Go to my library and There should be a box with the words "Create/edit Playlist" click that and you can edit your playlist. You'll have to drag the music and drop it into your libarry and then click the arrow button when you want to add that into your new playlist. I dont know what the hell did they make two playlist, "Dynamic playlist" and "playlist". Who ever created this software was a total idiot because the box is so small anyone can miss it and making two playlist just confuses the hell out of a new user using sonic stage.