We'll create fresh WordPress site with ntp-header-images installed. You have 20 minutes to test the plugin after that site we'll be deleted.
This plugin allows you to show random images with links to your posts in any place of your website. You can adjust count and size of images, add/delete images using admin page.
Also you can import all images from posts with preview automaticaly (no duplicate if you already have some image+post pairs added).
You can see the example in the header of http://lifelongjourney.ru