These ebuilds come from https://github.com/tokiclover/bar-overlay.
If you have some problems, go to the official site first.
a2jmidid : Daemon for exposing legacy ALSA sequencer applications in JACK MIDI system ( http://home.gna.org/a2jmidid/ )
deadbeef : DeaDBeeF - Ultimate Music Player For GNU/Linux ( http://deadbeef.sourceforge.net/ )
empc : MPD multiplexer/client build on Enlightenment Foundation Libraries ( https://enlightenment.org )
fluidsynth : Fluidsynth is a software real-time synthesizer based on the Soundfont 2 specifications. ( http://www.fluidsynth.org/ )
hydrogen : Advanced drum machine ( http://www.hydrogen-music.org )
jack-audio-connection-kit : Jackdmp jack implemention for multi-processor machine ( http://jackaudio.org/ )
jack_mixer : JACK audio mixer using GTK2 interface. ( http://home.gna.org/jackmixer/ )
jalv : Simple and fully featured LV2 host for Jack running and exposing LV2 plugins as JACK applications ( http://drobilla.net/software/jalv )
ladish : LADI Session Handler - a session management system for JACK applications ( http://ladish.org/ )
laditools : Control and monitor a LADI system the easy way ( https://launchpad.net/laditools )
oss : OSSv4 portable, mixing-capable, high quality sound system for Unix ( http://developer.opensound.com/ )
patchage : Modular patch bay for audio and MIDI systems ( http://wiki.drobilla.net/Patchage )
rezound : Sound editor and recorder ( http://rezound.sourceforge.net )
rosegarden : MIDI and audio sequencer and notation editor ( http://www.rosegardenmusic.com/ )
seq24 : Seq24 is a loop based MIDI sequencer with focus on live performances. ( https://edge.launchpad.net/seq24/ )
yoshimi : A software synthesizer for Linux, based on ZynAddSubFX ( http://yoshimi.sourceforge.net )
zita-ajbridge : Bridge ALSA devices to Jack clients, to provide additional capture (a2j) or playback (j2a) channels ( http://kokkinizita.linuxaudio.org/linuxaudio/ )
zynaddsubfx : ZynAddSubFX is an opensource software synthesizer. ( http://zynaddsubfx.sourceforge.net/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a bar-overlay
For Paludis use this rsync : rsync://gentoo.zugaina.org/bar-overlay-portage
If you have a problem : ycarus(-at-)zugaina.org