New wireless network - now my airport express and airtunes does not work

AirPort Express

• How to set up and configure AirPort Express for AirPlay and iTunes
• AirPort Express FAQ
• Difficulty joining third-party network that is using WEP
• What is client mode?
• AirPort Express: How to join an existing wireless network in client mode

AirPort Express

• How to set up and configure AirPort Express for AirPlay and iTunes
• AirPort Express FAQ
• Difficulty joining third-party network that is using WEP
• What is client mode?
• AirPort Express: How to join an existing wireless network in client mode

use your airport utility, it will guide you thour the setuo, remember, gate way or bridge. you need both, but you need to choice witch one.

are you using windows?
turn off your firewall.
if your using a mac it should find it once you install the software for it.

Try running a Cat5e cable between the two routers.

From my reading at the Apple support web site, it appears that you may need to download the latest version of the Airport Utility in order to get around this issue.
Additionally, Apple has just recently come up with an update to the firmware for this device.
Try downloading the latest version of the Airport Utility (Mac or Windows) and see if that doesn't resolve the issue.
After installing the latest version of the Airport Utility, try to connect to the Airport Express. If that is successful with the new version, click the "Manual Setup" button to display the "Summary" page for the Airport Express.
Next to the entry for "Version:" there should be a button to press to upgrade the firmware to the latest version (7.5.2). Perform the upgrade by following the on screen directions.
After the upgrade, again attempt to connect to the Airport Express using the Airport Utility. This should work as expected.
Before attempting to use the AirTunes (recently renamed "AirPlay"), make sure that you have the latest version of iTunes installed.

Reboot both devices.

try setting it up on your iPod Manuel instead of selecting the router from your iPods list hit the other box the enter your routers name encryption type and your password and see if that works hope this helps

You need to use the AirPort utility, which will walk through the setup and configuration of it. You were already on the right track to get it going. If it mentions there is an update available for it, though, do the update first.

If the router does not give an automatic ip address via dhcp and you cannot connect to router menu, the router is dead buy a new one