Yes locate the movie in itunes, select and apple i for get info, on the info tab it will show you the location in your mini hd. log in to the mini via the PB using connect to server and then use itunes to add to library the movie and point it to the file in the mini drive, make sure itunes is set to copy the file to the library. then try to play the movie, you must have your itunes account authorized on the PB so that it can play the movie and any music you copy over. this is not needed for sharing but it is when you copy across and want it to reside in both libraries. music can be on up to 5 machines at once, not sure on movies.