tip of the headphones jack stuck inside with superglue

Hi i'm in Peru. I have a macbook pro uni-body. The tip of the headphones got stuck inside in my desperation i took it to a pc service and they tried to take the tip pasting it with another piece with super glue, now is dead. There is no sound from the speakers and no option to switch it in the output from headphones to speakers.

1st i wanna know if its possible to change the piece of the headphones in without changing the main board.

2nd i know that switching the output from headphones to speakers is a software thing cause when i start the computer the booonnggg sound came out from the speakers so there must be an option to change from headphones to speakers via software.

thnx for your help

My email rufiansk8@gmail.com