There is a case when some audio files are made for a specific device then you cannot run that file on another device at that time, also you need to convert the file. You need to convert the file to play it if your player does not support a single type of audio file. This thing can happen to any kind of audio file, whether it is a music file or a recorded voice. At this time, you need to convert the file into the required file format to listen to the music.
But sometimes there are music files that cannot be played on your phone or computer because the music player does not support the file format. If you are traveling you can listen to music, if you are commuting, you can listen to music. Everybody loves to listen to music regardless of time and location.