DDJ800 NO AUDIO

this is my very first ever controller a well known dj in the uk recomeneded pioneer gear to me as its industy standard as he put it I have no sound coming through the XLR to JACK  on my line in to my laptop for when i am live streaming with OBS note i also have the usb pluged in as well 

would i be right in saying that i need to use the RCA for the  line in instead off the XLR to JACK for using with OBS 

can someone point out to me what or were i am going wrong  thanks