Firstly, it is a great implementation of Photospace in the most part so thanks a lot to the developer for covering this.
One thing that could really do with fixing though is the way that 'playLinkText' and the others are used to hold the '<span>' tags. The Gallerific code uses this to populate the 'title' as well so it's producing an ugly title with the span elements visible to the user.
Otherwise, other than some conflicts I'm getting with other jQuery plugins (though you're enqueueing the jQuery load so it's probably their failing) it's great stuff! (...well, actually I'm also getting some stutter with a lot of transitions, but I think that's webkit's fault :) )