If you use YouTube to listen to music while you are browsing the web you might finding pausing a video or adjusting volume a little difficult if you have many tabs open. Video Controller is an extension for Chrome that places a simple control panel on your toolbar to quickly pause or adjust volume regardless of which tab the video is in. If you're using playlists, you can also quickly skip or replay songs without having to switch back to the original tab. If no videos are open, Video Controller automatically links you to YouTube, so you don’t have to seperately open it.
Just open Chrome and install Video Controller.