add songs

main.py

@@ -141,8 +141,10 @@ async def caesarmusicws(websocket: WebSocket):
             
             await websocket.send_json({"message":"all songs are downloaded"})
 
-    except ValueError as vex:
+    except (ValueError,FileNotFoundError) as vex:
         response = {"message":"No song detected","error":f"{type(vex)}{vex}"}
+        caesarmusic.clean_up_dir(download_dir,"mp3")
+        caesarmusic.clean_up_dir(download_dir,"mp4")
         await websocket.send_json(response)
     except Exception as ex:
         print("Client disconnected")