So A LOT of the time we spend in the shop we spend wearing our headphones and listening to audiobooks - separately, happily, and loudly (so we can hear the stories over the random orbit/dust collector/drill/etc.).
I veer toward popular fiction I find on the Minuteman Digital Media Library site and listen to on my phone through the free Overdrive app (lately: Orange is the New Black). The only downside to going through the library is that you have to hang on the waiting list for a lot of popular books and some aren't available at all.
Nico prefers to buy his audiobooks through Audible - he goes for the longest books he can so he gets his money's worth. Turns out the longest books are typically fantasy novels (he really liked this 50-hour behemoth and thinks most fantasy novels aren't quite as good).
We both highly recommend audiobooks for getting through monotonous, repetitive tasks. They're distracting - so I wouldn't use them for detailed work or writing (I prefer music or TV/movies I've seen a thousand times for those situations). And they're not safe to listen to while using a table saw or a jointer. But for sanding. Well. I couldn't do it without them.