How do I get audio working on Red Hat Enterprise Linux 4 Update 4 on the Precision Workstation 390n?

This system requires an audio driver not provided by Red Hat in Red Hat Enterprise Linux 4 Update 4. Dell provides the support for this driver, and you can find the audio driver from the following url: http://support.dell.com/support/downloads/download.aspx?c=us&cs=555&l=en&s=biz&releaseid=R109066&SystemID=LATITUDE%20PRECISION%20390&os=LIN4&osl=en&deviceid=8907&devlib=0&typecnt=1&vercnt=1&formatcnt=1&libid=3&fileid=141621