Fix mmaudio import: add MMAudio dir to sys.path in generate_mmaudio

app.py

@@ -350,6 +350,12 @@ def generate_taro(video_file, seed_val, cfg_scale, num_steps, mode,
 def generate_mmaudio(video_file, prompt, negative_prompt, seed_val,
                      cfg_strength, num_steps, duration, num_samples):
     """MMAudio: flow-matching video-to-audio, 44.1 kHz, 8 s window, text-guided."""
+    # MMAudio is a local package in ./MMAudio/ — add it to sys.path so imports work.
+    import sys as _sys, os as _os
+    _mmaudio_dir = _os.path.join(_os.path.dirname(_os.path.abspath(__file__)), "MMAudio")
+    if _mmaudio_dir not in _sys.path:
+        _sys.path.insert(0, _mmaudio_dir)
+
     import torchaudio
     from mmaudio.eval_utils        import all_model_cfg, generate, load_video, make_video
     from mmaudio.model.flow_matching   import FlowMatching