Forum:Steve the Bandit ECHO recordings in Zombie Island?

I happened to stumble across a youtube video about two ECHO recordings found in The Zombie Island of Dr. Ned DLC that mention Steve the Bandit. I checked the wikia page on said DLC and found no information on these recordings. The video is here:

http://www.youtube.com/watch?v=ErLdnMafO_4

If someone could provide information on where to find these I would be most grateful.