My mate gave me his American DJ Q-2422/SX until i finish saving for my xone 62 as sound quality from my mixer has gone downhill rapidly, and i was wondering 2 things really. What are the following: -2 sockets on the back which look like your standard 3.5mm socket which says "Player Control". Wtf is this? -1/4 inch jack which says "Light Control". Does this mean i can whack a music controlled laser/moonflower/strobe or something in there or what?