no sound in FC2

[Preston]

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After installation my audigy card was correctly detected. I was able to hear 
the test sound. But when I tried to listen some music or play video i dont 
get sound using alsa output. I run detection utility and it detects the card 
and configures it, but I cant listen the test sound now.
Any idea about whats happening? 
Is there some way to know what irq my sound hardware is using?

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ru guo ni yao ai, ni jiang bu hui shi qu
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