Add empty space at bottom of playlist to make it easier to add a new item

Problem: if your playlist is long enough to fill up the entire playlist window, then it becomes harder and more annoying to add new items to the playlist because you must drag-and-drop the new item very precisely below the last item. The difficulty is compounded if the user has not already scrolled to the bottom of the playlist. \ \ Suggested solution: put some empty space at the bottom of the playlist that cannot be filled. Thus, whenever the playlist is very long, the user can simply and easily drag-and-drop a new item into the empty space - no precision mousing required. Also, this eliminates the requirement that the user must scroll down to the bottom of the playlist. \ \ I hope that this enhancement will make it easier for the user to keep adding items to the playlist whenever the playlist is getting very long.