The WFMU Radio to Last.fm extension is a useful tool for WFMU radio listeners who want to keep track of the songs they are listening to. This Chrome extension allows users to send currently playing song information to their Last.fm account, ensuring that their listening history is up to date. Additionally, users can favorite songs on WFMU playlists, and these favorites will be added to their loved tracks on Last.fm.

The extension is compatible with several websites, including WFMU's official website, Radio Rethink, TuneIn, Radio.net, and Online Radio Box. It can also track songs from the WFMU page with the currently playing playlist, including the playlist and comments.

To use the extension, listeners need to create last.fm credentials in their Last.fm account and obtain an API key and secret. The extension provides prompts and necessary information in its pop-up to facilitate this process. It utilizes Last.fm's API methods, love.track and scrobble.track, to ensure accurate tracking and functionality.