I was pleasantly surprised that my forerunner 255 watch supports m4b files with audiobooks. I copied one and played it just fine. When I disconnect my headphones, it pauses. But once I get back and press play again, it will reconnect my headphones, then play couple of seconds from the paused place in the book and then just restarts from the beginning. This means it is basically unusable, I will have to remember the exact time of the book for the next time then spend minutes forwarding it slowly to continue each time before my run. Does anyone have any suggestions how to prevent the restarting?