Abstract: A foot-operated audio effects device (10) receives, stores and operates at least one software audio effect plug-in (86). At least two of the audio effect plug-in (86) may be designed to operate under different operating systems. The device (10) may receive multiple audio input streams (38, 40). Users can control at least one parameter of the audio effect plug-ins (86). The device (10) may include a mass storage device (72) which stores audio which has been generated within the device (10). In use, the device (10) may be connected to a computer (110) and software audio effect plug-ins (86) transferred to and stored in the device (10). The computer (110) may be used to configure parameters of the audio effect plug-in (86). Those parameters may be stored within the computer (110).