Help please. I am trying to stream music from my imac to my newly purchased airport express which I have connected to my existing hi-fi. However, I am having lots of problems. I have tried setting it up in Client mode by first connecting it to the ethernet port on my wireless router. I use the option of adding to an existing network rather than create a new network. The AE connects fine in Airport Utility whilst it connected via a cable. However, as soon as I unplug the cable it does not reconnect via the wireless network even if the AE is right next to the router! I have been trawling through the various threads and have turned off IPv6 but still it is not working. I did also try setting it up as a new network without an internet connection and this seemed to work fine for a short period. The light on the AE flashed orange, but I was able to stream music to it. However, when I tried the next time, Airport Utility was not able to find the AE. I have also purchased a new Philips Fidelio AD7000W Airplay speaker for streaming music to another room and am having similar problems. I can connect it to my existing wi-fi network, and stream to it from itunes. However, sometimes the device appears "greyed out" in itunes i.e, I can see it on the list, but cannot stream to it. I normally switch the speaker off then on and sometimes it reconnects, other times it does not. The AE also appears greyed out in itunes when it is not connected. Finally, I have the airplay Remote App installed on my iphone 4. However, I cannot get it to find my itunes library on the imac even with home sharing turned on. Can anyone help please!