I'm looking for a switch that will accept both analog (specifically rca) and digital (optical) audio inputs, but will output both over optical. I've found several that will accept both types of inputs, but will only output analog over an analog connection and digital over digital. IE, it has two outputs. If the source you select is analog, it only outputs over the analog output, and if the source is digital, it only outputs over the digital output. Anyone know if such a beast exists? I haven't had any luck finding one. I have found analog to digital converters, but I'd really rather have one unit that accepts both and outputs both over the digital connection. Thanks in advance. PS, a purely audio switch is fine for my situation, though one that did audio and video would work too.