Which reading app should I use in order to listen to an audiobook?

The Cantook application allows you to borrow, as well as read or listen to ebooks and audiobooks. 

Audiobooks can also be streamed directly in your web browser, from the link provided by your e-lending platform.

You can also listen to an audiobook that you have downloaded to your computer, with any program that is compliant with LCP protected files, such as Thorium Reader.