Abstract: An apparatus (100) suitable for connecting a communications device or other audio/audio-visual device to an audio system comprises a cassette-type audio adaptor (102) having receiver means for receiving audio and/or data signals transmitted from the device or the like and connecting means (120) connecting the receiver means to a head (118) of the cassette-type audio adaptor thereby to apply the signals to the head. The receiver means comprises at least a part of a Bluetooth chipset (104) disposed within C the cassette-type adaptor. The Bluetooth chipset (104) includes transmission means for transmitting audio signals back to the device as electromagnetic signals, and a microphone (114) is connected to the transmission means for detecting audio signals from a user and applying them to the transmission means.