When I first played with PiPlay, I was hooked up to an HDMI TV and audio worked fine.
I'm now trying to use the analog audio jack, and I'm having no luck. All of the HDMI settings in the base config are commented out.
If I manually test the audio in the command line, I get nothing. So I execute amixer cset numid=3 1, and test again, and it works fine (just a speaker-test)
But I CANNOT get that to stick - as soon as I exit back to PiPlay or reboot, I get no audio again.
in /boot/config.txt you can try adding this line hdmi_ignore_edid_audio=1
you can also force audio through the audio jack using sudo raspi-config I believe that it is under advanced options->audio->force 3.5mm I'm not near my pi right now, so I can't check the exact options that you go through to get to it.