I've posted a new build for Simple Gallery in the downloads section (members only).

New Functionality Includes:-

• Added play/pause functionality to the lightbox slideshow. You can also customize the slideshow interval in settings -> gallery settings -> slide show settings (default is 5 seconds). See live demo here.

Fixed Bugs Include:-

• Adding duplicate tags on a photo should no longer throw an error (and will only add 1 tag).

Thanks again for all your feedback!