iTunes music, audiobooks, podcasts are all in M4A format. This format is supported by many devices such as iPhone, iPad and iPod Touch. However, there are still a plethora of devices which don't support M4A. Here you can follow this quick video tips to convert iTunes music, audiobooks, podcasts M4A to MP3 without any problems. Source: https://www.drmare.com/apple-music/convert-itunes-music-to-mp3.html Product: https://www.drmare.com/drm-audio-converter-for-win https://www.drmare.com/drm-audio-converter-for-mac Home: https://www.drmare.com/