OK, so we all know that the magnets in speakers mess with CRT tube monitors, and that because of this many speakers have been magnetically shielded for the last decade or so. Obviously this is not a problem with LCD monitors, but what about putting spekers right next to the whole computer? Doesn't the hard drive write magnetically? I'm asking because I'm trying to find cheap, used studio monitor speakers for recording audio on my iMac, and a lot of the models in my price range were produced before shielding was standard. The speakers will be inches away from the imac (and one will be very close to my external firewire HDD) and I want to make sure I don't screw anything up. Thanks!