I believe your problem comes from not having the oss modules installed, you can get these from:
ftp://ftp.alsa-project.org/pub/oss-l...0.9.6.tar.bz2. Compile and install those and then edit your modules.conf file to say:
alias char-major-116 snd
options snd snd_major=116 snd_cards_limit=1
alias snd-card-0
<soundcard>
alias char-major-14 soundcore
alias sound-slot-0 snd-card-0
alias sound-service-0-0 snd-mixer-oss
alias sound-service-0-1 snd-seq-oss
alias sound-service-0-3 snd-pcm-oss
alias sound-service-0-8 snd-seq-oss
alias sound-service-0-12 snd-pcm-oss
post-install
<soundcard> /usr/sbin/alsactl restore
That i believe should work.