I can recommend using one of the options mentioned here https://askubuntu.com/questions/16918/how-to-listen-to-audible-files https://askubuntu.com/questions/169

I can recommend using one of the options mentioned here https://askubuntu.com/questions/16918/how-to-listen-to-audible-files https://askubuntu.com/questions/16918/how-to-listen-to-audib... Turning them into regular audio files and using your favorite player and having proper backups of the files is so much nicer. I'd straight up not use Audible if that was not an option, it's just not worth it.