title: Cocoa way to edit id3 tag in .mp3 files?
body: <p>Is there a way to edit id3 tags in mp3 files in Cocoa way on OSX without using C lib such as taglib or id3lib?</p>
  
  <p>I've tried using AVAssets. But I just could read the tags in mp3 files, I can't write tags to mp3 files. Does it support m4a audio file only?</p>
  
  <p>I've also tried using AudioToolbox(AudioFile Get/Set Property). But I always got errors says media type is not supported.</p>