I've a soundbar made by LG in the living room,
It got an internal chromecast.
While using my Galaxy Note9 connected to the Wifi I can switch my spotify device from the phone to the soundbar and to my mac's desktop app.
However with my Mac's desktop app I can't see any device - none at all.
I'm connected to the wifi (same network) and since I'm able to change device from my Note9 to my Mac I know that I'm properly connected and set.
Solved! Go to Solution.
Thanks for reaching out to us about this.
It turns out that it's currently not possible to cast to your Chromecast via desktop.
There is, however, a popular idea for it in the Idea Exchange - make sure to add your vote to it here!
In the meantime, as a workaround, you should be able to cast through the Spotify web player in Chrome.
Hope that helps! We'll be here in case you have any questions 🙂