If you happen to use iTunes there's a Catholic, and I do mean Catholic, College which provides free lectures and talks through iTunesU.

1. Download and install iTunes on your computer. 

2. Click on iTunes store

3. Once the store page comes up click "power search" on the right side of the window, type in "Christendom College" in the Title window and click search, look for the College link on the left side under "Institutions", click on the link and let the learning begin!