I have a set of Logitech Z5500 speakers and I originally paired them with a bgears sound card with the CMI8788 chipset and used an optical cable. The sound card died on me and I'm in the process of RMAing it, but because of the holiday season will be stuck without it until January. I seem to have misplaced the regular connector wires for my speakers to...analog I guess its called? All I have is my optical cable, but my motherboard has a SPDIF plug on it which I never noticed before. I installed the motherboard's sound card drivers and plugged it into my mobo, a Gigabyte 965P-DS3 rev 3.3, the sound quality is noticably worse which I expected...but I can only get sound to play in the front two speakers. I toyed around with it but can't get it to work any other way. Does anyone have any ideas? If it matters I'm using XP x86.