Q. Do I return or "check in" the audiobook when I am finished with it? What if I am finished with the recording before my checkout period has expired?

If you are finished listening to your recording before your loan period has expired, you can log in to your account, click the "My Collections" tab, and click the "Return Now" button under the title with which you are finished.

Otherwise, the checkout will simply expire after 21 days and the recording will become inaccessible.