Umix is a program for adjusting soundcard volumes and other
features in soundcard mixers. You can control your volumes, balances
and recording sources flexibly from the command line, with a ncurses
user interface with familiar vi/emacs keybindings or with a GTK+2
graphical UI. Umix supports multiple mixer devices and all mixer
drivers and UI's are dynamically loaded at runtime as plugins. All
settings can be saved and loaded from a file.
From cez at compsoc dot man dot ac dot uk in NetBSD PR#19062.