MarsSeed [1] filed a deletion request for kdeplasma-applets-playbar [2]: Unneeded addon script to KDE4 from 2015: there's no KDE4 environment available for installation in Arch/AUR repos.
Upstream not developed since 2014, GitHub repo archived. [a] [a]: https://github.com/jsmitar/PlayBar [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/kdeplasma-applets-playbar/
