Is there a PDF or audio version of Mike's book?
Unfortunately, we don't have any of Mike's full books recorded. The publisher (Pearson) owns the rights to audio versions of the full books he has written for them so, unfortunately, we haven't been able to create an audio version of any books.
All of Mike's books are available as PDFs through InformIT which is the online bookstore division of his publisher, Pearson. See http://www.informit.com/search/index.aspx?query=mike+cohn