This is Cool. The AP reports that "Apple Offers College Lectures Via Podcasts." From the article:

Apple's service offers universities a customized version of the iTunes software, allowing schools to post podcasts, audio books or video content on their iTunes-affiliated Web sites. The iTunes-based material will be accessible on Windows-based or Macintosh computers and transferable to portable devices, including Apple's iPods.

The service lets institutions decide if they want to limit access to certain groups or open the material to the public.