What my question is, if I wanted to connect both my Xbox 360 AND my PS3, video I can just use a multi-port HDMI switch, but is there anything like that for the audio cables???
I think you would have to buy a couple of RCA (red and white cable) splitters (link), and some extra RCA leads. Then you would stick the doubler in the PC sound adaptor you already have, and run the PS3 cables and the 360 cables into them. I'd put both reds into one side and the whites into the other.
You may lose a little sound quality but that would be the easiest and cheapest way to do it.
EDIT: Actually, you wouldn't need any extra leads...don't know why I said that you would :s.
