E.g. simply clearing the queue (c -- although this didn't cause a crash
because the clear function immediately selects the main queue) or
unqueueing all items (incoming commit).
E.g. queue whatever album you want to play, press escape to stop playing
the current track, press 2 to focus the queue, S to shuffle, then play
the first track. (If you don't stop the current track first, that track
won't be shuffled with the rest.)