Help with sound

[emerson tan]

Hi! Please help me! I've updated from KDE 2.2.2 to KDe 3.0! It's great! However, I lost 
all sound! Autodetect fails. And it also seems that files from /dev are missing!  
 
What should I do to restore sound? 
 
Thanks in advance! 
 
--emer 
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