Wizard Cops is a weekly actual-play RPG podcast set in an American Potterverse of our own creation.
http://www.podcastgarden.com/podcast/wizardcops#5217
Chapter 5, Part 3
The Aurors of Team 7 must fight their way off the street after the reappearance of Damian Avery, and the disappearance of Brutus (played by special guest Michael Saqr), workshopping a new game system.