My mother always told me it was a good thing to share.  So, I try to share everything…;) From what I understand mojo lets you share your iTunes library with friends ( not openly ) that you add to their friends list manager.  I wrote “understand” because their servers will not let me signup for a new account to check the service out.  They’ve been dugg, so  they’re probably getting pounded as we speak.  Here’s a link to the actual software companies page.  I don’t condone stealing copyrighted material per se, but I do believe you should have the right to back up your music any way that you might see fit, including over the internet.