This controversial site offers free streaming live music from concert promoter Bill Grahams personal stash. If you aren't aware of who Bill Graham was:
http://en.wikipedia.org/wiki/Bill_Graham_(promoter)
http://www.wolfgangsvault.com/Home.aspx
http://en.wikipedia.org/wiki/Bill_Graham_(promoter)
http://www.wolfgangsvault.com/Home.aspx