|string||The ID of the speaking character to match this sound to|
|sound||The sound resource to play as voiceover|
|real (0-1)||The sound volume, where 1 is default and 0 is silent|
|real||The length of time to fade sound in, in seconds|
|integer/macro||Optional: Sets the ease mode to perform the fade in|
|real/string||Optional: Sets the language flag for this action|
Plays a new sound as voiceover with an optional fade in and volume control. Voiceover is never looped and will be paused if
vngen_toggle_pause is run. Voice audio will be added to the backlog for the current event and will trigger facial animations for the associated character, if any.