If you have a MobileMe account you should be able to see this too. Navigate to /idisk/ on your MobileMe account. There should be a "Shared Files" tab located under the Home, Public tabs above. I am quite sure this is new, I haven't noticed this before and am not certain what its use is for. I am, however guessing it has something to do with 'iTunes Replay' ( https://www.macrumors.com/2009/02/11/itunes-replay-on-demand-video-coming/).
-Virtuo
-Virtuo

