i'm gonna go ahead and lay out what my problem is as briefly as possible my speakers/sound work fine, but when i use the headphone jack only the left external speaker/earbud works (YES my sound is balanced and all that). i've tried all of the tips in this thread http://forums.macrumors.com/showthread.php?t=237405 and absolutely nothing has worked. now when i put the headphones in about 3/4 of the way, both earbuds work. so we know that they both CAN work. oh, and the red light blinks once and only once when i remove the headphones from the jack. there isn't a constant red light flashing at my face. any ideas?