I don't have a module, I usually only control the LED color through them rather than anything else like volume or actual muting.  Most of that type of control I prefer to do directly on the DSP system, but clients like the LED to track red/green when muting it, so I mute on the DSP and then just send the command to turn the LED color to red/green to match the mute state on the DSP.

I only use simple SIO for this, as there is nothing more to it than the commands.