In a player/recorder system, a graphical user interface method allows central control of one or more tracks of a plurality of audio processing modules. The plurality of audio processing modules are connected to a computer system having a processor and a display. The method includes the steps of generating a first display portion on the display by the processor, the first display portion including one or more control boxes to control a corresponding one or more tracks of the plurality of audio processing modules and generating a second display portion on the display by the processor, the second display including a central control mechanism for controlling all of the one or more tracks of the audio processing modules.