The Problem of Evil MP3 Audio by Mardi Keyes
Mardi Keyes considers the problem of evil under four main headings: 1. The problem of evil for Christian believers. 2. The problem of evil for non-believers. 3. The Biblical resolution of the problem of evil. 4. What to do when doubts still crop up.
Full MP3 audio here.
Another great resource from bethinking.org.
Enjoy.