Hey, I have Logitech 5.1 surround speakers. I want true surround out of them..even though they're in matrix mode since I can't get them in back of me...but whatever...so I read about the optical port in the headphone/audio out jack. If I use that, I've searched high and low, is there anyway to get from the optical 5.1 out in the MBP to the orange/green/black cables on my 5.1 speakers? (the orange/green/black 1/8" inputs seem to be the standard for computer 5.1) I've found everything including exporting the sound through firewire cables to exernal sound cards, but they seem to have an optical to red/white (right left) stereo audio (RCA inputs) - is there something like that for the orange/green/black of computer 5.1 surround with 1/8" plugs? I couldn't find anything regarding it via google, and the apple store doesn't appear to have one. Thanks in advance. PS: Yes, I searched.