Lossy Audio Bootlegs
mostly led zeppelin, but some deep purple and hawkwind
http://www.youtube.com/user/Conneyfogle#g/p
perhaps some others
david bowie concerts and other audio stuff
http://www.youtube.com/watch?v=6NBH46ygenQ
black sabbath and phil lynott stuff
http://www.youtube.com/user/blacksabfan#p/p...