I am currently having a problem with my Traktor S4 working with my HP Dm4t Laptop. To begin, I'll rattle off my computer specs:
• Intel(R) Core(TM) i5-540M Dual Core processor (2.53GHz, 3MB L3 Cache) with Turbo Boost up to 3.06GHz
• 1GB ATI Mobility Radeon(TM) HD 5450 switchable graphics [HDMI, VGA]
• 8GB DDR3 System Memory (2 Dimm)
Now, let me explain my situation. I used to run Traktor 2.1 or 2.0 in Fall of 2011, and it ran just fine. No crackling, no audio drop-outs... Nothing. Now I upgraded to Traktor 2.5, and I'm having all sorts of audio drop-outs and crackling. However, when I ran a cached version of 2.1, I WAS STILL HAVING audio drop-outs and crackling.
The oddest thing is, I've adjusted latency, my CPU is never in high percentage usage, and my load usually never passes 1/4 of the bar. My computer specs should be more than enough to run Traktor fluidly, and it has before. But now, just recently I've had problems running Traktor 2.1 and 2.5. If I turn off my wi-fi, and close all programs then I can get it to run without crackling, HOWEVER, I never had to do that before...
Any suggestions as to what the problem may be?
I do not believe it is my CPU or background processes.

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I bought a Traktor Kontrol S2 the other day, last night was the first time using it.
The headphones were not working, neither was the mic.
Any reason why these things were not working??
It wasn't an issue with the actual headphones or mic themselves as i tested others.
The mic input wasn't even showing up on Traktor.
My setup was, Traktor Kontrol with RCA cables directly to amp, and amp to speakers... am i missing something?
Do i need a mixer? it thought the S2 was a mixer in its self.
Please help! It's driving me nuts!