Wireless connect Airport Express to my wireless network
I have a Zyxel P-320W wireless router connected to my telecom modem, placed in my kitchen. My idea was to connect a Airport Express directly to my stereo receiver located in another room and then stream music from my Macbook Air and/or my iphone. Is this possible or does the Airport Express have to be physically connected to the wireless router or modem? If the answer is yes, this is possible how do I set the Airport EXpress up?