When you select a track or album you can choose to play it immediatly.
This means the current track immediatly stops playing and new track starts to
play. Basically there are two kind of places where this can be done: When choosing play from the playlist, the
selected track starts to play. When choosing play from outside the playlist, the album or
track should be added when not in playlist yet. But even when the album or track is
already in the playlist, the user might want to add the album anyhow. It is also
possible to make the current now playing playlist to be cleared. All this behavior can be
modified in thes Playlist and
Player
page of the preferences. Note: To determine if an album is already in the
playlist, it is checked if the album is available in full with tracks in
sequential order. Otherwise an album is considered not to be in the playlist
yet.