From Engadget: "So far as the yet very quiet forums are claiming, a new app called FairUse4WM can be used to strip Windows Media DRM 10 and 11 (i.e. PlaysForSure, but not WM DRM 9)."
NOTE: Obviously, this is considered a "hack." I hope when you find (FairUse4WM.zip) you’ll use this program simply to back-up your own personal media.