Well, this didn't take much checking. First track went from 1:40 to 4:15; looks like it's some kind of full version of the song on this soundtrack. So, this one's not a reprint either... and I have a feeling none of them are (though I can only check Disgaea 1 and 2).
EDIT: It appears these were the only 2 "reprinted" Disgaea soundtracks, so there's nothing left to check I guess
