Disable Headphone Jack on PowerBook G4
We have a PowerBook G4 which fell off a table with speakers plugged into the headphone jack. When it landed, the headphone jack broke off inside the computer. I've tried to get the jack out but it's simply too far in and I can't seem to pry it loose or get anything to stick to it enough to pull it out (I've tried superglue on a Q-Tip with no success).
Is there any way to simply disable the headphone jack so that sound goes through the internal speakers again?
I've searched through the Sound menu in System Preferences but haven't found any way to select anything other than "Headphones". Any help would be greatly appreciated.
If there isn't a way to disable the headphone jack, does anyone know if USB speakers will still work with headphones plugged in?
PowerBook, Mac OS X (10.5.8)