ive just bought a samsung ue46es5500kxxu 46 inch led tv with samsung ht-d4500 5.1blue ray home entertainment system but cant get surround sound through my tv either for normal tv or my tivo box,ive got hdmi cables and optical cable but cant work it out.what do i need to do in order to get surround sound.also ive noticed that only certain speakers work when i pllay somethin on the dvd,but when i did a sound test all the speakers worked,what am i doin wrong?