parameters
  referenceAudioUrl?: string;
  sourceAudioUrl?: string;
+  referenceAudioTitle?: string;
+  sourceAudioTitle?: string;
  audioCodes?: string;
  repaintingStart?: number;
  repaintingEnd?: number;
@@ -90,6 +90,8 @@ export interface GenerationParams {
  // Expert Parameters
  referenceAudioUrl?: string;
  sourceAudioUrl?: string;
+  referenceAudioTitle?: string;
+  sourceAudioTitle?: string;
  audioCodes?: string;
  repaintingStart?: number;
  repaintingEnd?: number;