I've used Doubletwist, Winamp, PowerAMP, and a tag editor to see what wrong, all do the same thing, can't figure it out, and the SGS2 guide it says plays .m4a's but its the only android phone I've seen this on?
I don't know, but I'm hoping it's easily fixed... I've just sold my iPod Touch so I can use the SGSII as my music player when I get it! Ripped some of my favourite CDs to .flac as well for the best music quality
Just got my SGSII yesterday... my m4a tags are fine! Not sure what's happening with yours D:
EDIT: I was totally wrong, the artist didn't show up. Luckily I had like one album in m4a format, so I changed it to mp3 and everything's fine now! Just missing a few album arts here and there, but I think that's more a Winamp problem than a problem with the SGSII
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer?