I have these Fender stereo headphones (they are the big ones that go around your ears, not in or on) and no matter what i plug them into, no sound comes out. they were working just fine the other day, but now i have nothing. I have plugged it into both jacks on my computer, my brother's laptop and my ipod and nothing comes out of them. does anyone have any ideas of what i can do, besides getting a new pair?