sndio.el is a major mode to interact with sndio(8).
Activate it with M-x sndio RET, then the following bindings will be available:
d | sndio-decrease |
g | sndio-update |
i | sndio-increase |
m | sndio-mute |
t | sndio-toggle |
n | forward-line |
p | previous-line |
or call M-x sndio-win-open RET to open a popup window to quickly
change the volume and then q to quit.