Revision to Rock Band Preview

In my Rock Band Preview I had made a statement saying that your voice does not come out of the speakers when you sing, however I went back to Best Buy today and played again and my voice did come out of the speakers. I don't know if it was something in the settings that were messed up the first time or what, but it's all set now, and it is awesome to hear your voice coming out of the TV while you rock out. A new complaint I have is that guitar there was broken, so hopefully it was some jerk who was rough on it, and not that the guitar is low quality.