Hmm.... well... I have already set it to desktop stereo speakers... just for clarification, how would i do that with Windows media player?

EDIT:: Check it, heres what I'm messing around with.
I'm using Initial D 4th Stage from Aone because thats the one with the most sounds missing.
Open with windows media player, then I go to my task bar, and a little icon on my task bar next to my clock that says FFDShow audio appears. I right click that, then go to FFDShow Audo decoder, then under volume I'm messing around with those bars. I notice that SL and SR are playing but theres no sound at all, and during parts of the song, theres no vocals where there should be vocals (the karaoke is going but no voices)