Hyperacusis. That's the term I found for the sound sensitivity. There are other terms, but this one seems to fit. Once I really realized how bad this was for me, my husband and I made lifestyle changes that have increased my tolerance quite a bit. Our house is quiet. No music ever plays out loud. We watch tv and movies, but we watch them fairly quietly and use subtitles to follow along. We mute ads all the time. There just isnt unnecessary noise in our house or car. The stereo is always in the off position in the car. I keep ear plugs in every purse and backpack and desk and beside the bed. I bring earplugs on flights and sometimes in malls or even at work if I'm extra sensitive.
Now that I'm not inundated with noise all the time I have built a small tolerance for some everyday noises and it doesn't restrict me as much.
I used to have a lot of trouble with movement too. It just made my brain feel overwhelmed and crazy. It actually made me nauseous. When I was in university I use to take public transit, but there was so much noise and movement, I just had to find a way to pay the cost of driving my own car. It cut down on noise and movement. I rarely ride in someone else's car. Being trapped in a small space with noise and such is a horrible experience for me.
Now that I know my limitations and I make sure my needs are met at home, i have enough tolerance that I can even go to loud restaurants from time to time.
I hope you can find some things that help you deal with the sound and movement issue. I remember how tough it was all the time. It can get better.