What an absolute steaming pile of crap.
I don't know anything about WTC 7 so I will not address that.
Structural steel,while having a high melting point,will lose its rigidity at a much lower temperature.Try an experiment.Take a piece of steel.Try to bend it.Then apply heat to an area.It will bend more easily well before the melting point.The collapse of WTC 1&2 is explained by this fact combined with some others.When the first floor collapsed,because of weakened steel and support beams that were cut through by the planes,it created a pancake effect.The floors below were not designed to hold that kind of force that was thrust upon it in an instant.
Try another experiment.Take some flour in your hand and clap your other hand suddenly and forcefully on the hand that is holding the flour.This will create the kind of puffs of smoke and debris that your movie says were caused by explosions.Multiply the sound of your hands clapping by about 5000 times and it would sound like explosions.
Also taking sound bites out of context and you can make anyone sound like anything you want.
This proves nothing except you are a conspiracy theorist that doesn' believe in anything except what you want to.You wouldn't know what the truth was if it came up and bit you on the ass.