Quake3World

https://play.google.com/store

The music section lets you upload up to 20,000 of your own songs for free and playback on any HTML5 device. Works on my iPhone. Not sure if I'll use it though. Seems like there has to be a catch.

The catch is that they now know exactly what music you're listening to, when, how long at a time and where. They will sell this information to recording companies and make a boatload of money off of it.