It's located under the "Uploading Files" heading. For example, you might list an image folder with "media/images." Click on the "Save Changes" button to save the new location.

A single electronic file that contains the identical content of an optical disc, including the folder and file hierarchy. Using an .ISO file extension, ISO images are created to distribute the ...

You can now start adding images to the screensaver folder. Every file you drop into this folder will become part of the set randomly displayed on your standby screen.