I’m currently listening to the audio book version of The Life and Times of Joseph Warren, by Richard Frothingham. Someone was nice enough to record it into audio and it is both a phenomenal book and recording quality.
I don’t know about an officially organized club, but there is a FReeper Book Club keyword that sits up in the top bar of the main forum page, I have been using it every single time we release a new audio book. Perhaps take a look and see what’s available as there are some potentially good things that might be of interest.
https://freerepublic.com/tag/freeperbookclub/index
Honestly, I haven't been as active on FR as much in the past few years, mostly because I do a lot of internet reading on my iPad, but I hate typing on that thing. I prefer a keyboard, but I'm not in front of one as much.
Plus I always have to be careful using this site at the different places I work because, well, people are nuts.