The present invention offers a portable terminal device in which, the jitter control unit controls the transmission buffer unit in such a manner as not to output the audio data buffered in the transmission buffer unit to the Bluetooth communication unit when the main control unit determines that the content that is to be subjected to a reproduction process contains video data, and when an underflow arises at the transmission buffer unit, and abandons the audio data that is not output to the Bluetooth communication unit at the time indicated by the time management unit.