In the quick access drop-down box, click the playlist you want to play.
-or-
Click Media Library, expand My Playlists, click a playlist, and then click Play.
Notes
To play a playlist repeatedly, on the Play menu, click Repeat. A check mark appears next to the command to indicate that it is turned on.
You can also select playlists to play from My Computer by clicking My Music, clicking My Playlists, right-clicking the playlist, and then clicking Play.
You can temporarily add any item to a playlist by right-clicking the item, and then clicking Queue-it-up. The item remains in the playlist until you play something else or close the Player.
In Media Library, when a playlist is selected, a playlist menu icon is displayed at the bottom of the screen in the Media Information pane. You can click the icon to display a playlist menu which contains the following commands, EditPlaylist, DeleteSelected, Clear, Sort, Open, SaveAs, and CopytoCDorDevice. The playlist menu icon is also available in Now Playing.