OverDrive from Mac is no longer supported or available for download from app.overdrive.com.
Mac users will no longer see the option to download borrowed audiobooks from their library or
school's OverDrive website.
As an alternative, you can listen to audiobooks in your web browser on your Mac.
Once you borrow an audiobook from your library's website, choose the "Listen now in browser"
option. Or, you can listen to audiobooks in your web browser using Libby (for public libraries)
or Sora (for schools).
If you already have audiobooks downloaded to OverDrive for Mac, you'll still have access to
them until the end of their lending periods or until you upgrade to macOS Catalina
(which is incompatible with the app).
Please feel free to contact us if you have questions or need help listening to your audiobooks!
Text from Help.OverDrive.com