about setting up fs in clubs/parties i guess a good solution would be to buy fsbox separately, like they do for the records. that would allow the club to make some proper plugin of the wires, and the guest dj would only have to plug his computer on the usb and bring his records.
that would also allow all the "free soft addicts" to get the hardware they cant build themselves and get an illegal copy of the soft, so fs box would lose its anti piracy thingy.
about the problem of bringing laptops in parties, dave is right the comps are not designed for such environment, but its been many many years people use to bring laptops for live PAs so so i dont thnik they will stop doing this once FS is among us.