I have two SPDIF inputs on the surround sound system I use for my TV, one with an optical plug and one with coax plug. But neither PS3 or x360 will use coax SPDIF outputs (to my knowledge anyway), so as you see, I might need a converter... If PS3 supports VGA out through its analog port, then I could hook it up to my PC monitor and use the optical in on the Z600 sound system instead, but that requires that the thing DOES support VGA out, which sony hasn't announced yet...
And thanks for the link btw. 80 bucks, hmm... Let's hope I won't have to buy one of these.