Mojo is a music sharing application which allows you to share your iTunes library with your friends, and also lets you download from their libraries too.
Once you've installed and registered with Mojo, it opens with a small messenger type window that will show all the friends libraries you can look through. On an intranet, they should show up automatically, and on the internet you can add any 'buddies' who you know on Mojo through the add buddies tool. This means it can be hard to find other users unless you agree with someone to use Mojo.
When you open a library, it looks a great deal like iTunes, and is easy to use. You can see all your tracks (in grey), protected songs (in red) and your contacts' songs. You can also see other iTunes sections like shows, movies or podcasts and even subscribe to others' playlists. Changes will be automatically downloaded to your library so you are always up to date.
You can listen to any unprotected song by highlighting it and pressing play on the basic Mojo player, or alternatively click download and it will swiftly be added to your own iTunes library (you can specify any destination folder).
Lacking a tool bar, Mojo can actually be intimidatingly simple to start off with, and this makes it feel a little awkward. That's unfortunate, as the application runs really well once you've got used to it, and is an easy and enjoyable way to listen to music.
Although it may be hard to find your friends, if you can this is an easy way to share eachother's music.