We recently purchased a new router, which has much more coverage than our previous setup. We have been using an Airport Express connected to our stereo to stream music from our computers. Right now it only works within the range of the Airport. I was wondering if there was a way to connect the Airport Express to our router, so that whenever we're connected to the internet via the new router, we can stream music to the Airport. As in we the computer has a wireless connection to the router, and so does the Airport, enabling us to stream music to the Airport. Step by step instructions would be helpful, and screenshots if possible.