Instructions
Press the "Power" button on your PS3 gaming console to turn it on.
Scroll the "Settings" option in the XMB main menu, then select the "Sound Settings" by pressing the "X" button on your game controller.
Select the "Audio Output Settings" option, then select the input option that matches your surround sound connection type (such as HDMI, Optical). Press the "X" button move to the next screen. The Audio Output Format screen will open, showing the direct format options to which you can adjust your PS3.
Select the desired format option for your surround sound system and your personal taste, then press the "X" button to save the settings.