Byzantine History Podcast
Today, I ran into an excellent teaching resource. I travel a lot and I am always looking for new and free stuff to listen to in my car. I am linking a series of lectures I found on Byzantine History. Everything is approximately 17 minutes in length, and the author does an incredible job summarizes long periods of history. I have only made it through Julian the Apostate, but so far so good. His decription of Constantine is a bit rough, so you may want to double check his characterisation.
Here's link and I hope you enjoy: