The penny drops. As the Gigaworks doesn't have a digital in, I can't connect the 360 directly to them. I'll have to use the TOSlink digital out from the 360 into a soundcard on the PC, and the PC will already be wired up to the speakers. Too bad I'll have to have the PC on whenever I want to play the 360. Will need to find a card that has a digital link in first - X-fi Titanium Fatal1ty Professional is one...