Hi...there,
Very simple just plugged your audio cable to your lcd monitor jack , then do the same to your pc audio jack. From the front (with picture of a headphone) or from the back (green audio jack) To settings the volume control open the on screen display from the lcd monitor and look for volume settings. or go to your toolbar bottom r/h side look for the icon of a speaker and click on it...and that it... have nice a day!