Stationhead (https://www.stationhead.com/ https://www.stationhead.com/) has been something similar for awhile. However, they use Spotify's API to sync your Spot

Stationhead (https://www.stationhead.com/ https://www.stationhead.com/) has been something similar for awhile. However, they use Spotify's API to sync your Spotify app with the rest of the listeners on the station.