I just got NAD c541i cd player, then connect to my receiver Onkyo TXSR-601 by analog and optical(just for the fun of comparision). To hear through analog, I chose cd input on the receiver. To hear through optical, I chose DVD input. I have DVD player connect to receiver through coaxial and I have to chose CD input and Audio selection: coaxial to watch movie. Here is the strange thing, when I have DVD player turn off and listen to music through cd player, analog, if I chose Audio selection: coaxial, I am still here the music which it shouldn't be because I don't connect my cd player with coaxial at all? Some one please explain what is going on to me. Thanks.