> possibility to have links in the source-html
> changed. Sort of find and replace before starting
> the download of the link.
> ex "....\\apps*" into "....\\newdirectory*"
> 
> Would be very handy
A lot of human work. You have to know that ALL files have moved, know the new
location, change the files directory name, update all references in all
files.

Just update the mirror. It will download the new files, change all connecting
references and purge the originals.