A mobile communication device including an application running in a first memory of the device, an application audio unit in the first memory, the application audio unit being communicatively coupled to the application operating, and a telephony unit in the first memory, the telephony unit being communicatively coupled to the application, a radio transmission unit including a radio interface unit operating in a second memory and communicatively coupled to the telephony unit, a radio audio unit operating in the second memory, the radio audio unit being communicatively coupled to the radio interface unit, and a hardware driver unit communicatively coupled to the radio interface unit, the hardware driver unit initiating a communication connection between the mobile communication device and another device, an audio switching unit communicatively coupled to the application unit and the radio transmission unit.