ExtremeTech: In the wake of the Megaupload takedown, it might seem like a good time to back away from increasingly locked-down cloud storage. After all, you don’t want to lose all your media if the worst happens. At least one digital locker is bucking the trend: Google Music. The search giant’s cloud music service added a new feature this week; US users can now download their entire MP3 library, both purchased and uploaded tunes. The result might be the ultimate free music locker.