I've "watched" many hours of radio. Music for decades until all my favorites were only played on Oldies stations. Then Talk radio until I got tired of the blabla blah. When I switched to audio books on an MP3 player everything was new again. Listening to a favorite fiction series, or learning a subject by lectures made watching the radio cool again.
Like watching a movie play in your head. I'm a SciFi paperback reader from early teens until corrective lenses made it less fun. The combination of everything going digital and broadband internet makes it easy to find most any book in audio form. HERE is a link to an article about finding free copies, or google gives 2,330,000,000 results to "free audio book" queries.