Really need some help guys and gals

Alright now I know everyone is probably sick of hearing this question but hear goes.

I recently bought a Legacy LM71 LCD Monitor and molded it into one of my dash pieces.. I dont have a lot of money so when I saw this I just bought it and thought it would be good...When really I am not entirely happy with it but decided to live with it..

Well before I go and buy a bunch of things I need to know a thing first..

Exactly how do I wire this thing up so I have sound coming out of my system.. The sound out of the monitor is shit!!! and wiring it up to the system would be awesome.. ..I dont know if this will help but I also have a CD changer that actually runs off through the radio... casue thats the way it was wired up when I bought the car...

Yur help is greatly apreciated everyone.. THANKS IN ADVANCE!!!