markbuntu's post was for KDE 4.1.
As of KDE 4.2 (available in the backports), the only thing needed to get PulseAudio working within KDE is making "pulse-session" run before KDE launches using the following command in a terminal:
Code:
cp /usr/bin/pulse-session ~/.kde/env/pulse-session.sh
Then after restarting KDE, Phonon devices(not just the "PulseAudio" device) will map to PulseAudio devices instead of ALSA devices.