[PROBLEM] How to keep HDMI audio stream alive?

[Nutul]

Could this configuration work without conflicting with moOde + camillaDSP automatic reconfiguration behaviour?

* Put an ALSA mixer (dmix) in front of the HDMI hw device.
* Play /dev/null into the mixer (launch this after alsa is ready - where?)
* Output camillaDSP to mixer

I am not yet clear how/where to actually configure this, but if the idea is sound I'll work that out next.
(I am very happy if this requires fixing the output channels, rate & format!)

It should theoretically work. The only problem I see is how to tell who to play to the mixer...