Installing flash on CentOS

   Simple solution:

http://www.yqed.com/install-flash-player-10-centos-64-bits/

1. Start by installing those libraries (.i386 and .x86_64):
# yum install curl compat-libstdc++-33 glibc nspluginwrapper
2. Once done with the kitchen work, it is time to install the Flash Player RPM.
# rpm -ivh /tmp/flash-plugin-10.0.12.36-release.i386.rpm
3. Close all Firefox windows and open a new one. In the address bar, type:
about:plugins

 There you go.  Thats it.  Have fun playing kitten cannon.