ok, I have xfi 5.1

http://us.creative.com/products/prod...=17751&listby=


I hook it up to my sony 5.1 system and my dvds and blu rays i play from the pc i get 5.1 but from my pc games i do not. any idea why??

http://www.sears.com/shc/s/p_10153_1...yword=sony+5.1