I'm currently looking at the Yamaha 5540 Receiver. The 5540 has one coaxial digital input and one optical input. My DVD player only has a coaxial output. The thing is, on the back of the Yamaha, next to the coaxial it says CD, and next to the digital it says DVD. My DVD is coaxial, so I'll have to plug it into the one labeled CD. Does this mean I will have to put my Receiver into CD mode to hear movies through my receiver? Simple question, but thanks! Kevin ps If anyone knows of a large difference between the Yamaha 5540 and 5550 other than component video switching, please let me know.