Here is an absolutely great resource! There are MP3's covering three of the courses the late Dr. Meredith Kline taught in seminary--Kingdom Prologue, Old Testament Exegesis, and Old Testament Prophets. Back in the day, I had Kline for all three of these courses, and I am still mining the gold from his books and lectures. How great to hear him lecture again!
I cannot recommend this highly enough. Click here: Between Two Worlds: Kline Lectures.