djay is such a brillant app, Apple even awarded it Winner of the 2011 Apple Design Award and now it’s been updated to take advantage of the awesome retina screen of the new iPad plus it has improved effects. This is a free update but if you haven’t already downloaded this app, you can do so here. It retails for $19.99/£13.99/download   djay transforms your iPad into a full–fledged DJ system and seamlessly integrates with your iPod library, giving you direct access to all your favorite tracks and playlists. A hyper–realistic touchscreen interface and ultra low–latency converge to offer you a true professional mixing experience, all with your own music.…