Simplify Media

Simplify Media is a free, and legal service that makes it possible for you to stream your music library over a private network of people. Just download the Simplify Media application and follow a small setup wizard. Invite friends to your limited network and they are then able to view and listen to your music library. This is also very handy if you are away from your home library, say at work, and you want access to all of your music. The service is available for Mac and Windows, and they even have an iPhone/iPod Touch app.