How can I set the volume controls to my audio device instead of controlling the TV?

By default, an audio sound will be set to Internal TV Speaker. To change this, follow the below instructions:

1. Press the SETTINGS button on the remote, and select “Settings” menu item, then “Sound”, and choose “Sound Out”.
2. Then press WHEEL or ENTER to select the appropriate external audio device.
3. Now you can use your TV remote to adjust the volume and mute the audio device.