Sony VGN-SR31M/S User Manual page 210

How do I output the Dolby Digital or DTS sound through an HDMI-compatible device?
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This Q & A entry applies to models with the HDMI output port only. See the online specifications to find out whether your computer is equipped with
the HDMI output port.
To output the Dolby Digital or DTS sound from a disc through an HDMI-compatible device connected to your computer, follow
these steps:
1 Click Start and Control Panel.
2 Click Hardware and Sound.
3 Click Manage audio devices under Sound.
4 On the Playback tab, select the HDMI icon and click Properties.
5 Click the Supported Formats tab.
6 Click to select the DTS Audio and Dolby Digital check boxes.
7 Click OK.
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If the Dolby Digital or DTS output is connected to a device that does not support it, the device will not play any sound. In such a case, cancel the DTS
Audio and Dolby Digital check boxes.
Why do sound interruptions and/or dropped frames occur when I play high-definition
videos, such as those recorded with the AVCHD digital video camcorder?
Playing high-definition videos requires substantial hardware resources, such as CPU, GPU, or system memory performance
on your computer. During the video playback, some operations and/or functions may become unavailable, and sound
interruptions, dropped frames, and playback failure may occur depending on your hardware specifications.
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Troubleshooting