I do not like that when I click on airplay it reconfigures audio and stuffs it in as main out. It is nice enough if something is playing to warn me that it wants to reconfigure audio. If not playing it just brings up the audio config dialog with my preferences wiped out.
I guess since airplay cannot currently be set to pre-cueing it assumes main and reconfigures. However the user would not know that just by clicking on it.
I think it should launch the audio config menu and then allow this as an option rather than just assuming I want that.
Although I do not need airplay as pre-cueing it is unclear to me why this could not be an option. At lest if it were it could stop assuming I want to reconfigure main out just for clicking on it.