Playlists
To make a new playlist, click the "new playlist button" (the plus sign in the lower left), or go to the File menu and pick "New Playlist"
Make sure you sort your playlists by index.
To add songs to a playlist, drag and drop, or you can use Target Mode.
You can show or hide any sort columns you want.
To play your playlist, select it in the Sources list (on the left), then press play (to continue) or double click the song you want to start on.