ganv : An interactive Gtk widget for boxes and lines or graph-like environments ( http://drobilla.net/software/ganv/ )
libffado : Driver for IEEE1394 (Firewire) audio interfaces ( http://www.ffado.org )
lilv : Library to make the use of LV2 plugins as simple as possible for applications ( http://drobilla.net/software/lilv/ )
lv2 : LV2 is a simple but extensible successor of LADSPA ( http://lv2plug.in/ )
mesa : OpenGL-like graphic library for Linux ( http://mesa3d.sourceforge.net/ )
sratom : Library for serialising LV2 atoms to/from RDF, particularly the Turtle syntax ( http://drobilla.net/software/sratom/ )
suil : Lightweight C library for loading and wrapping LV2 plugin UIs ( http://drobilla.net/software/suil/ )
zita-alsa-pcmi : Successor of clalsadrv, API providing easy access to ALSA PCM devices ( http://kokkinizita.linuxaudio.org/linuxaudio/ )
zita-resampler : C++ library for real-time resampling of audio signals ( http://kokkinizita.linuxaudio.org/linuxaudio/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a bar
For Paludis use this rsync : rsync://gentoo.zugaina.org/bar-portage
If you have a problem : ycarus(-at-)zugaina.org