I just bought a new Macbook Air  yesterday, switching form windows vista. When i had windows vista the World of Minecraft client would not be extracted. (have no clue why). Any way i got a new mac thinking it should work now right?  I went through the process and it didn't work. All i'm asking is for a Tutorial from someone that has a mac and has the World of Minecraft client. If you could help i would very much appreciate it.