Starting a new video on an art tile does not stop the audio from the previous one

So if I have multiple videos with audio and I start one on an art tile, if I start another one with audio overwriting the current one, the one I overwrote still plays its audio. The same thing happens when I clear the image, and the audio continues to play. This results in a very messy soundscape if I want to show one video after another. Refreshing fixes the problem