there's an error when downloading into m4a file. file attributes go blank and cannot change. even if other files have no problem with it. please fix it fast.
it went well but one day the error came. could not change the songs' attributes. like the tags about name, artist, album.. etc.
i tried on downloading mp3 file. then mp3 file is ok. i think it has problem with only m4a files. please check and fix.