song.ly is the web service that allows you to share your favorite music on twitter. All you got to do is to submit a link to an mp3 file you’ve found on the Web. Your friends will get a short link to a page allowing them to play the song right in the browser.

Now you can share songs with just two clicks with the new FireFox add-on. Once installed, whenever you found a nice song that you would like to share, simply right-click the link to the music file, and Select “Song.ly: Share This Song” in the context menu shown.