Composite media file broadcasting program broadcasting control system

An organizing unit manages a program frame and a time frame of CM and a producing unit generates a composite media file to be broadcasted and a broadcasting schedule information. A schedule control unit concentrically control an organized schedule information map managing the organizing unit, a composite media file modification schedule information map held by the producing unit and a file updating schedule information map. A broadcasting unit generates a broadcasting data according to the information provided by the schedule control unit to perform broadcasting to a transmission line. A trigger input device commands broadcasting unit for modification of the broadcasting data of the program on broadcasting.