The After effects project uses the 8 jpg images 800 * 503 pixels located in the image holder folder named image 1-8 respectively
All you need do is replace each of these with an image the same size and same file name
once you have completed this restart the AF project.
Each text description for the image is within the respective image effect composition change as required, all audio is included with effects so this can be exported with the output video when rendering the timeline.
The Hd 1280 720 composition will provide the output motion background for encore with the DVD menu supplied.