Just wanted to say thanks for this, this is really cool. I think the karaoke mode alone makes this worth having. What would I do if my Xbox 360 dies? Maybe I could pick up another one at a pawn shop, but with this, I can play the customs on the PC as karaoke tracks and at least have that. I was never a good rhythm gamer. I sucked at Guitar Hero. When I play Rockband, I only sing. I can play bass up to hard up to about tier 4 and expert up to tier 1 or sometimes 2, guitar a bit lower, and I really don't have the endurance to do drums at any level. But I can do vocals and I can pass just about anything on expert and do fairly well on anything on hard. My skills are nothing to brag about, except maybe to children. But I love music, and something that will play music in a different way like this is at least interesting.
Also, I can put this on a flash drive with a handful of customs, and take it anywhere. So that's neat, too.