Currently, I only have 3 programs running, and my i just got my macbook yesterday. Yesterday it had the same issue, but it stopped making the noise when i quit a couple programs. It sounds like the fan inside the laptop to keep the machine cooled, but i'm not particularly sure, seeing how i am a first time mac user. Is it a problem that i can hear it through earphones without music on? Its not terribly loud, but it is noticeble. I was wondering if there is any way i can change a certain setting so it won't be so loud. Is this normal? Help?