So I have a new Macbook Pro which is absolutely beautiful (the backlit LED display is stunning). And while everything is working great, there is one thin I have noticed. When using my Shure E3C headphones, I notice a series of slight beeps whenever I use increase or decrease or increase the volume; it also happens for the first few seconds after I turn on any sound source (itunes, a youtube clip, etc..). I am not quite sure what to make of it; it almost sounds like interference from another signal, or perhaps even a noise the space ship would make from close encounters of the 3rd kind. Could this be some kind of problem with my soundcard? Is the NSA hacking my macbook pro? Are little green men in my Shures? Any help would be appreciated, thanks.