| http://www.w3.org/ns/prov#value | - According to one embodiment, the present invention is directed to a method of reproducing a digital data, the digital data including a digital video data and a digital audio data, the digital video data and the digital audio data being composed of data units respectively, and the data units of digital audio data corresponding to at least one of: 1 ) a first type of digital audio data, and 2 ) a se
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