Rhythmbox-spotify is a project mainly written in SHELL and C, based on the View license.
Out-of-tree spotify plugin for Rhythmbox, based on https://github.com/ivankelly/Rhythmbox-Spotify-Plugin
This plugin provides Spotify integration for Rhythmbox
It is based (99%) on https://github.com/ivankelly/Rhythmbox-Spotify-Plugin/ by Ivan Kelly. This is merely a port of it to the out-of-tree plugin building added recently to Rhythmbox and a port to the newer APIs.
It currently provides Search and playing, with playlist importation to come soon.