DOT-Tunes

If you're an iTunes user (and for free, you can be - check out http://www.apple.com/itunes and download a free copy) then take a look at DOT-Tunes. DOT-Tunes was conceived by a group of professional musicians who use iTunes for storing their own copyright music and recordings and who wanted to be able to easily demonstrate their work to clients and to share 'works in progress' and other original compositions with others.
You can use Dot-Tunes to share your original iTunes tracks with everyone in your home or office, or share your compositions with the world via any web browser. Download a copy at http://www.dotpod.net/ (The server costs money but the client is free)

Check it out...