I have a new intel iMac and had this Sonica Theater laying around that I had forgot about. The drivers SUCKED under Tiger and caused a WHOLE LOTTA crashing. So I did not use it much. Enter the new iMac and I figured I would give it a spin. Turns out the drivers are a no go from M-Audio (big surprise). Instead I used the "Apple" ones, that is that Leopard recognizes it just fine. The problem is I would like surround sound with a DVD with my Klipsch 4.1 system. I found out that VLC will do the surround and Apple's Audio MIDI setup app will let me config the speakers. Apple's DVD payer will not do surround. After trying a few configurations I set it up as Quadraphonics (4 speakers only). VLC needed no setup/changes from defaults. Bingo - I have surround sound, well 4 channel with sub. Problem: In the Audio MIDI Setup I can control left front or right volume, but even though it shows I can adjust the rear left and right channels, it does not. I turn them all the way down, even all four in fact, and the rears play at full volume. Any audio experts have a clue on this one? If I try a 5.1 setup, etc, VLC will give out the center channel and I end up with no voice track. With the Quad setup I am getting true front and rear stereo separation so I am happy, but would like to tone down the rears a bit.