Update requirements.txt

requirements.txt

@@ -1,16 +1,16 @@
 numpy==1.23.5
 
-# PyTorch audio I/O (matches the 2.5.1 torch wheel the HF build installs)
-torchaudio==2.5.1           --index-url https://download.pytorch.org/whl/cpu
-
-# MusicGen
-audiocraft==1.3.0           # runtime-installed with --no-deps in app.py
+# Torch stack (CPU wheels; OK in ZeroGPU)
+torch==2.1.0
+torchaudio==2.1.0        --index-url https://download.pytorch.org/whl/cpu
 
 # Utilities
 pydub==0.25.1
 psutil==5.9.8
 
-# UI + model hub
+# Web UI  (ZeroGPU needs Gradio ≥4)
 gradio==4.44.1
+
+# Transformers / HF tooling
 transformers==4.38.2
 huggingface_hub>=0.19,<1.0