The system has an input stage (50) with several control knobs, a controller (150) for output of control and other signals according to user control exerted via the control knobs, at least one loudspeaker (170.170'), a changeover part (130) with several switches., a microphone (40), an audio stage (100) which receives radio signals and sends them to the loudspeaker via the changeover unit, a telephone stage (110) which can send call signals to the loudspeaker via the changeover part, a call signal detector (140) and a speech detector (160), which recognizes certain user-spoken words and sends corresp. signals to the controller. An Independent claim is also included for a method of controlling a multi-function audio system
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