Hi just wanted to notice that the (fairly old) Terratec Aureon Dual USB works withe RuneAudio ... partly.
As it seems that the USB-Card takes a while to initilize it messes up the mpd.conf (device "hw:1,") after booting - and RuneAudio can't output any sound.
After fixing /etc/mpd.conf and restarting mpd-service (systemctl restart mpd.service) it works and sound great.