Missing libexpat.so.1 and libopenal.so.0
I'm trying to install a piece of software from its RPM. When I run rpm on it in the terminal window, I eventually get an error indicating that libexpat.so.1 and libopenal.so.0 are required and are missing. I can't find them or RPM packages to install them on my system (Mandrake 10.1 official), and have had no luck funding them on the web.
Has anyone run into this and found a solution? Thanks for any input.