￥Roland Fantom X 8 + String Expansion [Kontakt] i have been using Kontakt 4 but it worked fine with version before I upgraded will also work in Mac and Windows you will need about 8gigs of free space. to install all you have to do is unarchive the dmg file and drag the Fantom folder into your Kontakt Library but you choose to place it in another location that will work just fine i just like keeping everything simple and as easy to access as possible.