I've had a nice yellow "Listen" button at the top of my Podcast page for a year or two now. It points to my main Grizzly's Growls RSS feed, which has practically everything I do. I've also known that the Default Feed for each of my books from Podiobooks.com has all the chapters for that book, from first to last (that's the important part). But just now it finally struck me, I could put a Listen button next to each book on the Grizzly's Growls website, linked to that books feed... and a casual browser to the website can go ahead and listen to the book. From beginning to end. With one click.
Only took me three years to figure that out.