Can't help with the mouse, but what is the exact problem with the sound card? It looks as though Slackware is detecting it okay but you just can't play any sounds. Have you tried running 'alsaconf' and 'alsamixer'? You may also need to change permissions on it. The easiest (although insecure) way to do this is
Code:
chmod 666 /dev/dsp*
chmod 666 /dev/mixer*