Not a fan of console games myself but have a PS3 downstairs for the kiddies (age 13-19). Setup includes the PS3, Sharp 1920 x 1080 Aquos TV and the Logitech 5500's. Connections are as follows, if I recall correctly as I set it up a year ago.
PS3 -> TV w/ HDMI
TV -> 5500's with TOSlink cable
Here's the issue:
1. Blue Ray movies in PS3 work well sound from 5500's is excellent (well excellent enough for a set of $250 speakers .... kids not allowed near Dad's audio system).
2. No sound at all out of 5500's during game play. Can't figure out why a BR disc thrown in the PS3 plays fine and yet a game disk produces nada.
But again ..... I don't see anything in there that would let the BR movie have sound and the game have no sound. When watching TV or watching a BR movie in the PS3 on the TV there's sound both at the TV and surround sound system. Just popping a BR disk out and popping a game disk in shouldn't require different switch settings, cables, etc I woulda thought.