revert to single file for reference

app.py

@@ -53,8 +53,8 @@ with demo:
     fn=convert_voice,
     inputs=[
     gr.Audio(type='filepath'),
-    #gr.Audio(type='filepath'), 
-    gr.File(file_count="multiple", type="filepath", label="Reference Audio Files"),
+    gr.Audio(type='filepath'), 
+    #gr.File(file_count="multiple", type="filepath", label="Reference Audio Files"),
     gr.Slider(
             3,
             10,