I have a no-name wireless router in my walk-in closet which is the entry point into my home. Works fine, but is a little on the weak side on the main floor. I had an Airport Extreme sitting on my hardware shelf. Another room on the other side of the house is plumbed with ethernet directly to my no-name. So I decided to hook it up the ethernet cable and thus, now have 2 wireless networks in the house. My wife gave me a Sonos wireless speaker system that also came with a "bridge". The Sonos seemed to work fine by itself, but since I had the bridge I decide to hook it up to my Airport Extreme and it also works fine. Enter my Airport Express that I bought for traveling. It's the latest model. I've tried several attempts to hook it up, but can't get to first base. Following the directions using Airport Utility on my iphone, I can "see" it, but it displays an error. When I go into "settings/Wifi", the Express doesn't show up like it does in videos (youtube). I'm wondering if the Sonos Bridge described above is creating a conflict with my Express.