Update app.py

app.py

@@ -625,7 +625,7 @@ def convert_chapters_to_audio_standard_model(chapters_dir, output_audio_dir, tar
 # Define the functions to be used in the Gradio interface
 def convert_ebook_to_audio(ebook_file, target_voice_file, language, use_custom_model, custom_model_file, custom_config_file, custom_vocab_file, custom_model_url=None, progress=gr.Progress()):
     ebook_file_path = args.ebook if args.ebook else ebook_file.name
-    target_voice = target_voice_file.name if target_voice_file else None
+    target_voice = args.voice if args.voice else target_voice_file.name if target_voice_file else None
     custom_model = None