/usr/share/kde4/apps/plasma/plasmoids/nowplaying/contents/ is in plasma-widgets-addons 4:4.14.2-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/kde4/apps/plasma/plasmoids/nowplaying/contents/code/
/usr/share/kde4/apps/plasma/plasmoids/nowplaying/contents/code/service.js
/usr/share/kde4/apps/plasma/plasmoids/nowplaying/contents/config/
/usr/share/kde4/apps/plasma/plasmoids/nowplaying/contents/config/main.xml
/usr/share/kde4/apps/plasma/plasmoids/nowplaying/contents/theme/
/usr/share/kde4/apps/plasma/plasmoids/nowplaying/contents/theme/nowplaying/
/usr/share/kde4/apps/plasma/plasmoids/nowplaying/contents/theme/nowplaying/nocover.svgz
/usr/share/kde4/apps/plasma/plasmoids/nowplaying/contents/ui/
/usr/share/kde4/apps/plasma/plasmoids/nowplaying/contents/ui/AlbumArt.qml
/usr/share/kde4/apps/plasma/plasmoids/nowplaying/contents/ui/CompactLayout.qml
/usr/share/kde4/apps/plasma/plasmoids/nowplaying/contents/ui/Controls.qml
/usr/share/kde4/apps/plasma/plasmoids/nowplaying/contents/ui/FullLayout.qml
/usr/share/kde4/apps/plasma/plasmoids/nowplaying/contents/ui/Label.qml
/usr/share/kde4/apps/plasma/plasmoids/nowplaying/contents/ui/MetadataLine.qml
/usr/share/kde4/apps/plasma/plasmoids/nowplaying/contents/ui/MetadataPanel.qml
/usr/share/kde4/apps/plasma/plasmoids/nowplaying/contents/ui/Mpris2.qml
/usr/share/kde4/apps/plasma/plasmoids/nowplaying/contents/ui/PlayPauseButton.qml
/usr/share/kde4/apps/plasma/plasmoids/nowplaying/contents/ui/PositionSlider.qml
/usr/share/kde4/apps/plasma/plasmoids/nowplaying/contents/ui/VLayout.qml
/usr/share/kde4/apps/plasma/plasmoids/nowplaying/contents/ui/config.ui
/usr/share/kde4/apps/plasma/plasmoids/nowplaying/contents/ui/nowplaying.qml