I thought of that, the speakers support IR in, but honestly I might change the settings once or twice a year. The added cost is not worth it.
Here is what I did..
Macro|
if|isequal##{{clientname}}##remote0##SetVariable|remote~28##SetVariable|remote~29!
Control|{{remote}}~SendIR~Definitive Technology-Mythos ST-L Tower Speakers~LEFT BASE PLUS!
It works fine and is checks one item off the list of things that need to be added to the Smartremote.