well, i don't have 4. nor do i have the nexus cdj, nor the nexus mixer. but yea, if you have it: first off: it's impressive. like, that's the main thing. it's an impressive setup. 4 cdj 2000 nexus and 1 djm 2000 nexus and 1 effects unit.. don't know the name of it. it's all really impressive.
so yea.. samples.. and with the new nexus mixer and cdj's you can have 1 cdj as the master, and the other 3 just following it's bpm. imagine cdj2kn:1 playing the vocals of song 1. cdj2kn:2 playing the instruments of song 1. and the other 2 for song 2. so, now you have 2 songs with control over their vocals and instruments in 2 separate players. and with master/slave sync, you can start song 1 voice and instruments synced up playing, then sample off some parts with the nexus mixer, then crush the instrumental of song 1 and fade in the instrumental of song 2.. again .. all synced up. "hits of the 80's.. with a style so crazy" yup, that's how i would do it, if i had it. it's like live studio recording. with master sync. a feature the cdj 2k mk1 doesn't even have the buttons for.