N70 doesn't recognize tags embeded in .mp4/.m4a (default is "mp4 ID tag") and .aac(default is "APEv2 tag"). It supports only ID3 used in mp3 and some type of aac files. Is there a way to create .mp4/.m4a files with ID3v2 or ID3v1 tags, so that artist n album info can be displayed while playing the files?

Can't u jus convert ur mp4's to mp3?