Watching TV and Recording How Do I Change Channels? You can change channels by entry of a desired channel number or by using the up and down arrow buttons on your Nuclius remote control. Adequately the channel number/name currently showing will appear on the screen for a few seconds. Turning On Audio and/or Subtitles When watching a TV program, simply press the yellow button on your Nuclius remote control to bring up the Audio/Subtitle panel. Use the up and down arrow buttons to move along the audio options and highlight the desired audio language, then press the Enter/OK button to activate the selection. Apply the same procedure for activating the Subtitles.