I just got a set of logitech 5.1 surround sound speakers for my PC (i know boo hoo). I'm going to be getting the new iBook during the summer and I was wondering if I would be able to hook them up to it? I notice that there is only one port on the current iBook and even the MBP, and my speakers require 3 ports.....so is there an adapter I can get so I can hook them up to my future laptop?