Windows Media Player playlist

Hi,
I know that this might sound like a noob question but I have to ask it. How
can I make windows media player automatically organize new added files so
that they are bunched up with previous songs with the same artists. I have a
playlist in my player that has different file types with different locations
in it. I organized all the songs and videos so that the videos are on top and
the rest of the music is alphabetically arranged below the videos. When I add
other media the player just puts them in the bottom of the playlist without
arranging them according to their name. So for example if I have a song from
an artist whose name starts with A and I want to add it to the playlist it
just puts it at the bottom of the list after Z instead of putting it up with
the other A's. iTunes library has that feature that it automatically puts all
the songs from the same artists together and I always wondered why windows
media player didn't do that.