Ok I just finished the jam session/viewing party with some of my friends and we totally had blast. Two things you'll want to know- if you want to hear the keyboard at a decent volume, stereo is by far the best mix. The surround sound is not great. Second, when you see the voice not quite match JLB's mouth (although it's not far off), I can tell you as someone who's heard a bit of the untouched audio that most of the overdubs are actually
not as good as how he originally sang it. You probably don't believe me when I say that, but it's true for the most part. I only say it so you know when you see overdubs, it does not mean it wasn't as good at the actual show.
That was pretty much the only thing I wasn't
totally pleased with, and it's not huge. This DVD freaking ROCKS.