Questions on Smooth Voxel Terrain

Hi, so i have been working on a project for a bit now and iv'e been stuck on something for a while, i want to generate smooth voxel terrain, but so far I could only make "minecrafty" blocky style terrain. iv'e done research on marching cubes and things like that but i just cant figure out how use it, i'm using a multidimensional array to place the cube voxels. now i need to figure out how to create smooth terrain out of it, then hopefully i can make a way to add and delete terrain from there. Any help would be amazing.

 

Hmmm... Perhaps you are looking for the graphics or even scripting part of this forum?