Hi I have a Toshiba 32ZD26P. The sound on this tv is poop. What I am after is to run a sub and two satellite? speakers. Can I just plug into the back of the tv or to my Sky box. I was going to try my computers speakers but there is only one lead into the sub and on the tv, left and right outputs. What is the easiest and cheapest way of doing this? ( I dont want surround, just better bass and treble) Any help appreciated.