Thanks a lot!
I have a section on my reading list for books that are available as e-books, but not as audiobooks, and that section just keeps growing ad infinitum. I seldom find the time to read, but I often have time for audiobooks, as I listen to them while driving, or doing household chores, etc.
So, when I saw your post, I immediately tried it out, and it works really well for my purposes.
One feature request: It would be awesome if there was a control for the speech rate.
Great to hear that! Speech rate control is definitely on the roadmap.