Podcasting News - Educational Podcasts
http://www.podcastingnews.com/category/podcasting/educational-podcasts/

Resources for Educational Podcasting
http://edweb.sdsu.edu/courses/edtec700/POD/resources.htm from Bernie Dodge of San Diego State University, which includes:

• The Education Post Network
  http://epnweb.org/, a directory and search engine