Problem After Changing Address

I run a WordPress site with a large amount of files hosted on it for downloading. I recently changed the IP address of my home server and fixed the IP address in all the places i could find. So now my site appears to be working however all of my download links give me 404 errors as well as pages provided by plugins. As i said i host MANY files and i would really rather not have to re-upload every single one. So I’m hoping someone else may know a quicker fix to this problem? Many thanks given ahead of time!