aucatctl : utility to control the sndio master and per-program volume ( http://www.sndio.org/ )
rbutil : Rockbox opensource firmware manager for mp3 players ( http://www.rockbox.org/wiki/RockboxUtility )
sndio : small audio and MIDI framework part of the OpenBSD project ( http://www.sndio.org/ )
xanalyser : program to analyse a stereo audio signal ( http://arvin.schnell-web.net/xanalyser/ )
xsndtest : designed for testing and finding the optimum settings for your sound card ( http://www.theory.physics.ubc.ca/soundcard/soundcard.html )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a xmw
For Paludis use this rsync : rsync://gentoo.zugaina.org/xmw-portage
If you have a problem : ycarus(-at-)zugaina.org