After almost 2 days of trying to figure this out I wanted to share my experience for any other apple users having the same problem with their airport express devices either not connecting anymore or cutting in/out when streaming music using Apple AirPlay.
THIS SOLVES THE PROBLEM!
1. Go to www.orbilogin.com and login into your admin account
2. Click on the ADVANCED tab
3. Then under the menu click ADVANCED SETUP
4. Click on WIRELESS SETTINGS
5. UNCHECK the box Enable Daisy-Chain Topology *(I only have 1 satellite so this may or may not be applicable to your set up)
6. Click APPLY and your router will restart with the new settings.
7. Once your router reboots, factory reset all apple airport devices and resync to your network.
8. This step may or may not be applicable to all users but it did also assist in solving my issue: I also changed the frequency of my 5GHz channel from 48 (default setting) to 44. You do this by going to the BASIC tab in your admin settings (www.orbilogin.com), then click on WIRELESS to edit the 5GHz frequency.
Everything worked perfectly after that. No more dropouts with AirPlay on any of my airport express devices which I am currently running 5 (both 1st & 2nd generation work perfect now)
Hope this helps any Mac users!
