asus a7n8x-x mobo with latest drivers/bios. it has onboard sound. i have creative 4.1 speakers but i can only get sound out of 2 front speakers and subwoofer. under control panel, sound and audio devices, volume, speaker settings, advanced, it is set to surround (shows diagram of 4 speakers and sub) and i apply this. do i need to change speaker setup to 4.1 anywhere else?