okay i was at home and i took some sony speakers, sony made them between 6 and 10 years ago. it is an all in one type set up that included two towers, a center, and two surrounds(sub was optional) the pro logic processor was in one of the towers. from my parents.My problem is getting them to use 5.1. My cable box and ps2 both have digital audio outs but these towers only have rca inputs. You can send it 5.1 but you need six connections ie front,center,sub..... So the question is do i need some sort of reciever to take in the digitial sound and put it into those 6 connections, and is there any cheap setups that'll work. Thanks for the help, if this is too vague just ask. and any ideas of solving this cheaply?