Most of the time I study with my iPod, but sometimes I just need peace and quite. I turn my iPod off, but then there are so many other distracting noises. I would love to see a noise cancelling application that uses the mic on the apple headset earbids to pick up noise and produces the counter sound in the earbuds. I searched around for this, but wasn't able to find anything. Have any of you heard of this, or want an idea for a new application?