What software / solution can change one given digital IP address in the URL to another?

Question

Windows

Good afternoon!

There is a computer running Windows 7 SP1 64 bit RUS

From this computer, a certain movie is viewed via flash in the browser, which is a sequence of small TS-files scattered over several servers with digital IP addresses. These servers can be conditionally divided into "bad" and "good". "Bad" servers constantly give a "404 Not found" error, but the file with this path is on the "good" servers.

Therefore, it is required to automatically replace the URL of the form
xxxx/some_path_extension_name
with
yyyy/same-path

where the pairs for conversion are xxxx->yyyyб zzzz -> tttt, etc. are set in advance.

Is there any locally installed program under Windows 7 that can solve this problem? Desirable, not bulky, easy to set up and free (or inexpensive).

PS:
1. I contacted the technical support of THAT site - the result is zero.
2. Do not offer to go to another site - the content is unique for me.

Answer 1

Well, you can raise the local DNS and register a zone for this address there.
I did this for torrents.ru in ancient times, when they divided the domain.
You can also register in hosts, but I try to avoid this method, because it's too oaky.

Answer 2

Addresses are pure IP, so neither DNS nor hosts will help here.
Therefore, you need either a proxy, and not just any, or somehow chemically with the server address in IP packets.
By the way, all the plug-ins for FireFox I found for modifying the URL do not work on the flash player, although all the jackdaws are.