The product is called, loosely, Dragon Dictation. It’s made by a company called Nuance. There are versions for the PC, an old one for the Mac, and a mobile version that works a little differently.
Have you ever heard of Instaread? Biblioteca? Nextory? How about audiobooks.com? Sounds like a legitimate audiobook domain, right? Maybe you’ve heard of Playster? Hint,...
It's just so easy. It's probably harder to not do it.
This is where things can get exciting with your book as a podcast as opposed to (or in addition to) an audiobook.