Re: Rockband - only more for reals.
Sibelius has had an auto-scroll since I started using it and I know that DAW packages have had if for years for their MIDI note playback.
The point is, in a band situation you are very unlikely to ever be given a computer file that will scroll for you based on a master clock controlled by the conductor. You are going to be given a sheet of paper with notation on it.
Give Me The Tea and Nobody Gets Hurt