Slapworth

Wasn't Activision ALSO the company behind the TAC lawsuits, and not Harmonix?

Yes - it encodes game data for songs in your iTunes.

iTunes 7.5 contains the code to do this.

One correction: RedOctane was the PUBLISHER of Guitar Hero.

Harmonix was the developer, though they weren't purchased by Activision.

A company in the Boston area has something similar (if smaller-scale) going, called Tomb. http://www.5-wits.com/content.html