I have a 5.1 speaker system (Klipsch) connected to my SB Audigy 2zs Platinum. Windows and Creative settings are set for 5.1 sound, yet when I play any music on the pc, you can only hear out of the R and L front speakers, plus the sub. When I do diagnostic test they pass and when I do speaker test, sound is heard in all 5 speakers. I recieved a demo cd from creative with DVD audio and all 5 speakers work with it. The problem is when I play any other audio on the computer. What do I need to do to fix this?