title: DRM for videos bundled with a desktop app?
body: <p>So, I have this desktop app built using WPF and C#. It's basically an offline course system that has videos, quizzes, and other assorted content. My dilemma is that I don't know how to protect the videos once they are downloaded and installed on the users machine? Are there any DRM systems out there that I can look into?  I thought about storing them in a local encrypted database but I don't even know where to start with that (or if there is something else out there that I'm totally missing...)</p>
  
  <p>Don't even know where to start looking on this one - any ideas?</p>