Simplify Media freeware can be installed on your iPhone, PC, Mac or Linux. It let you enjoy songs from home while at work or from any WiFi location. You can explore friends’ music while they are online.

There is no need to upload files to a website. It play music using iTunes, Winamp or Rhythmbox. Only your group can access what you are sharing, and no one can see your other files. Files are streamed only within your private group. So it’s legal!
http://www.simplifymedia.com/index.html