Note: You'll need 1.1.1 of Massive for these presets

To install, unzip to your Native Instruments Sounds folder. For windows users this is typically c:\Program Files\Common Files\Native Instruments\Shared Content\Sounds\Massive. For Mac users it should be a similar path.

After the sounds are copied to the proper place, start Massive. Go to File -> Options -> Browser. Click "Rebuild DB", then OK an dthe sounds will be added to the database.