Djay 4 for Mac is out, and it's good. But let's see just how good it is. A good test of a quality of a piece of gear is scratching - it's visually more interesting, and shows a lot more than knocking out EQ and mixing with sync. So imagine my joy when this clip of acknowledged scratch legend D-Styles turns up pitching him, armed with djay 4 and the entry level Vestax Spin controller, against DJ Cyberia and a QFO. For some, the end of days just happened in this clip.