plasma-applet-active-window-control : Plasma 5 applet for controlling currently active window. ( https://store.kde.org/p/998910/ )
playbar2 : Client MPRIS2, allows you to control your favorite media player ( https://store.kde.org/content/show.php/PlayBar2?content=168944 )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a abendbrot
For Paludis use this rsync : rsync://gentoo.zugaina.org/abendbrot-portage
If you have a problem : ycarus(-at-)zugaina.org