I accidentally trained my brain to absorb audiobooks. I say accidentally because didn’t intend anything going into it, I was just bored with my options at the time, and drove for work. At first I had no retention whatsoever, but I enjoyed listening while it was on so I kept doing it. About three months into it I noticed I was remembering more, and a few months after that I started to have about the same visualization with audio as I did with reading.

This was over 15 years ago and 95% of my reading is still audio. My reading comprehension wasn’t affected, I just got used to being able to do chores or puzzles while getting in my books. I also got the bonus of being able to understand verbal instructions much better than I used to, and when I went to college I learned more from the lectures and had an easier time taking notes.