I listen to XMas music via Spotify through my Roku Ultra so it plays through my surround sound. The Spotify app is so boring looking!!!
Is there a way to have the music play but a screensaver or something on the screen? Preferably I would be able to have one of the fireplace videos from YouTube playing but IDK if the device will even stream 2 apps at once!
There isn't currently a way to display more than one streaming channel at a time. I might recommend following up with Spotify support to see if they have any additional settings or options within their channel that may allow the functionality you are looking for.
(On a separate note, I edited the Roku Ultra product you associated to this post. You'll want to double check the model number for any device you associate to a topic, to ensure you are selecting the correct model of device for those that may share a name. The model number is visible in Settings>System>About on any Roku device.)
Feel free to send me a private message if you have any other questions I can help answer.