the jack to my headphones ripped off inside my macbook and im unable to get it out. i brought it to the store and they said they would have to replace the entire unit for $700, so im not doing that. the jack is still inside and the macbook thinks that i have headphones plugged in so i cant get music to play out of the speakers. if i was to buy usb headphones and plug it in, would the usb headphones like overrule the headphone jack haha?