PulseAudio can only use 1 device at a time.

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https://bbs.archlinux.org – I have enabled "simultaneous output" in PulseAudio Preferences, I run pasystray(pavucontrol for volume), and want to use both HDMI-output as well as internal output in different application at the same time, but sound configuration (both pavucontrol and phonon) only lets me activate 1 device at a time (by selecting card profiles). If I select "Builtin Audio Analog Stereo" I only get sound from my internal speakers or headphone jack, if I select "Digital Stereo (HDMI) Output" I only get sound from my HDMI-output. Also I only get the selected device as options when (HowTos)