I agree that the enjoyability factor is high.

One can understand why it was extremely popular with the public when published. It's been a while since I couldn't put a book down like this. I really like the Amazon whispersync feature. I have been able to switch from the ebook to listening while commuting and exercising. I've been able to progress at a faster pace through this efficient time management. After I listen to an audio portion, I go back to the ebook to skim the written word and take notes.
Thanks for the info, AnotherCat! I read
Frankenstein last autumn so it's still somewhat fresh in my memory and the podcast sounds interesting.