You will get something like:
2) To set the default sound card edit '/lib/modprobe.d/sound.conf' (create if not there).
options snd_yamaha index=0
options snd_hda_intel index=1
options snd_sis index=2
That sets the yamaha card as the default (index=0). You'll probably have to run:
for changes to take effect, or you can reboot if that doesn't work.
3) Use 'alsamixer' to set the volumes, and 'alsactl store' to store them.