alsa-project
- arch wiki - Advanced Linux Sound Architecture
- no need to install, built-in to kernel
- install userspace utilities:
pacman -S alsa-utils
- for better resampling:
pacman -S alsa-plugins
- unmute channels:
alsamixer
- speaker test:
speaker-test -c2
- hard to use, can't get working
- just install userspace component, you'll have to anyways!