Have a "cheap mans" 5.1 setup "upgrade". Currently have the Logitech X-540 5.1 that has the 3x 3.5mm from sound card (Asus DX 7.1 PCIe) to X-540 setup for surround. Works great but looking to hook up a PS3 for example and its optical out only. Logitech makes a converter but its only 2.1 to all speakers since its RCA to 3x 3.5mm. Looking to do Bluray etc. Ideas!?? Tried playing it THROUGH the sound card but no dice. I'm willing to change sound cards as well as its pretty old if it supports my current setup AND can do optical out "passthrough" I guess!? Thanks! 