Watch YouTube While You Browse The Web.Sideplayer adds a floating YouTube video into your browser so you can watch YouTube while you browse the web. After installing Sideplayer Every YouTube video will have a Sideplayer button left to the full screen button. Click it to get started. No Ads Easily resizable. Change video speed. Choose video quality. Change player opacity. Drag where you want it. Autoplay included - Sit back and relax. Sideplayer even works when changing tabs.