M4A and AAC are popular audio formats, especially on Apple devices, because they are supported by operating system and played well in iTunes. “I want to play iTunes music on MP3 player smoothly, how to convert iTunes M4A songs to MP3 format?” mp3 format, so that you can play the converted M4A files on any devices and media players. mp3 audio file? This article shows you the best 3 ways to convert.