Main DJ laptop that fall under Plan A
  Netbook computer is to run like a CD player for timeout. This is so the DJ
  can take a break or incase the main laptop locks up.
  For Car Shows it runs as a secondary system to auto play music.
  Remote laptop - the remote person can seach for song request on the spot.
  Plan B laptop, this is the back-up laptop to back up the main laptop.
  A second controler can be added at a later date.