So I have been doing a lot of research on getting 5.1 for my iMac. I purchased a griffin Firewave to accomplish this. It does not seem to do 5.1 for World Of Warcraft for example or any other 5.1 enabled games. When I spin the character around I lose the voices coming from the front speakers and to the center channel. I have decided to just go ahead and get a pre-amp or a Z-5500 speaker system and hook it up with the optical. I want to make sure before spending the money this will work for 5.1 games and not just movies. Anyne else have any ideas please let me know.