Hi everyone

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I'm hoping to get some advice/help. We are doing our whole house in Pergo Signature, Casual Living Laminate, attached underlayment. God bless him, but my husband is doing the installation, he's taken a few of the "in store" classes at a local home improvement store AND bought the video to watch, which we've watched about 5 times. Anyways, we've done my two girls room, master bedroom and the hallway, next will be the rest of the house, living/dinning/kitchen and laundry rooms.
We have to pull up part of the hallway due to its not level, which is a bit of problem in the other rooms, but not as bad, we did the level thing with the string and then put in that cement stuff, forget what its called. We have cement subfloor and put that moisture barrier "Plastic", its 6 mil Contractors Choice, Extra Heavy Duty, Clear Plastic Sheeting (which was suggested by the "laminate installers" at that home improvement store.
The problem: When I'm walking in the bedrooms I can actually hear the "plastic" underneath. I'm scared, I don't want my living/dinning and kitchen to sound like this, its obvious there is plastic underneath. Hubby says he can't hear it, I think its because he's affraid he's done something wrong and will have to pull it all up..
What are we doing wrong? Does anyone else hear that plastic? It's really driving me nuts and I can't and don't want that sound in the rest of my house.. please help? Is this normal?
PLEASE HELP? LOL I'm desperate as we will be doing the rest of the house in about 1 - 2 weeks..
Thanks so much, Pamela