actually, mp3tag seems weird too.
when i check an old file, it doesn't show "popularimeter" like it should, it shows "RATING WINAMP" for old stuff (rated pre 5.62) as well! so damnit, mp3tag is just adding to the confusion!
(RATING WINAMP is new with mp3tag 2.49)
is winamp still using POPM for id3 and RATING for vorbis?
http://forums.mp3tag.de/index.php?showtopic=13378