A new feature as of version 2.9.3f is the ability to select multiple background files simply by holding the shift key down when selecting a background image. The next image in sequence is displayed when the tracking object reaches the right hand side of the screen.

The animation above and to the right illustrates the effect when applied to smoking related images. An image of cigarettes is rapidly followed by a sequence of aversive / thought provoking images.

As of version 3.3 you can also edit the list of slideshow files ie change the order, delete or copy.

Beep audio, background audio, multimedia (CD/Video), tracking images, background images can all be very easily previewed before use.