Update app.py

app.py

@@ -192,10 +192,10 @@ if prompt := st.chat_input("How can I help you today?"):
         st.session_state.audio = False
 
     with st.sidebar:
-        if st.button('Reference') or st.session_state.reference:
+        if st.radio('Reference') or st.session_state.reference:
             st.session_state.reference = True
             generate_pdf()
-        if st.button(':speaker:') or st.session_state.audio:
+        if st.radio(':speaker:') or st.session_state.audio:
             generate_audio()
             st.session_state.audio = True