libmagic : Lbrary for automatically determining the type of a file by performing a series of tests on it. ( http://libmagic.sourceforge.net/ )
pam : Linux-PAM (Pluggable Authentication Modules) ( http://www.kernel.org/pub/linux/libs/pam/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a proaudio
For Paludis use this rsync : rsync://gentoo.zugaina.org/proaudio-portage
If you have a problem : ycarus(-at-)zugaina.org