Hi Marco,

For the nodes editor, I think the most recent release is here:
http://moi3d.com/forum/index.php?webtag=MOI&msg=7713.76

and the installation instructions are here:
http://moi3d.com/forum/index.php?webtag=MOI&msg=7713.34


> A sort of repository where it would be easier get all the most recent versions of
> all the project files, rather then get all the stuff here and there in the forum's threads.

Max has a repository of his plug-ins here, except I don't think the node editor is in there yet:
http://moi.maxsm.net/media/files/

For now you would need to get it from the above forum thread.

- Michael