The Handbook
is an application to allow you to change the volume of your sound card.

Introduction
is 's soundcard mixer program. Though small, it is full-featured. The program should give controls for each of your soundcards.
supports several platforms and sound drivers. Version 1.9 works with:
All Open Sound System platforms. Explicitly tested are , FreeBSD, NetBSD and BSDI.
based machines.
based machines.
The ALSA soundcard driver.
based machines.