...and ideally, I'l like to pipe the audio from the XM Direct through the AUX input on the empeg. If that's not possible, it can be fixed via a relay on the empeg/XMD inputs to the amp and a 12V switch, but I'd rather the empeg handle the audio switching, if possible. At any rate, I've got absolutely no Linux coding experience, so any recommendations as to where I should start, haha?