Sine part of the compromise is the smaller HDD in the MPA, external drives (Time Capsule included) are a necessity for the ever growing media files that won't fit into the 80G (or 64G) HDD. What are people's backup strategy? And here I mean backup of a backup. Say, if I have all my iTunes music/movie/TV shows on the Time Capsule, how do I backup that to an another external HDD?