A highly configurable slideshow addon that uses a flash component to show the images. Many transitions effects available. All configuration is done directly from the addons page in the admin system.
Flash Slideshow is created by Kim Schulz (flash component by Jeroen Wijering). The addon is licensed under a Creative Commons License which makes it free for you to use an modify for non-commercial usage.
To install you just have to unpack the zip file in your pixelpost root folder.