Open up /etc/modules.conf and add the following three lines:
Code:
alias /dev/dsp opl3sa2
alias /dev/mixer opl3sa2
alias /dev/sequencer opl3sa2
then save it and open up /etc/rc.d/rc.modules and look for a modprobe line for the opl3sa2 driver and then uncomment it. This'll make the driver start automatically at boot time but if you want to use it right away, just modprobe the driver yourself from the command line (as root):