It would be simpler and less demanding to Astral sistems (I assume) if we could just add spotify music to our campaings so it already has remote tools to control music, ambience and sound
Spotify has rules against streaming in this way. It is against their Terms and Conditions and can get you banned from their service.
The issue is licensing of the material that you stream from their service. If you are re-streaming, such as for a game so that your players can listen in, you are broadcasting.
Also, there is already a Feature Request for this type of service here: https://support.astraltabletop.com/t/streaming-audio-through-the-audio-player/6085
Please post your comments and / or votes on that Feature Request instead please.
// Closing as duplicate.