The FM transmitter is a media output system that is inbuilt to many of our devices that allows you to directly play audio from the device to the radio by connecting the radio to an empty frequency.

To do this, go into the audio/audio output settings on your device. Once this has been found, go through frequencies on your car radio to find one that is not occupied by a radio station. Once done, on the device, where prompted, select the frequency that you found on the radio.