My book On the Historicity of Jesus is now available in audio format. As for all my other audiobooks, I voiced the text myself for Pitchstone Publishing. You can buy the audio edition of Historicity now through Audible.com or Amazon.com and (eventually if not already) iTunes.
This did come out a week ago or so, but I had to delay my official announcement until I completed and uploaded the bibliography file for the visually impaired to use with text-to-speech software, as I have done with most of my other books before this, all of which you can find on audio as well. See bibliographies for the full list of these companion resources for those books. Or go direct to the OHJ PDF bibliography to get the companion file for Historicity.