Simplify Media: Share Your Music Collection with Your Friends via Streaming [Multi-Platform]

Simplify Media is a program that lets you listen to your friends music and allows them to listen to your music library, all in just a few steps. Also, this works for any operating system.

The operation is simple: choose which folders your friends will be allowed to listen and then invite them to create an account.

In Linux use Rhythmbox to listen to the music of your friends, use iTunes on OS X and Winamp in Windows.