I recently purchased a DFI Lan Party nF3 250Gb mobo, which has an nVidia nForce audio driver for the audio setup. During speaker wizard setup when it tests all the speakers with "white noise" there is sound comming from the middle speaker in 5.1. However, when I am done with setup, it says it's in 5.1...however there is no sound comming from the middle speaker. The only way I have found to get the center speaker working in 5.1 (other than by using matrix) is to turn on an option called "Environment enabled" which gives an undesired echo-like effect to all of my speakers. For reference I have the Logitech Z-5300 THX system. Any help would be appreciated - Thanks!