How do I make different playlists on Windows Media Player?

You can select songs and save them as playlists.

for eg select Songs from Now Playing list and then you can add them to playlist of your wish.

and there is 1 more way to do when you right click any mp3 or media file there is option which reads as "Add to Playlist" which will let you add that file to the playlist of you wish.

Have a Nice Day.

DJ

In your library, you can add songs to the "Now Playing" list, and then select the arrow/tab with the "Now Playing" text displayed on it. There should be a menu option to "Save Playlist as..." and that's where you would save it. Then there's the "Open Playlist" and "New Playlist", which allow you to create a new one. Your playlists are always editable, and you just need to pull up the playlist, (which is also accessable in the "Quick Acess" menu next to the "NOW PLAYING" tab) and you can add the songs that you want now, and Save it again. I hope this helped. Enjoy!

You select the file item at the top and click new playlist and then name it and then items you move from your library will become added to that playlist.

you just chose all the file that you want to play on it and then click enter. after that if you want to add any thing else you just right click on it and chose ( add to now playing list )