"The White Horse Inn" is a radio program that continually talks about the Reformation. A number of discussions are on faith alone, grace alone, Christ alone, and Scripture alone. You can download their forty-some minute conversations and listen to it throught such programs as Windows Player, an iPod, mp3 player, etc.
The month of October has four great discussions on the Reformation and why it is still important for us 500 years later.
Go on over to http://www.whitehorseinn.org/ and check out their audio and written articles.