Need to get them hooked up but not sure what I need. I have a 5:1 surround sound system, but what I didn't expect to see was 3 line out cords (Lime, Black, Orange)

I can use one by putting it into the headphone part on things such as laptops or TV's, but that's just one, obviously.

What the hell do I need to hook it up to the PS3? Really can't find what I need.

Will post pictures if needed.

Cheers