I assume the Audible options must be put in place by the publisher. That is how X-Ray works. A lot of people get pissed because X-Ray seems to be available in only a small number of books, but that is because the publisher has to knowingly add it and most seem to not want to do so. So count this super-hyped Audible stuff as merely another BS option Amazon has added but that we won't see much benefit from. In other words, business as usual at Amazon. Meh!