add midi download button

app.py

@@ -39,7 +39,7 @@ def inference(file_up, composer):
         save_mix=True,
     )
 
-    return mix_path
+    return mix_path, midi_path
 
 
 block = gr.Blocks()
@@ -73,9 +73,11 @@ with block:
                 file_up = gr.Audio(label="Upload an audio", type="filepath")
                 composer = gr.Dropdown(label="Arranger", choices=composers, value="composer1")
                 btn = gr.Button("Convert")
-        out = gr.Audio(label="Output")
-
-        btn.click(inference, inputs=[file_up, composer], outputs=out)
+        with gr.Box():
+            with gr.Row().style(mobile_collapse=False, equal_height=True):
+                out = gr.Audio(label="Output")
+                midi_out = gr.File(label="Download Midi")
+                btn.click(inference, inputs=[file_up, composer], outputs=[out, midi_out])
         gr.HTML(
             """
         <div class="footer">