Short reference on switching around alsa sound cards, making another one the default.
Needed to do this since my computer has 3 sound cards (M-Audio, SoundBlaster and the G35 headset)
List alsa modules:
cat /proc/asound/modules 0 snd_ice1724 1 snd_ctxfi 2 snd_usb_audio
Edit /etc/modprobe.d/alsa-base.conf, adding the following lines (note the underscores from above are now dashes):
options snd-ctxfi index=-2 options snd-usb-audio index=-2 options snd-ice1724 index=-1
Done.
If you’re reading this, and you’re not me, customize the above to match your settings, and the priorities you want for your modules.