It would be great to load one or two audiobooks onto the Dash Pro and go for a run or flight and not have to use the phone as a Audiobook player.
No reason you can’t. You can transfer doc and jpg files to them. In a pinch, if you don’t have a memory stick with you, you can transfer just about any file if you have your Bragi Dash, the charge case and an appropriate USB cord.
There are a number of conversion programs you can use to convert the Audible files directly to MP3, all of which constitute another way to violate your licensed use.
I think you need to lobby Audible in order to be able to use your files on the Dash as they hold the control and I don’t see a lawful path to using their files. If they saw a market, they might develop a portable licence token that companies like Bragi could work with to allow such files to play but the ball is in Audible’s court on this one. I doubt it will happen in the forseeable future.
I’ve ripped a few audio books on CD from a few I have purchased and some borrowed from the public library (watch licensing with library books) and these files play well on the Dash. Prior to the latest update, any books I had ripped to 32 Kb/s crashed the Bragi MP3 player so I needed to up the bitrate to get reliable playback. I’m not certain whether this problem has been resolved with the latest firmware.