On 10/29/2009 10:44 AM, David Morrell wrote:
  Hi all, my name is David, I'm new to the
list.
 Sound works in Windows XP and worked in Ubuntu 8.04. It stopped after a
 clean installation of Ubuntu Studio 9.04. It is not known if recording
 worked or if it is now broken. Hopefully sorting out playback will
 lead to a quick solution for recording, if one is needed.
      
 Hi,
 Lots of good debugging info there. I can't spot anything specific that
 you are doing wrong. I suggest contacting the alsa-devel list with this
 one as it looks like you have found a driver bug.
 alsa-devel(a)alsa-project.org
 Cheers.
 Patrick Shirkey
 Boost Hardware Ltd
    
David,
Run alsamixer from a terminal and check the state of the audigy
analog/digital output jack switch.  If it's muted, unmute it, OR if it's
unmuted, mute it!  There was a bug reported in the kernel causing
unexpected behavior of this control.
Frank