Not about PodBible, but a somewhat kindred spirited project, LibriVox describes itself like this:
LibriVox volunteers record chapters of books in the public domain and release the audio files back onto the net. Our goal is to make all public domain books available as free audio books.
One LibriVox project I’ve worked on has now been released back into the wild: Extraordinary Adventures of Arsène Lupin, Gentleman-Burglar. This is a nineteenth century comedy melodrama, Sherlock Holmes makes a bungling appearance in one of my chapters! Do have a listen, and let me know what you think…