Looks like the old Music Preview, Video Preview, and old Store - these apps have been retired in favor of the new ones.
I think the path to the apps is still listed in the index of apps hence why they appear but since they are not installed anymore, you just need to right click and uninstall to get rid of them (I can't do that for the old store for some reason but I think that's how I removed the links to the old music and video preview)