http://uxmag.com/articles/the-psychologists-view-of-ux-design
I have been DJ’ing for over 10 years. I started out with turntables and vinyl then slowly transitioned into using a computer. I use Sertato and turntables just for beat-matching and playing tunes. I recently got sick of looking at all the extra crap they have in the interface and decided to re-design it with only the stuff I actually use.
Here is the original:
Here is the redesign: