[CentOS] How prevent loading of audio driver at boot?

Mon Dec 10 12:14:36 UTC 2007
Steve Snyder <swsnyder at insightbb.com>

CentOS v5.1 insists on loading about a dozen audio-related drivers at boot 
time.  Since this is a server machine, it will never run applications 
that require sound output.

I tried setting "alias snd_cs46xx off" in modprobe.conf.  Yet the system 
still loads that driver and the many, many other audio drivers that go 
with it.

How can I disable the loading of audio drivers at boot time?

Thanks.