The great debate between believer and atheist is available for free. Well almost.
The debate between Greg Bahnsen and atheist Gordon Stein is available from Covenant Media Foundation for two cents. Considering that people these days are more likely to walk past two pennies in the parking lot than pick them up, sounds like free to me. HT: Pulpit Live (via a link from James White ).
For the more secularly inclined, the BBC has also expanded its podcast offerings immensely. Lots o' good stuff to choose from.