Doesn't work on any of my Xiaomi Mi Boxes. Basically, looks like it is loading, then stops, then does it again, and again then Playback Error, Retry or cancel. Was so excited to have this finally and it's USELESS.
After years of waiting, there is finally an Android TV app! Hurrah! Ideally, it would keep playing in the background rather than cutting out when you go to back to the Leanback launcher, but at least I can get rid of the sideloaded SiriusXM mobile app that required a mouse to operate...!
Didn't work after second launch. Tried relaunching, no luck. I can't say I expect more from Sirius given my experience in the past.
Added support for more Android TV devices.