Since you’ve set the default player here, it will also be set to Spotify on your Google Home if you’re logged into the same account. Your changes save automatically, so you can close out of the Google app as soon as you see a notification at the bottom of your screen that alerts you that Spotify is the default music player.
You can also access this menu in Settings > Spotify > Siri & Search.
You can also set Spotify as your default music player in the desktop clients and web app, but some positions and appearances of icons may differ.
Once you select “Spotify,” that file type should be associated with your music player, so any time you open that file type, it should open in Spotify. [4] X Research source
