Select the "Media" link from the main search screen on the library's homepage.
Input terms into the Esearch box and submit. If you are looking for a particular title, input that title and surround it with quotes (e.g., "Killing us softly").
Look through the results to find a relevant item.
Select the item's title. This will take you either directly to the media item (if it is available online) or to a detailed record showing its location.