Was Pak64 ever made open source? If so, where can one download the sources for it? I should find it most helpful to have a pakset worth of sources when writing and testing patches that involve modifications to the ****ets.
Edit: Never mind - I have found them here (http://simutrans.svn.sourceforge.net/viewvc/simutrans/pak64/).
this link should be made more public, yesterday I was searching also.
I second the Dwachs.