You know you've played too much FFR when..

[Shashakiro]

when you tap your fingers absentmindedly whenever you hear any piece of music (I do this)
when you spend class time trying to figure out which songs you haven't highscored (yup, did that too)
when FFR music is ALWAYS stuck in your head (oh yes)
when you've played one of the songs almost 600 times (CIA Rave)

Yeah that's all I can think of right now.