These 20 sites let you listen to music online, for free. There's quite a variety of sites here, from the better known sites like Spotify, SoundCloud and Last.fm to less well known sites with music, news, and local or global radio stations just waiting to be discovered. There are site descriptions for each site, including ads (if any) and geographic availability. One thing I really like is that mobile apps for iOS and Android have their own links so you can go right to them from your mobile device.  Read More