Airport Express shows Green but iPod/iPad won't connect

Hi Folks,

Airport Express shows Green but iPod/iPad sometimes won't connect. The Airtunes iCon is missing. Rebooting the iPod or iPad brings my the problem so my Airplay/Airtunes icon seems to just "go away" intermittently. I'm using the Airport express as a bridge along with a Belkin N600 wireless router.

Any thoughts?

Thanks so much.

Greg