To find audiobooks, start at the library homepage, click the Databases tab at left, and click the letter C in the A-Z. Scroll to Commonwealth Collections and click.
If you cannot access the above video, you can watch it here
If you are already signed in to your UML email, you will not have to log in to UML again. You will see that one of the categories available is Audiobooks, so you can filter for only these titles.