Two airport express
Can I have two airport express at my home? I want one in my living room to play music on my Bose speakers through my HD TV. Do I just set it up as another network?
AirPort Express 802.11n (1st Gen), Windows 7
If the goal of the second AirPort Express Base Station (AX) is primarily for iTunes streaming, then you will want to configure it to join the wireless network provided by the first AX. This way you will not have to "switch" wireless networks between Internet access and streaming.
Please check out the following Apple Support article for additional details.