Do you mean to redownload some of the projects? If so for 
the most part I can't because they are no longer online 
and were mostly pages from forums which after the site 
which I downloaded from does a clean up a lot of the 
threads are deleted periodically. :(

Is there another safe way to backup the projects as they 
are,with for example another burning program which doesn't 
need to save the files as ISO9660?