Yeah, paired doesn’t mean it’s passing the data for the music – should be a ‘output’ type option either in the app playing or in the system settings to select it as the producer of noise.
A fine example this week with a Jabra external speaker/mic and a Mac. Plugged it in and zoom, defaults to use it as both speaker and mic, google meet, defaults to use it as a speaker and the internal mic, slack just uses the laptop until told to do otherwise, sigh….
Also, isn’t windows 7 no longer supported? It’s 10 or die now, you might be missing some drivers/a version of Spotify that can actually do the work?