I've got At&T U-Verse with HDMI to a Projector and an A2DP Bluetooth transmitter from the U-Verse box going to a Bluetooth speaker.
I've got a few issues. First the bluetooth is causing a slight audio lag and I'm not sure how to sync it up.
Second, the U-Verse remote requires a code to learn the controls of the projector, but its not a hexadecimal code. I have the code for the projector remote, and don't for the speaker. I could run the bluetooth transmitter off the audio output of the projector to solve the control of the speaker, but the projector's audio is on time, so turning them both up creates an echo.
So if I can solve the audio lag, and teach the U-Verse remote control of the projector, I can solve my issues.