I have posted this on apple community but it wasn't getting me anywhere so I am going to ask here. How is you're over all mac book air audio quality? I currently have the new macbook air 13" and the sound is very good until I have it near or maxed out, then in some videos(haven't noticed in iTunes musics) I get weird buzzing noise from the top left side of the keyboard. It rumbles and I think that is the cause of the vibration sounds. Any input would be awesome, thanks in advance.