Hi guys, I don't know if this kind of topic has been discussed before, but i really need your help. I'm using macbook white 2010', my problem is, what do i need to play guitar through my macbook? Also, hows the sound of guitar using garageband? Do i need to upgrade any drivers in order to play thru my macbook? Lastly, i have a mixer amplifier http://www.toaelectronics.com/images/img_amp/A-912MK2 Front.jpg Would it work for this project? Thanks.