From Overdrive customer support: Hello, OverDrive Audio Books are copy-protected in order to help enforce the publisher's copyrights on the material. While we are not able to offer legal advice in regards to the usage of the files, we suggest you review the "Important Notice about OverDrive Audio Book Copyrighted Materials" (in OverDrive Media Console, go to Help > About Copyrighted Materials). Thank you for your interest in OverDrive Audio Books. Sincerely, The OverDrive Media Support Team