After setting up an Airport Express, any sound played from the iPad (ipod and movies) will be mute when it is supposed to stream to the APE. Playing itunes music from a Win7 laptop to the same APE works fine. But for some reason, the iPad music seems to be muted. Even at max volume, there is no sound. Any ideas as to what might be the cause of this? The following devices are used: iPad 3G 32GB with 4.2.1 APE firmware 7.5.2 (?) updated today The APE used to be part of another network, but due to massive trouble, it now create it's own unique wireless network, but still doesn't work properly.