It happens very often that my AW3000/10 speaker doesn't show up in AirStudio (or possible after a long delay). I have other UPnP clients, such as Bubble UPnP, that will find the speaker directly and send music to it, when AirStudio doesn't even think the speaker exists. Hitting Refresh in the app doesn't make a difference, but often turning the speaker off and on will fix the problem. Sometimes the speaker is listed in the Services area but not in the Play area...