Hi Justin,

I had the same problems with the out of sync audio in HD on youtube.
If you are using a Mac, then I've solved the problem. Check out my
HowTo video at:

http://www.youtube.com/watch?v=230AOa-kBDY

The solution is in still producing a quicktime movie (*.mov) using
MPEG4 encoding and AAC audio at 44.1kb/sec. My YouTube video makes it
clear. Hope this helps... take care.

Michael