Actually seems it wasnt that easy im havin some problems if anyone wants to help me out,
So heres the setup:
Speaker----->>pioneer m-f10 amplifier>computer
it used to be hooked up to a fancy cd player, the amplifier used some weird wide cable to connect into it. I unplugged that(doesnt fit anywhere on the soundboard), and the amplifier has a jack titled "phones" right on the front of it, and I used a one of those headphone to headphone jacks(3.5 mm deals). No sound from comp(headphone do though), and the comp reads when i plug it in.