Comment 1 for bug 1801505

Hello,
Yes, I can see that.
Spotify probably sends several START/STOP messages (in various forms) to the Dbus. Audio-recorder reacts to those messages. I will debug and study those DBus messages when time.

Good you noticed that audio-recorder reacts to volume change in Spotify. Again Spotify sends messages to the DBus about the change.

For your info:
Messages on DBus are defined by the MPRIS2 standard.
Ref: https://specifications.freedesktop.org/mpris-spec/latest/

// Moma