Sure, that link is broken, which isn't ideal, but the media formats supported are documented: https://developer.apple.com/library/content/documentation/MusicAu

Sure, that link is broken, which isn't ideal, but the media formats supported are documented: https://developer.apple.com/library/content/documentation/MusicAudio/Conceptual/CoreAudioOverview/CoreAudioEssentials/CoreAudioEssentials.html#//apple_ref/doc/uid/TP40003577-CH10-SW47 https://developer.apple.com/library/content/documentation/Mu... In the same document there is a section titled "Playback using the AVAudioPlayer Class". Sure, this is in the Core Audio programming guide, but AVFoundation is just a ObjC layer on top of Core Audio that provides high level functions.