load sound module (2.6)

[gm c]

I would like to load sound module (snd-powermac or dmasound_pmac)
when I atempt to play a sound file rather than on bootup. My google
search has given me information that I have tried with no success. Is
there anyone that is able to load sound module on demand that can
tell me there configuration (setup)?
Thank you
mike

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