Ok, well I ordered the Z-680 Logitech speaker system for audio on my mac.. but of course my mac only has 2 channel output and I need something to make it so I have 5.1 out... i dont care if it digital coaxial, digital optical, or the 3 separate analog outputs, just as long as it is 5.1 I know that m-audio has options for mac 5.1 but I dont have that much money to spend. But I'm not too sure if this will work or don't Do any of you guys know? Thanks .. here's the link - http://www.chiefvalue.com/app/productdetails.asp?submit=search&item=29-126-001&tab=spec