To delete a playlist, go on my.meural.com and click on the User icon in the top right hand corner of the screen, it looks like a person in a circle. Next, click on Canvases in the drop down menu. On the next screen click on playlists at the top right hand corner. On the following page you will see all of your playlists. Click on the three horizontal lines in the lower right hand corner and then click on Remove from Canvas to remove the playlist from your Canvas.