volatile is a status icon which controls audio volume via ALSA / PulseAudio.
Clicking the icon brings up a volume slider. Context-clicking the icon toggles mute.
Scrolling while hovering the icon (whether the slider is visible or not) also adjusts the volume.
-c/--card: sound card ID to use
-r/--reverse-scroll: scroll volume in reverse ("natural scrolling")
volatile requires pyalsaaudio:
http://pyalsaaudio.sourceforge.net/
This software is released under the terms of the MIT license. See LICENSE.