Preloader

If you're trying to change the 3D preloader from the theme, the theme has an alternate preloader that you can use. It's a basic circular one and to activate it you just need to paste the following css into the custom css panel from the theme options:

#loader, .post-format-gallery, .format-image .is-other, .format-video .is-other {
  background-image: url(http://yourwebsite.com/wp-content/themes/huge/images/preloader-fff.gif);
   background-position: center center;
}
@media (-webkit-min-device-pixel-ratio: 1.25), (min-resolution: 120dpi){ 
   #loader, .post-format-gallery, .format-image .is-other, .format-video .is-other {
      background-image: url(http://yourwebsite.com/wp-content/themes/huge/images/preloader-fff_x2.gif);
     background-size: 32px 32px;
   }
}

You need to replace http://yourwebsite.com/ with the url of where you have your WordPress installation. The path to the new preloader needs to be an absolute path because the code is not written inside the stylesheet. So make sure that you test the URL before writing it, to make sure that the image you're linking to exists.