The Structure of DVD-Audio
As noted above, a DVD-Audio disc is a DVD-ROM disc that includes a special zone (the Audio_TS folder or directory) for DVD-Audio material. A DVD-Audio disc may also include a Video_TS folder for an optional DVD-Video zone, as well as a DVD-Others zone for applications and data (e.g. a browser for Web connectivity) that may be accessed from a computer-hosted DVD-ROM drive.
From: _http://www.sonic.com/pdf/wp_dvd_audio.pdf
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Infos : _http://www.digitalaudioguide.com/dareview/players.htm