You can display a slideshow of images from a Flickr account using the Flickr Slideshow Element.
To learn more about Flickr and create an account with them, visit http://www.flickr.com/.
To insert the Flickr Slideshow, choose Flickr Slideshow from the Image Elements in your Element list.
As soon as you insert the element you will see this error message. Ignore it and click the gear.
Select New Data.
Enter the Photo Set ID from your Flickr account and save.