Rovio Commander is an alternative program to the built in web server interface that comes with the Rovio. It also adds the ability to record audio/video and save as a avi file for later play back. Also you can now use your Rovio as a Security camera with Rovio Commander. Rovio Commander has Motion Detection built-in and will record video when it detects movement. All functions are built right in to Rovio Commander so there is no need to load other external programs to operate the features of Rovio Commander.