Comment 3 for bug 246800

Your pulseaudio could have set pc speaker as default sink as mine did.
Anyway i forced with uncommenting in the default.pa this, because killing pa daemon and running it from terminal complained that it something was using hw0,0 already.

  load-module module-alsa-sink device=hw:0,0

But it might work without this.

~$ asoundconf list
Names of available sound cards:
Intel
pcsp