why not audiobooks?
And actually, even in the case of fiction, some books have had me re-read over certain parts a few times. For e.g. Three Body Problem has parts which I had to read over, in contrast all the four Hyperion books were relatively easy to follow in audio format.
Where possible, I use audio books as a follow up after I have read the text.
But, most non-fiction books (atleast for me) work better in text format where I can pause, take notes where needed, go over the content again and proceed.