Firefox x86_64 with 32-bit Adobe Flash
The Adobe Flash plugin is not available as an x86_64 package. If you
need to run a 64-bit browser, but need Adobe Flash, you can use ndiswrapper to run the 32-bit Adobe Flash plugin on the 64-bit Firefox browser.
First, install Livna's release package for Fedora 9. This will provide you with access to Livna.org's Fedora 9 YUM repository using /etc/yum.repos.d/livna.repo.
rpm -ivh http://rpm.livna.org/livna-release-9.rpm
Next, install ndiswrapper from Livna.org.
sudo yum -y install ndiswrapper
Now, install both the i386 and x86_64 packages for nspluginwrapper from Fedora's YUM repositories
sudo yum -y install nspluginwrapper.{i386,x86_64}
Finally, install the i386 version of libflashsupport and the i386 version of pulseaudio-libs (for flash sound support).
sudo yum -y install pulseaudio-libs.i386 libflashsupport.i386