Audio system and its contents reproduction method, audio apparatus for a vehicle and its contents reproduction method, computer program product and computer-readable storage medium

摘要

An audio apparatus (audio system) made up of the car-mounted audio apparatus 100 and portable audio apparatuses 200a and 200b transmits/receives contents data such as music via radio communication. As the communication system in this in-car radio communication, a short-distance data communication system is used, which allows respective apparatuses to recognize and authenticate with one another and perform data communication between those apparatuses.