Recently came across this website detailing the days of KSAN 95 FM in San Francisco. Lots of very interesting late 60s/early 70s stuff there. My initial interest was of early days shows of Jimmy's, as the 10/18/74 show that is on this site has gotten frequent play time on my iPod. I also found lots of other late 60s/70s shows from other artists of the era there, live to stream to your computer (and beyond).