Update app.py

app.py

@@ -49,6 +49,8 @@ def synthesize(midi_file=None):
     return midi, (SAMPLE_RATE, midi_synth)
 
 def upload(midi_file=None):
+    if isinstance(midi_file, _TemporaryFileWrapper):
+        midi_file = midi_file.name
     return midi_file
 
 with gr.Blocks(title="🎹 MIDI-AudioLDM", theme=gr.themes.Base(text_size=gr.themes.sizes.text_md, font=[gr.themes.GoogleFont("Nunito Sans")])) as demo:
@@ -63,7 +65,7 @@ with gr.Blocks(title="🎹 MIDI-AudioLDM", theme=gr.themes.Base(text_size=gr.the
     with gr.Row():
         with gr.Column(variant='panel'):
             midi_synth = gr.Audio(label="synthesized midi")
-            upload_button = gr.UploadButton("Upload a MIDI File", file_types=[".mid"])
+            upload_button = gr.UploadButton("Upload a MIDI file", file_types=[".mid"])
             midi = gr.File(visible=False, value="S00.mid")
             upload_button.upload(upload, upload_button, midi)
             upload_button.upload(synthesize, upload_button, midi_synth)