Grumpy Old Geeks Products Tortuga Power book player Product Tortuga Power book player 2 mentions in 1 episode An open-source audiobook player submitted by a listener for the hosts to try. Mentions 288: Ten Times the Nerve Oct 11, 2018 53:59 I couldn't find a truly free audiobook player on the App Store, so I started one and made it open source. 54:17 It's Tortuga Power book player.