I like music, and while some people (ahem) might think they're more knowledgeable than me (and "they" are probably right), I'd like to think I know a bit about the subject.
However, I didn't know about something really cool called "All Songs Considered...".
The back story:
I went to the doctor today, and on my way, I was listening to one of my favorite bands, Ted Leo and the Pharmacists. When I got back to the office, humming and tapping my toes, I looked them on Wikipedia, and found a link to this (a recording of a Ted Leo concert), which served nicely as background music while I made cheese soup (by request of my 8yr old).
It turns out npr.org has a buttload of music on their website, much of it served up in podcast form on the podcast "All Songs Considered..." (link). I don't know who does the concert selection for the podcast, but it's like they're reading my internal setlist. They have concerts from Steve Earle, Radiohead, Fleet Foxes, Jim James (lead singer of MMJ), Spoon, Neko Case, Arcade Fire, New Pornographers, and many more.
So, if you're looking for cool music, consider NPR. It's not just for white-wine swilling, granola-eating, tree-hugging, flag-burning liberals.