We know you haven't slept in the week since we first got wind of Sony's MDR-NC300D heaphones and while, sadly, there is (as of yet) still no domestic street date, we do have some more details and a fun little video to tide you over. Billed as the "world's first" digital noise canceling canal earphones (and we're inclined to agree) these guys boast 98.4% noise reduction, an integrated S-Master amplifier, 16mm diameter drivers for each bud, and three separate noise canceling modes. For those of you with a more technical bent, you'll be pleased to know that the 'phones sport a playb