@tym
I primarily listen to audio books. In fact when I try to read an ebook on my Sony T1, I have stopped, converted it to audio and listened that way.
Yes, my eyesight is getting bad, but my main reason is when I read a book, I am restricted to sitting (or whatever) in one place while I read. But listening to an audio book (which I convert to MP3 and place on one of my players), I can move around, do housework, drive to the store, shop, or just lay back and close my eyes. And most important of all, I listen to the audio book at night to help me sleep. Having the talking (VERY softly) in my ears, puts me back to sleep when I frequently wake up.
I have an electronic converter which the voice is not too bad, not perfect, but acceptable. In it, to convert text is as simply as copying a section to clipboad and push the record button. I have it go directly to a file instead of read out loud. A full, normal chapter takes about 5 to 7 seconds to create the mp3 file. I've converted full books in a matter of 5 minutes or so.
Since ALL my books are placed into calibre, even the purchased ones

, I just use its viewer, with copy to clipboard button and I'm good to go.
So keep converting....
AJ