My receiver has 2 optical inputs, labeled as DVD and Audio 3. They are being used by my PS2 and XBox currently. I have just purchased the Panny rp56, so I'm short an optical input. I know they have some optical switchers available, ranging from $30 to $130, so I could go that route. I do have an a coaxial input on my receiver open still, but it is also labeled as Audio 3. Soooo, my dumb question is, if I buy an optical to coaxial converter (which are cheaper), and plug that into the open coax input, would my receiver work using both of the connections for Audio 3? Obviously, I would only have one device on at the same time. Or would the receiver see it as a conflict. BTW, my receiver is the Kenwood VR-507. Sorry if this question makes no sense or rambles on. Thanks in advance for any help or suggestions.