I just realized I *really* like all of the songs in this game(except for stage 1, yuyuko, seiga, kyouko).
Most favorite... Mamizou's theme. Testicles ftw
but True Administrator, the Stage 3 theme, the Stage 5 theme, and the Stage 6 theme come in tied at second :x
The Stage 5 theme is really good, though, it needs more love
edit -- shit the extra stage theme is really good too