Any DJs in the house? Or rather, aspiring DJs? The deal you’re looking at today is made up of two parts. The first is the Griffin DJ Connect device that splits your audio so that you can have one signal go to your sound system, and another to your headphones, which is just about the most basic and essential ability that DJs require. To go along with this piece of hardware, you also get a download, which is Djay for Mac. With this application, you have access to some more advance features like Harmonic Match, which detects a song’s key and allows you to match it with songs in the same key. Normally $119, you can get both of these for $89 today.