[pygame] Sound stops working after hours of operation

["PierreLafrance1@xxxxxxxxxxxx" <PierreLafrance1@xxxxxxxxxxxx>]

Hi
Our Pygame application run 24/7 on a Atom/Intel Desktop Board D945GSEJT, with 
Debian Squeeze / Python / Pygame.

Our application use this code to create once in a while, a BEEP sound. Lets say 
its to wake up users :-)

 self.beep_file = pygame.mixer.Sound("%s/beep.wav" % FILE_LOCATION)

This works find for many hours, but stops working within a day.  If we make this 
system command in shell :
aplay %s/beep.wav

sound works and we can hear the sound.

In other words, sound trough Pygame doesn't work, but sounds trough system works 
fine.

We search the web for clues, but look likes we are pretty alone with this kind 
of bug.

Any pointer ?
Thanks

--
Pierre