The only time “specific hardware” comes into question is when you want to use timecode. I currently am using Traktor Pro 2 with my M-Audio Xponent, and will move on to those new modular controllers from Behringer when they come out.
If you want to use timecode, then you either need to buy one of NI’s audio interfaces (and the timecode), or get a mixer that’s certified for Traktor Scratch. They have a list on their website. Remember though…you want TRAKTOR SCRATCH CERTIFIED if you want to use timecode. “Traktor Certified” only means there is an included midi mapping in the software for that particular controller.
TraktorBible.com is also a great resource for mappings to use on different controllers. It’s where I got my mapping for my Xponent.
With purchasing Traktor, you can only install it on two computers per license. So I have it on my desktop and my laptop. Not sure if you can transfer a license, but I think it’s possible. I did do it a long time ago when I sold my Final Scratch setup on eBay. I included the Traktor DJ Studio software. I simply unregistered my name on the Traktor website, and thus the new owner could register herself with it.
I’m going to do the same with older versions of Torq when I sell my Connectiv/Timecode, and later with my Xponent.
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