Flash 5 for Linux -> no sound with Mozilla

[Arcady Genkin]

I've upgraded my flash plugin to version 5.  It works perfectly,
except that the sound is gone.  I see no error messages in the
mozilla's output.
Using Mozilla .7 under Linux, alsa audio drivers for SB Live.

Any ideas?
-- 
Arcady Genkin
Nostalgia isn't what it used to be.