well..I don't guarantee this works, but you could try:
1) go to rpm.pbone.net, for example, and look for an rpm-package that contains the file you need
2) download the file to your machine
3) get a program called rpm2tgz (I think that's it's name)
4) using rpm2tgz, "extract" the rpm package to a tgz-one
5) gunzip/untar the file you got, and if you get the file you need with this method, put it where your app looks for it...
I haven't done this myself so I can't say it works for sure...and I've used that app to "extract" an rpm package to tgz-format only once, so I don't have too much experience of that too...but at least that's a try, if you can't find the file itself anywhere
and if it doesn't work, and you can't get it out, you'll loose nothing.