Update app_multi.py

app_multi.py

@@ -414,14 +414,14 @@ def youtube_downloader(
     video_identifier,
     start_time,
     end_time,
+    is_full_song,
     output_filename="track.wav",
     num_attempts=5,
     url_base="",
     quiet=False,
     force=True,
-    full_song=True,
 ):
-    if full_song:
+    if is_full_song:
         ydl_opts = {
             'noplaylist': True,
             'format': 'bestaudio/best',