I have the RCA cords going into my Peavey PV10 mixer, and then an Aux cord going into my soundcard on my computer (which is a fire breathing dragon computer from hell that I bought only 2 months ago, so I'm assuming it's not a PC problem). For some reason, I'm just now trying this a year after purchasing the turntable - Im plugging the turntable's RCA cords into a mixer and attempting to bypass the noise caused by USB interference. I get a very annoying high pitched noise when recording and playing back vinyl on it through my computer, after looking around on the internet I've concluded that its USB interference happening within the computer. I have a Numark USB record player that i've had for about a year now.