Sounds more like someone dragging a muffler along the ground. Look under there.
Are any of my friends mechanically inclined that can help me diagnose something. This video is the sound my right rear wheel is making. I had the brakes checked and they are nearing the end, but not metal on metal (according to the mechanic). The sound is slightly heard when lightly accelerating from stop and is loud when applying the breaks to a complete stop. https://www.youtube.com/watch?v=29VUzY24SJQ&feature=youtu.be