shared audio

[adler-wRvlPVLobi1/31tCrMuHxg at public.gmane.org (Stephen Adler)]

Here's another question. How do I setup the audio so that multiple 
applications and play sound at the same time? right now if one 
application fires up and grabs the sound device, then no other 
application and play sound. When I was running fedora 8, that wasn't the 
case. Any clues? Thanks.