A more flexible solution here is to use rooMax’ Webhooks functionality combined with RoonCommand. Running a webhooks server that calls RoonCommand directly via shell commands allows you to basically find and play anything in Roon – and tie it to a button in rooMax. I currently use BetterTouchTool on a Mac to serve up the webhooks, but webhook is a free, fine and lightweight alternative.
Discussing this further may be a bit out of scope for this rooMax support thread, but feel free to open up a new one if you have any questions,