Didn't work for me. I'm also on a 1.0 board on 10.6.8 64-bit, but it won't recognize the internal sound card. Not a big deal to me, as I only use my USB recording interface for sound, but still would be good to get it working as I may put this machine back in it's former home theater role. Anybody have one of the older versions Riley posted? I'm only concerned with stereo in/out, no multichannel.