Sort by title in front end

Great plugin guys, just one thing I cant seem to get to work.

For some reason the order by settings in the back end dont actually seem to change the way in which the image thumbnails are ordered…

But I was more interested in trying to add a drop down feature on the front end so that users could select the way in which images are ordered title/date added wise.

I have tried various scripts but just cant seem to get it working