Abstract: To design the mass media playback utensil with more powerful functions,the authors explore several key control techniques,such as the left and right sides loudness control,the cycle playback control,the playback time and process control,playback course control.In the meantime,the paper describes the main realization flow and a part of meritorious service capacity code.Using these methods,the user can create a mass media playback untesil with convenient operation according to the demand.