Ok, so I picked up the mytouch 4G a week ago, and yesterday was the first time that I tried to use the headphones. The problem is that the controls (play, skip, previous) don't work once the screen goes off. For example, I'm on the train and I locked the phone and put it in my pocket, I then tried to skip to the next song, but none of the controls work....UNLESS the phone screen is on. Which defeats the purpose of having stereo headphone controls. Any help...?