Hi folks I got my self great big new tv samsung but sound on it is not so great ..... was looking at sound systems to go with sky HD +tv and have got my self all mixed up I do not need a DVD player just good set speakers etc was looking at creative 750s but does it have a decoder built in ? ... Logitech Z-5500 , sony etc any ideas room size 21 ft x 14 ft sq......... thanks Y I MAN