(adsbygoogle = window.adsbygoogle || []).push({}); So, my 360 e74'd on me. I sent it away for repair, and a friend is going to lend me his 360 until mine comes back. How do the licenses for DLC work? Will I still be able to use everything on my HD as long as I'm on live?

yes you can

As long as your HDD is on his Xbox it will be just like your Xbox.