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[Rugby (aka Daniel or Big Dan)]

As mentioned last March by BlackJack:

@BlackJack

Squeezelite/Software endpoints
Roon does not support software implementations of squeezebox endpoints, and we do not test with them as part of our QA process. If you attempt to do this, you are on your own.

Given that Roon will probably not spend time on unsupported implementations, you might want to try using one of the Location icons for the zone. You can edit the Zone Icon in the Zone Settings.