Now, this is really cool: gnump3d is an open source streaming server. It automatically detects all the media on your disk, and serves it as mp3-stream on Port 8888 . Since I´ve got a flatrate, I like to have all my music on my linux box at home, serving it for me, so that I can listen to it everywhere I have a internet connection. The quality is brilliant: you even can select between different playlists, or make your own. When you give user/pass to your friend, they are able to listen to your music. (This all somehow reminds me of last.fm 😉