I have been trying to get my Yamaha receiver integrated in HE for some automations, mainly to switch hdmi inputs for displaying ip cameras on my tvs when motion was sensed.
I downloaded the Yamaha receiver drivers found here and other sites, but could not get the hdmi source to change reliably. After some online searching I found a pdf listing the api's for yamaha receivers with MusicCast with instruction on how to use them. I didnt really need the virtual device setup in hubitat. I only needed the 'get' url's to put into rule machine. I have it working perfectly now. Maybe this will help someone looking them.
