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. When enabled in the General 2 page
of the preferences, a dialog is shown to choose if the album or tracks should be
added anyhow. The dialog offers follwoing choices: Only Add Tracks on "Play" or "Play Next" when not in
Playlist Always add Tracks or Album on "Play" or "Play
Next" 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.
When albums or tracks are not in the
playlist yet they are added on pressing play.
Albums or tracks are always added
on pressing play even when the album or track is already in the
playlist.