I'm an audio editor / producer for a family-friendly radio drama program, and we made a story on his life a few years ago. The dude really was awesome, it was one of my favorite stories to work on.
It's not free to listen to (unless you happen to catch it on the radio when that episode happens to be airing), but you can listen to a 30-second snippet here. (It's the first story on the album, "From Slave to Hero".)