I've been playing with Mojo for a few days now and I think it is absolutely amazing. What Mojo lets you do is let you browse tracks within your friends iTunes Libraries over the internet, and then DOWNLOAD THEM! Once installed, a buddy window is available within Mojo that lets you check out the libraries of friends who have also installed Mojo. All of this for free!
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For selected friends you can see everything in their library including Movies, TV shows etc. To play any of their tracks just double click on it, and click the download arrow next to each track to download it. This app is so amazing, that Mojo will even tell you automatically what tracks your friends have that you don't have!
http://www.onetipaday.com/2008/05/21/download-mp3s-from-your-friends-itunes-libraries-with-mojo/
http://www.onetipaday.com/wp-content/uploads/pictures/2008/05/mojo.png
http://www.onetipaday.com/2008/05/21/download-mp3s-from-your-friends-itunes-libraries-with-mojo/