That's a source rpm. It's simply an rpm package of the source code so that you can compile it yourself. On my box, rpm -i filename.src.rpm usually dumps the tar.gz in /usr/src/RPMS/. This may vary on your box, but check there first
If all else fails,
Code:
cd /
find . |grep -i filename
When you find it, you can use 'tar -xzvf filename.tar.gz' to extract it. Then, you'll have to compile it. That's normally as simple as:
./configure
make
su -c 'make install'
Good luck
-- Shade