I tried running the KNOPPIX > Configure > Sound Card Configuration
and got the following message

- a PCI sound card was found on your system model:VIA Technologies VT8233[AC97 Audio Controller]
the application tries to pay a sample sound and on hitting the OK button,

the message pops up as follows

the following error occurred running the modprobe program:
/lib/modules/2.4.20-xfs/kernel/drivers/sound/via82cxxx_audio.0:init_module: No such device
/lib/modules/2.4.20-xfs/kernel/drivers/sound/via82cxxx_audio.0:init_module: insmod
/lib/modules/2.4.20-xfs/kernel/drivers/sound/via82cxxx_audio.0:init_module: failed
/lib/modules/2.4.20-xfs/kernel/drivers/sound/via82cxxx_audio.0:init_module: insmod sound-slot-0 failed