Analog and digital audio output at the same time

We have the optional application paprefs that allows to install a virtual output device to pulseaudio. This enables simultaneous output to all attached sound cards/devices:

The additionally created audio output device for simultaneous output may be selected in the "Output" tab from pulseaudio sound preferences menu:

From the command line we can also load the device for simultaneous output without having to run paprefs by

pacmd load-module module-combine-sink
# pacmd load-module module-combine # for PulseAudio < 1.0

Put this line (without pacmd) in your /etc/pulse/default.pa to load this device at startup.