# Adjusting Volume

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The Nx Witness volume level affects these System actions: Speak, Play Sound, and Repeat Sound.

To adjust playback volume, use one of the following:

•Click-and-drag the Volume Slider to the right of the Timeline

•Use a Mouse Wheel by clicking on the slider

•Use Ctrl+Up or Ctrl+Down

•Click the speaker icon (shortcut M) to mute or unmute.