Music Assistant offers a choice when a Spotify account is already playing on another speaker: stop there and play here, or leave the existing music alone. The new dialog replaces a message that told the listener to stop the other player themselves.
For ordinary play or replace requests involving a track, album or playlist, the server checks before loading tracks or replacing the destination queue. That avoids waits of up to 45 seconds for a playlist that cannot start. The takeover choice appears only when the listener can control the other player.
Artist playback, shuffled selections and some queue actions are checked later, so they lack the same protection for the destination player. Retrying Play Now while keeping the queue can still add the requested items twice.