This page contains links and information about the OpenContainingFolder plugin for Rhythmbox. The plugin adds an option to open the folder containing the selected track(s) to the right click context menu in Rhythmbox.
You can download the latest version of the plugin here.
To install, run ‘install.sh’ or copy the contents of the archive to ~/.local/share/rhythmbox/plugins/OpenContainingFolder/.
You can grab a copy of the source code from the repository here.