These ebuilds come from http://proaudio.tuxfamily.org/wiki.
If you have some problems, go to the official site first.
fvwm-xdg-menu : xdg menu for use with fvwm and fvwm-menu-desktop ( https://github.com/domichel/fvwm-xdg-menu )
xanalyser : Program to analyse a stereo audio signal. ( http://arvin.schnell-web.net/xanalyser/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a pro-audio
For Paludis use this rsync : rsync://gentoo.zugaina.org/pro-audio-portage
If you have a problem : ycarus(-at-)zugaina.org