Update requirements.txt

requirements.txt

@@ -1,16 +1,19 @@
 numpy==1.23.5
 
-# Torch stack (CPU wheels; OK in ZeroGPU)
+# Torch stack (matches Audiocraft 1.3.0)
 torch==2.1.0
 torchaudio==2.1.0        --index-url https://download.pytorch.org/whl/cpu
 
-# Utilities
+# runtime-installed audiocraft needs this I/O helper
+soundfile==0.12.1        # pulls PySoundFile, CFFI; libsndfile is already in the base image
+
+# utilities
 pydub==0.25.1
 psutil==5.9.8
 
-# Web UI  (ZeroGPU needs Gradio ≥4)
+# Web UI / ZeroGPU
 gradio==4.44.1
 
-# Transformers / HF tooling
+# Transformers + hub
 transformers==4.38.2
 huggingface_hub>=0.19,<1.0