/usr/share/rhythmbox/plugins/ is in rhythmbox-plugins 3.4.1-2+b1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/rhythmbox/plugins/audioscrobbler/
/usr/share/rhythmbox/plugins/audioscrobbler/audioscrobbler-preferences.ui
/usr/share/rhythmbox/plugins/audioscrobbler/audioscrobbler-profile.ui
/usr/share/rhythmbox/plugins/audioscrobbler/icons/
/usr/share/rhythmbox/plugins/audioscrobbler/icons/hicolor/
/usr/share/rhythmbox/plugins/audioscrobbler/icons/hicolor/scalable/
/usr/share/rhythmbox/plugins/audioscrobbler/icons/hicolor/scalable/places/
/usr/share/rhythmbox/plugins/audioscrobbler/icons/hicolor/scalable/places/Last.fm-symbolic.svg
/usr/share/rhythmbox/plugins/context/
/usr/share/rhythmbox/plugins/context/img/
/usr/share/rhythmbox/plugins/context/img/Allmusic16x16.png
/usr/share/rhythmbox/plugins/context/img/Discogs16x16.png
/usr/share/rhythmbox/plugins/context/img/Wikipedia16x16.png
/usr/share/rhythmbox/plugins/context/img/lastfm.png
/usr/share/rhythmbox/plugins/context/img/spinner.gif
/usr/share/rhythmbox/plugins/context/tmpl/
/usr/share/rhythmbox/plugins/context/tmpl/album-tmpl.html
/usr/share/rhythmbox/plugins/context/tmpl/artist-tmpl.html
/usr/share/rhythmbox/plugins/context/tmpl/links-tmpl.html
/usr/share/rhythmbox/plugins/context/tmpl/loading.html
/usr/share/rhythmbox/plugins/context/tmpl/lyrics-tmpl.html
/usr/share/rhythmbox/plugins/context/tmpl/main.css
/usr/share/rhythmbox/plugins/lyrics/
/usr/share/rhythmbox/plugins/lyrics/lyrics-prefs.ui
/usr/share/rhythmbox/plugins/magnatune/
/usr/share/rhythmbox/plugins/magnatune/icons/
/usr/share/rhythmbox/plugins/magnatune/icons/hicolor/
/usr/share/rhythmbox/plugins/magnatune/icons/hicolor/scalable/
/usr/share/rhythmbox/plugins/magnatune/icons/hicolor/scalable/places/
/usr/share/rhythmbox/plugins/magnatune/icons/hicolor/scalable/places/magnatune-symbolic.svg
/usr/share/rhythmbox/plugins/magnatune/magnatune-loading.ui
/usr/share/rhythmbox/plugins/magnatune/magnatune-popup.ui
/usr/share/rhythmbox/plugins/magnatune/magnatune-prefs.ui
/usr/share/rhythmbox/plugins/magnatune/magnatune-toolbar.ui
/usr/share/rhythmbox/plugins/magnatune/magnatune_logo_color_small.png
/usr/share/rhythmbox/plugins/magnatune/magnatune_logo_color_tiny.png
/usr/share/rhythmbox/plugins/rblirc/
/usr/share/rhythmbox/plugins/rblirc/rhythmbox_lirc_default
/usr/share/rhythmbox/plugins/replaygain/
/usr/share/rhythmbox/plugins/replaygain/replaygain-prefs.ui
/usr/share/rhythmbox/plugins/soundcloud/
/usr/share/rhythmbox/plugins/soundcloud/icons/
/usr/share/rhythmbox/plugins/soundcloud/icons/hicolor/
/usr/share/rhythmbox/plugins/soundcloud/icons/hicolor/scalable/
/usr/share/rhythmbox/plugins/soundcloud/icons/hicolor/scalable/places/
/usr/share/rhythmbox/plugins/soundcloud/icons/hicolor/scalable/places/soundcloud-symbolic.svg
/usr/share/rhythmbox/plugins/soundcloud/powered-by-soundcloud.png
/usr/share/rhythmbox/plugins/soundcloud/soundcloud.ui
/usr/share/rhythmbox/plugins/webremote/
/usr/share/rhythmbox/plugins/webremote/css/
/usr/share/rhythmbox/plugins/webremote/css/grids-responsive-min.css
/usr/share/rhythmbox/plugins/webremote/css/pure-min.css
/usr/share/rhythmbox/plugins/webremote/css/webremote.css
/usr/share/rhythmbox/plugins/webremote/js/
/usr/share/rhythmbox/plugins/webremote/js/webremote.js
/usr/share/rhythmbox/plugins/webremote/webremote-config.ui
/usr/share/rhythmbox/plugins/webremote/webremote.html