Streaming Jazz audio archives- FREE!

Smalls Jazz club in NYC has posted audio from a bunch of gigs over the last few years. Some of it is not the greatest quality, but there's a lot of really interesting music on here.

Smalls audio archives

NPR also has plenty of programs online for download:

Nancy Wilson's Jazz Profiles
'Live at the Village Vanguard' series

(thanks to Adam Melville for these links)