*[http://tcmfm.blogspot.com/ The Christian Message From Moscow] by the Voice of Russia radio network - Produces "[http://www.vor.ru/English/Christian_Message/ The Christian Message from Moscow]" in English. Learn about Russian Orthodox Christians, their rich history, music, composers, performers, writers, sermons, and Saints' lives and works.
*[http://www.stcatherinechurch.org/audio/ Saint Catherine Greek Orthodox Church], in Greenwood Village, Colorado, records all the sermons, educational lectures, retreats and special events and puts them in a podcast for listeners.
You can also go download individual recordings on their website. The Introduction to Orthodoxy class was particularly popular and special.