Using Apple TV & Airplay to Projector with no audio
I am using an Apple TV mounted near and connected to a ceiling mounted projector with an HDMI to DVI cable. Since there is no audio in the DVI connector and anyway the projector has no speakers, I am unable to hear any audio from inputs from any iOS device which connects to the Apple TV and the projector. Most of the time this is OK, but there are times when I would like audio. It is impractical to mount a separate audio amp and connect to the Apple TV via the digital audio connector because it is a very high ceiling and it would be more trouble than it's worth to install speakers, etc.
What I would like is to be able to tell the iOS device to keep the audio available to its headphone jack. Is there any way to do this?