RPM conflict

I am trying to install the i386 version of gnome-libs on a machine that has the x86_64 version already. There are several packages that I have installed like this, but this one is presenting a problem. The problem looks like:

rpm -ivh gnome-libs-1.4.1.2.90-34.2.i386.rpm
Preparing… ############################## [100%]
file /etc/mime-magic.dat from install of gnome-libs-1.4.1.2.90-34.2 conflicts with file from package gnome-libs-1.4.1.2.90-34.2

I need to have BOTH versions installed for the requirements of an application that will be installed on this machine. I don’t really know what to try in order to get around this, and have not found much help on the web. Thanks for any help you can provide.