In one room I have a Airport Extreme Base Station hooked to two computers and a printer. In my living room I have a TV/Surround Sound hooked up. I have an Aiport express that I am not using. I wanted to be able to pug the AE into the outlet by the tv and hook it up to the stereo using the 3.5mm jack and hook the ethernet cable to the TV. I basically need to just relay the ethernet between the AEBS and AE. Is this a bridge? Im not an expert in networking. I dont want to run any ethernet cables throughout the attic either. I included a diagram to try and illustrate what I need.