Since its relevant here and you might find it fun/useful. I also wanted to give a plug for a site Ive been working on that helps people share songs with their friends. Its built on top of Facebook and Youtube. It also has some features that make it easy to record audio on the site or on from your phone without a download or install.

http://www.myradeo.com Its free, easy and there’s no account signup. Login with Facebook. Check it out if you get a chance. Hope you like it. Thanks!