Ok so I have been pulling my hair out for months over this.... My setup is 2 cdj 400's, a korg zero4 mixer, macbook, traktor scratch duo 2, and audio 6 dj soundcard, and kontrol x1. I know my mixer is a bit outdated but there is no reason this should all not link up and make me able to record my mixes. I have gotten all the settings right before in traktor but when I pull up the record function it is unable. My mixer only has one record out which I use to hook to my speakers via rca. I even bought rca splitters so I have one going into my speakers and one going into my audio 6 soundcard. Any help would be greatly appreciated!!!!!!!!!! Help me out!!!!!!!!!!!!!