In CRI Atom, you can specify a selector/label for the player to transition the music being played.
To reflect the set selector/label in the player being played, you need to execute the criAtomExPlayer_UpdateAll function for the player.
After specifying the selector/label, the actual transition timing is determined according to the beat information set in the playing data.
You can find the list of selectors/labels by referring to the ACF header of the project, but please check with the data creator to find out which selector/label is being used in the cue.
The code to set the selector/label for the player is shown below.