I fed the music from a player piano back thru a whole house audio system once and have avoided it since.
The piano would also do vocals through the speaker under the piano and after spending a fair amount of time dialing in a song to get it decent the next artist sounded horrible.
I did use a volume limiter so that the piano didn’t cause damage to the house audio. I figured it would be similar to a dj plugging into the bar audio and turning it up to 11
I’ve got one right now will show the concert on tv as the piano plays. So working on that one now and just like SBS the piano has no wiring in place. Of course the piano needs a network connection as well.