[dreamon100]

Hi, I bought a Logitech Z5450 surround sound system because of the wireless rear speakers. It has connected to the dvd player via a digital coaxial cable and works fine.
The problem is identifying a cable to use between the speaker control centre and the Samsung lcd tv.
There are no RCA phono sockets in the control centre. On the tv there is a digital (optical) audio socket and on the control centre also a digital optical socket, however although they are both square the tv one is bigger.
Can anyone identify a cable ( in laymans terms ) that will do the job ?
Thanks in advance.