Now the kids

got an Xbox360 for Christmas and I got the Elite for the larger HDD storage capacity.
I have connected via my home network and can stream audio mp3/video avi's to it from my shared drives, but what I really want to do is move all my media Audio/Video/Photo's onto the Xbox HDD.
1st impressions are that this is not possible.
Is there an application that will allow me to do this, if not whats the point of the 120GB HDD as all it seems to store are player profiles.
Cheers....