Dutch broadcast station VPRO's website is Holland’s biggest platform for alternative music. Here's a link to a shitload of streaming live concerts and tracks. You'll have to do a bit of cut and paste once there, but it's the easiest way for me to link to the list. For the cut-and-paste-inept, there's a standard interface, but the site's not in english.
A heap of MP3 interviews from JJJ -- Australian radio. Artists include Caribou*, McLusky*, Antony and the Johnsons*, The Arcade Fire*, Architecture in Helsinki*, Bright Eyes*, The Decemberists*, Sharon Jones*, Black Mountain*, TV On the Radio*, Black Keys*, Black Dice*, Mercury Rev*, The Dears*, Four Tet*, Fiery Furnaces*, Jolie Holland*, and many more. * MP3 song of the artist -- not interview!
KVRX, University of Texas' radio station, has an archive of tracks recorded live in their studio. Artists include The Magnetic Fields, Brian Jonestown Massacre, Broken Social Scene, Devendra Banhart, Explosions in the Sky, Sebadoh, Mojave 3, Okkervil River, Japancakes, Call and Response, Super Furry Animals, Cat Power, I Am The World Trade Center and the sublime Paul Burch, among others.