So I just bought a Samsung HT-E3500 blue ray surround sound system and I

have a question.? I'm yet to buy an RCA cable because it was not included. I was wondering after I do purchase it. Will I be able to use my surround sound while watching regular TV, as appose to just being able to function while using the blue ray player. I'm hoping it works in both ways. Does anyone have a concise answer?

Thanks in advance.