Like.fm for Firefoxis a Firefox add-in that enable you to keep track of what you listen to, share music with your friends, and see what new music they recently like.
Like.fm summarizes your music automatically and lets you embed it into your Facebook profile. Your Facebook friends will be able to check up instantly to see what you are listening to. If you use Twitter you can also automatically tweet new discoveries based on what you rate the song. Last.fm users can scrobble everything tracked by Like.fm.
Additionally follow friends or random people whose music you like and see what recent outstanding songs they discover, as they discover it.

How good is the YouTube support?
YouTube support is extremely accurate. It doesn't matter if the title's "Animal - Neon Trees," "Neon Trees - Animal," or "Neon Trees Animal (HIGH QUALITY)." We'll detect it. And don't worry, the extension checks to make sure the video is in the music category before reporting it. If the title doesn't make sense, we also check to see if YouTube tagged the video as a song and use that if available. Rest assured Like.fm for Chrome has the most advanced YouTube scrobbling support available.

Requirements:
* Firefox

The license of this software is Free, you can free download and free use this browser plug-ins software.