Copy, empty and load deck all with one button (LOAD A/B). Scroll through the music with the jog wheels when decks are empty.Middle track button adds tracks to sidelist instead automix. Plus more stuff.
This is a mapping for the Launchpad "family" (base, S, mini, Pro); it's a 8 pages controller, it can works with 2 o 4 deck, with or without other controller. See instructions in Comments