Hello MacRumors! I have a 15 inch MBP that is experiencing a problem with its headphone jack. Some portion of it inside the plug is jammed to make it falsely believe that I always have something plugged into it, disabling the computer's built-in speakers. Is there some way where I can force with software the MBP to output sound to the speakers on either side of the keyboard, rather than having sound wired towards the headphone/optical out jack? I am certain it is the headphone jack's fault because red light comes out from the jack as if I'm using it for optical out, and I was previously able to intermittently get it to use speakers by poking and prodding in the port with a toothpick to reset the spring mechanism thingamabob, as suggested elsewhere. Miscellaneous related info: I can divert sound to a bluetooth speaker just fine. I can use the headphone jack to listen to audio just fine. I can use the thunderbolt to DisplayPort/HDMI audio features just fine.