Now that you have created playlists on your iPod you will want to add songs to iPod playlists. Adding or removing songs to iPod, iTouch, iPhone is a kid's game with CopyTrans Manager.
Organize iPod songs into playlists
The simpler the better, don't you think? Select the songs you wish to add to a playlist.
Drag them to the playlist to which you want them to be added.