HDMI audio from MSP

Sasha Harris-Cronin's icon

I have made a museum exhibit that diplays video and audio from Jitter via HDMI. I am also playing back a sound clip from MSP from sfplay~ to a dac~. I am using adstatus driver to try and force the the audio to go out the HDMI output. Unfortunately, it only works *most* of the time.

Anyone have suggestions on forcing HDMI audio output from MSP?