Your friend has invited you to become a Blip.fm DJ
I wanted to let you know about Blip.fm, a free music site that lets you dj your own internet radio station. It's a great place to share, listen to, and discover free music - all recommended by real people.
On Blip.fm, you just search for an artist or song, type a short message and the song gets sent out to everyone who is following your station. You can also broadcast your songs to other sites such as Twitter and Facebook.
Here's a link to my station so you can listen to what I've been playing: