A reproduction device being connectable to an external device comprising: a receiving section for receiving a data stream that includes first data on a compressed and encoded video content, first time information setting the presentation time of the first data, second data on an audio content, and second time information setting the presentation time of the second data, wherein the first and second time information sets a time at which the first and second data are presented synchronously with each other; a separating section for extracting the first data, the first time information, the second data and the second time information from the data stream; a video decoding section for decoding the first data and outputting the first data decoded in accordance with the first time information; an audio decoding section for outputting the second data in accordance with the second time information; and an output section (12,14) for outputting the decoded first data output from the video decoding section based on the first time information to an external device; the reproduction device characterized by further comprising a lag setting section for retaining lag information derivable from said external device and by which said external device is to be identified said retained lag information also defining how much lag should be caused in presentation of the second data outputted by the audio decoding section and for modifying the second time information according to the lag information; wherein the output section (12,14) is further adapted to output the second data output from the audio decoding section based on the modified second time information modified by the lag setting section to the external device. a receiving section for receiving a data stream that includes first data on a compressed and encoded video content, first time information setting the presentation time of the first data, second data on an audio content, and second time information setting the presentation time of the second data, wherein the first and second time information sets a time at which the first and second data are presented synchronously with each other; a separating section for extracting the first data, the first time information, the second data and the second time information from the data stream; a video decoding section for decoding the first data and outputting the first data decoded in accordance with the first time information; an audio decoding section for outputting the second data in accordance with the second time information; and an output section (12,14) for outputting the decoded first data output from the video decoding section based on the first time information to an external device; the reproduction device characterized by further comprising a lag setting section for retaining lag information derivable from said external device and by which said external device is to be identified said retained lag information also defining how much lag should be caused in presentation of the second data outputted by the audio decoding section and for modifying the second time information according to the lag information; wherein the output section (12,14) is further adapted to output the second data output from the audio decoding section based on the modified second time information modified by the lag setting section to the external device.