One of the great thing about my new E61 is that the built-in music player supports AAC files. So I can play all of my tracks encoded in iTunes. But the one thing the music player can’t do is to read the tags information in the m4a files. It only reads ID3 tags. After some googling, I’ve found this Windows app called mp3tags that copies the tags info in the m4a files into the ID3 tag fields, thus allowing the music player to read and displays them on the screen. But I can’t find any equivalent on the Mac. That sucks! May be it is time for me to dive into XCode and write a tag converter myself!