Try running /usr/sbin/drakconf as root.
Choose Hardware and alow it to detect your card.
If the wrong module is loaded (you would already know the correct one from your previous install)
Run the config tool.
Now Edit /etc//modules.conf with your favorite text editor as root.
above your module snd-pcm-oss
alias sound-slot-0 your module
Substitute your module with the real module name.
Log out - Log back in to sound ( Hopefully)