Unity Player for Windows

Control your music from lots of places in one handy popup. If you're on a mac, you can also use your Media Keys at the top of your keyboard.

Now you no longer have to worry about whether you're playing music in pandora, or grooveshark, or many others, you can just pause, skip, rewind, thumbs up, or check out the cover art from the one popup in your toolbar. You can quickly focus whichever site is playing by clicking the album art, and if you start playing music from another source, the current one will pause itself as the new one starts.