Samsung NV30CH0Q0B - Manual (Page 44)

Using the Computer 31
Step 3. Enable S/PDIF on the DVD program
To use 5.1 channel speakers, you need to install the Power DVD program from the
DVD Installation CD provided with your computer, then change the settings as per the
following.
1. Run Power DVD program and click the Settings icon ( ).
2. On the Audio tab, set the Audio Output setting to “Use SPDIF” and click OK.
Now, you can enjoy home theater using DVD titles.
To control volume for your 5.1 channel speaker, use the control on the digital
amp. (Please refer to the speaker manual.)