Forgive my nebulous use of "feedback". I merely meant that changes in Rhythmbox were pushed to Pulse, and changes to Pulse were pushed back to Rhythmbox. Not that they fed into each other in series. I will admit that this echoes into the other thread, though: since this is apparently expected behavior, I have the curious experience that changing the volume knob in Rhythmbox changes my main system volume, when Rhythmbox runs alone. But I believe this thread is at an end, since you had discussed the per-app volumes with me in the other thread.