ok I have a ps3 and just bought a JVC RX 6030V stereo reciever for 50 bucks off a local electronics and games pawn shop type of place. I don't really know much about setting up a digital surround sound system, but I noticed it said it has support for DTS so I picked it up. In any case, I'm trying to get it setup for surround sound and saw I need an optical cable of some kind. Is there only 1 kind of cable to get? and are they expensive? I'm hoping to spend about 20 bucks and be good.