thats left to to admins to handle this issue, if they do not want to include source code, then i guess they can just remove the app from the site.
if you are seriously wanting source code, and not just complaining about a infraction of the GPL (which Michael Robertson would be a better candidate to complain about for not hosting source code from all the code he has used from the Debian project to build his Lindows OS, check that site, not a drop of source code), but if you wanting source code you can get just about any version of VirtualDub with sources here
http://prdownloads.sourceforge.net/virtualdub/
DC++ and sources
http://prdownloads.sourceforge.net/dcplusplus/
just another reason the GPL is considered viral in nature, better to use a app under a BSD license so you can exclude the source code if you chose. but thats another debate not for this board.