Complex sentence: When a programmer uses the Croquet libraries (OpenGL) to render an object individually, the system will also automatically render it in relationship to all the other objects; and combine the sound of all the objects with respect to their relative positions to the user.
Split into simpler sentences: When a programmer uses the Croquet libraries to render an object individually, the system will also take care of rendering it in relationship to all the other objects. The system will also take care of combining the sound of all the objects with respect to their relative positions to the user.