i just bought a new LG Scarlet and i can't hook my Panasonic home theater SA-PT750 surround sound to the tv. the outputs i have from the tv is digital coxial and digital opitical. now is there some product out there that goes from a L and R rca audio into a single digital or optic cable? by the way surround sound receiver doesn't have the digital coxial or opitic input or output. what can i do to get my surround sound going for my tv and ps3?