Sorry for the late reply, just couldnt figure out the cause of the errors.
Am grasping at straws here, did you perhaps downloaded the ALSA drivers (or are you using the one installed by Mandrake?) and performed ./snddevices after make install?
Saw this below in the HOWTO for K7S5A (its under Hardware - The Elite's K7s5a mainboard HOWTO).
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Install your kernel sources, in my case:
"rpm -ivh kernel-source-2.4.3-20mdk.i586.rpm"
Then decompress alsa drivers:
"bzip2 -d alsa-driver-0.9.0beta10.tar.bz2 && tar -xvf alsa-driver-0.9.0beta10.tar"
Make them and install them and create the devices files:
"cd alsa-driver-0.9.0beta10 && make install && ./snddevices"
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i tried to swap disk from my sons comp (the system was using crystal sound card drivers and VIA mobo), did an "upgrade" from 9.1 cd1 and the ALSA drivers ran for 7012 (well, it took several times of selecting alsa in mcc then logging in and out, even several reboots before the alsa drivers were firmly in place but it did install). i hope i could help more, but for now, am stumped. maybe someone has a better idea ...