fix sample rate

app.py

@@ -89,7 +89,7 @@ if vocal_file:
 mix_vocals = st.checkbox("Mix Vocals")
 if mix_vocals and st_state.vocal_audio is not None:
     # Load the vocal audio
-    vocal_audio, _ = librosa.load(vocal_file.read(), sr=sample_rate, mono=False)
+    vocal_audio, _ = librosa.load(vocal_file.read(), mono=False)
 
     # Adjust the vocal audio length to match the generated audio
     vocal_audio = librosa.util.fix_length(vocal_audio, len(st_state.audio))