Mine

ERROR: Module snd_ac97_codec is in use by snd_intel8x0m
[root@localhost ~]# cat /etc/modprobe.conf
alias eth0 via-rhine
alias eth1 ipw2200
alias snd-card-0 snd-usb-audio
options snd-card-0 index=0
options snd-intel8x0 index=0
remove snd-intel8x0 { /usr/sbin/alsactl store 0 >/dev/null 2>&1 || : ; }; /sbin/modprobe -r --ignore-remove snd-intel8x0

alias snd-card-1 snd-intel8x0
options snd-card-1 index=1
options snd-usb-audio index=1
remove snd-usb-audio { /usr/sbin/alsactl store 1 >/dev/null 2>&1 || : ; }; /sbin/modprobe -r --ignore-remove snd-usb-audio
alias usb-controller ehci-hcd
alias usb-controller1 uhci-hcd
options ipw2200
alias eth2 ray_cs