I have used an airport express in my house for sending to a receiver that powers speaker throughout my hose, and love it. However I have recently moved my received next to my router. It seems so pointless to have a wireless connection for about 4 inches. I was wondering if an ethernet replacement exists. It would only need to have an audio out jack. I ask because I need to get another airport express for travel, and I could replace the one I am currently using. Also one more question I am not great with networking, but I am running out of available ports for my airport extreme and need to know what switches play well with the apple. Any suggestions?