Switching alsa sound cards around

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

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.

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