What's the name of this Firefox addon?

I recently had to purchase a new hard drive because my last one was irreparable (after getting a blue screen and all that nonsense). Reinstalled Firefox and realized I'm missing my favorite addon. It was music related. Appears in the lower right portion of the browser and you can basically control any music program (iTunes, WMP, even websites like LastFM) from your browser as opposed to having to maximizing it. What I mean by control is being able to pause, press play, skip to the next song, etc. It also displays the song title and artist's name. I've already gone to Firefox's official website. Couldn't locate what I'm looking for. Anyone?