1. A method of providing additional audio/video information during a movie to viewers in a theater, comprising: providing a viewer of a movie with a portable device, the portable device being pre-programmed with data representing audio/video information related to the movie; wirelessly transmitting at least one time code during the movie, the time code being a time from a start of the presentation; receiving the at least one time code at the device; processing the at least one time code to determine where to start audio/video information; and displaying the audio/video information on the device in synchronization with the movie.