flac : Free lossless audio encoder and decoder ( https://xiph.org/flac/ )
libvorbis : Ogg Vorbis sound file format library ( https://xiph.org/vorbis/ )
openal : Software implementation of the OpenAL 3D audio API ( http://kcat.strangesoft.net/openal.html ${GH_HOMEPAGE} )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a rindeal
For Paludis use this rsync : rsync://gentoo.zugaina.org/rindeal-portage
If you have a problem : ycarus(-at-)zugaina.org