It would be nice if I could assign some particual sound device in Phonon - e.g Nvidia HDMI output to some particular desktop - .e.g that's one conected to hdmi graphic output, that's way I could drag&drop e.g kaffeine window to external screen and it will automatically switch sound output to TV audio system, while Amarok which is still on laptop built-in screen should use my intel sound device and play on built-in speakers. Naturally it should be configurable, not only constant assigned.