Sadly i can’t help you, but hopefully what General lighting said might’ve helped a bit. I, myself bought a Numark Mixtrack Quad a few weeks ago which came with a copy of Virtual DJ LE although i downloaded Serato too. Which i haven’t even moved out of my download folder and i tried traktor a while ago. Truth is i really hate using a pc and controller. I bought it as i have a HUGE collection of Reggae and Soul that i just don’t have on vinyl so i thought it’d be a great way to mix up some of my mp3’s for personal listening. It was fun for the first week, but i just felt like i wasn’t doing enough and regardless of how flawless the mixes were it just didn’t give me the goosebumps i get from doing the same with vinyl and doing it all by ear. Fair play to the VDJ’s that do it as there’s some pretty good ones out there and i’ve heard some great mixed sets using serato, vdj, traktor et al and know a few radio dj’s that use said software. Sadly, my new Mixtrack quad is not even connected to my pc anymore and is sitting on top of a pile of vinyl. The irony being that in a week or 2 it’ll be the vinyl sitting on top of the controller lol. Anyway, sorry i couldn’t help and all i could offer in advice would be what General lighting said :S . Hope you find the help you need 🙂