X Media Player - Tutorials

The first way:  Open X Media Player -> Click Video -> Click volume -> Click up ,down  or mute

The second way( when the X Media player is playing a video):   
  1.   The control button will be displayed when the mouse is placed at the bottom of the player
       2.    Place the mouse over the sound Icon and scroll the mouse to adjust the volume, Clicking the sound Icon turns mute on and off.