I'm still trying to get the song to play from a channel, so give me a moment, "was using (Play Music from Resource) before".
Weird. Now I'm just getting a weird constant chopy sound that sounds like the first instrument that plays.
EDIT AGAIN: Okay, it works fine now. Accidentaly clicked toggle instead of invert.
@EmperorIng360: It seems to work fine with fractions of time.