About This File
This is my working, no KP, VoodooHDA 2.7.2 from my Toshiba L750/0DP (part no. PSK2YA-0DP02S) . I've edited plist to include definitions for both the C200 audio controller and the nvidia HDMI audio controller. On board sound works fine, I have no way to test HDMI audio though.
The edits appear to have fixed random KP's at boot. I did also remove AppleHDA.
I imagine that this would also work with 10.7 and 10.6, I have no way to test this though.