LinuxQuestions.org - How to configure Old Azt2320 soundcard ?

You must download the "alsa-driver" package which contains the source for all of the supported soundcards, alsa-lib which is for the needs of alsa itself, "alsa-oss" which is for compatibility with oss sound system, and "alsa-utils" which is for alsamixer and some other useful programs for alsa. To download them go to the download section of alsa-project.org.
After downloading the files, uncompress them where you want. First go into the directory where you have uncompressed the drivers package and type
"./configure --with-cards=azt2320 --with-sequencer=yes"
Then wait for the configure script to do its work and type "make". This will compile the modules. If this don't return errors type "make install". Then go into the directory containing the uncompressed libs package. Type "./configure", then "make", then "make install" (You can type all of the commands in one raw if you prefer). Redo the same for the other two packages. This will install the compiled modules in the appropriate place. If everything is successful you should run alsaconf. It will detect your card and will do the required configuration. If it fails to detect the card type "modprobe snd-azt2320" and rerun alsaconf. If everything is ok run alsamixer to unmute your card and press the play button of xmms or whatever you want to listen to.

I hope this gives you a basic description, but if you don't understand something post some more info about what gets wrong. Since I'm not too familiar with Red Hat here are some links for you if you want more info:

Aztech 2320 info from alsa

Redhat and alsa how-to from linuxquestions forums

If for some reason the compilation fails you can also try compiled packages.