Spotify is a service that allows you to listen to music free of charge on your computer—if it's something they have in their library—but their library is huge. You need to download some software to make it work. I have had it for about 4 months now and it has been trouble-free. You can't download and save a copy of the music; you can only listen, but you can choose the songs you want to listen to, and listen as often as you like. Periodically, it plays commercials. When I don't want to listen to the commercials, I turn down the volume on my speakers, or take off my headphones, until the commercial is over.