internet radio .
I like the Original Punk channel. Stooges, Ian Drury & the Blockheads, Sex Pistols, Ramones, Social Distortion, Germs, Dead Boys, Elvis Costello, New York Dolls, Clash, Jam...you didn't hear this stuff on the radio when it was new. The other channels I've tried are good too.
You can even get vinyl records for many of the releases from their affiliate site.