I am happy to tell you that this seems to be working, mostly. When I post something which you can listen to, as well as read, you’ll find a “Listen to This” button at the top of the post. Just click on it to get the audio version.
It is not yet perfect, of course. (Nothing is!) The voice is artificial, for one thing, so the pacing and intonation may not be what you’re used to. And it doesn’t (yet) help at all with photographs and other illustrations.
I hope it helps, though — especially when used in conjunction with the “Font Resizer” thing I installed a few weeks ago. Let me know how it goes, of course!