Update src/streamlit_app.py

src/streamlit_app.py

@@ -29,13 +29,14 @@ class Interface:
         st.info(description)
 
     @staticmethod
-    def get_audio_file() -> str:
+    def get_audio_file():
         uploaded_file = st.file_uploader("Choose an audio file", type=["wav"], help="Upload a .wav audio file.")
-        if uploaded_file and uploaded_file.name.endswith(".wav"):
-            st.audio(uploaded_file, format="audio/wav")
-            return uploaded_file
-        elif uploaded_file:
-            st.warning("Please upload a valid .wav audio file.")
+        if uploaded_file is not None:
+            if uploaded_file.name.endswith(".wav"):
+                st.audio(uploaded_file, format="audio/wav")
+                return uploaded_file  # Return UploadedFile, not str
+            else:
+                st.warning("Please upload a valid .wav audio file.")
         return None
 
     @staticmethod