If you do not have a key, you can purchase the software or upgrades directly from the manufacturer or authorized retailers: DgFlick Solutions Album Xpress PRO page lists various versions and upgrade options.
To register DgFlick Album Xpress PRO 12.0, you must use a and a registration key provided by the manufacturer. The PRO version typically requires a USB dongle (security key) to be plugged into your computer to function. How to Get Your Registration Key