How the heck did they make this??

So Ive been asked to see if I can add video and some new photos to a gallery in a flash website. The site is at http://www.thelaunchgroup.com

I have access to the flash file, but I honestly cant figure out how the hell it was built. I dont know if things have changed but when I learned flash like forever ago you built flash websites using different scenes, but I cant find where the gallery even is here.

Can anyone tell me how the heck this was built so I at least have a jumping off point cause right now Im left scratching my head.

This is a typical flash gallery driven usually by an external XML file. Most probably you must edit that file to add whatever you need.

Thanks, that will be a huge help :)