Tick the Continuous button to the right of the playlist. To see more about using playlists, see the last part of the following page: http://www.gnutellaforums.com/showth...threadid=36230 Also, for the playlist you use the play button. But if you're wanting to play a song outside of the playlist then use the launch button.

By the way, if you move the songs after creating the playlist, then the playlist won't work. Keep that in mind.