For best results include 'MP3' in your search terms. (Example: Tim Keller Mp3)
The Sinfulness of Sin by Ralph Venning
Anger: Escaping the Maze by David Powlison
Uprooting Anger: Biblical Help for a Common Problem by Robert D. Jones
The Sinfulness of Sin 
Anger: Escaping the Maze 
Uprooting Anger: Biblical Help for a Common Problem 