yes, the macbook has analog out, but that is mini-jack stereo. i'm under the impression that only an optical line will allow me to get 5.1 surround, short of something like a firewire converter. is this correct? i don't want to be feeding my speaker sytem through a receiver box, so if i can't just plug the klipsch in directly and get 5.1, i'll go with the logitech.