hey all, ive got a macbook pro that has optical out, and a logtiech 5.1 z-680 set that has optical in. I want to conenct the MBP up to play evrything in 5.1, not just DVD's. On my Windows box, i use software called CMSS from creative to 'fake' emulate' 'upmix' my audio/video files to 5.1, what kind of software can you use for that on a Macintosh? thanks