I just made a huge update to my site, although you probably can't see it.
I switched from simpleviewer to flickrviewer (
http://www.sweeting.org/mark/flickrviewer/)
This now allows me to simply change and rotate the pictures that appear in my web galleries through my flickr page, whereas I was previously updating both.
Highly recommend this, however if you use multiple galleries you might have to turn off caching on the php.