As described in the Overview, the queue is used to queue up songs to be played. In recent versions of Quod Libet, some new features have been introduced to the queue, which is described below.
With release 4.3.0, the Ignore and Keep Songs checkboxes were replaced with a queue disable button and a mode selection menu.
The queue can be disabled by clicking the padlock in the queue header. When disabled, the queue will not be played from - but you can still add songs to it.
Queue Mode Selection
The queue also has two different modes that can be selected in its preferences.
In the Ephemeral mode (default), the queue consumes songs as described in the Overview.
The other mode is the Persistent mode. In this mode, songs will be kept in the queue even after being played. Furthermore, the queue won’t have precedence over the song list unless it is explicitly being played from by first double-clicking on a song in it. This allows switching between the queue and the song list without having to clear or disable the queue.