I am in the process of setting up my core and slowly getting the kinks ironed out. One of my first issues is that Flash support is not native to AMD64 setups so the Adobe process for installing it will not work. (Since one of the biggest selling points I used on my wife for permission to buy all this new equipment was that she could watch her shows on Youtube full screen on the TV, I needed the flash plug-in quickly)
Anyhow, although this is a linux specific thing not a LinuxMCE specific thing I figured that enough new users of LMCE were also linux newbies so the solution I found may be of use.
I got this procedure from a German linux site (http://blog.jbbr.net
) and it worked perfectly for me.
first in the KDE desktop, open the console
sudo apt-get install nspluginwrapper
(it may ask for your password, which is linuxmce, if you installed from the DVD)
tar xvfz install_flash_player_9_linux.tar.gz
cp install_flash_player_9_linux/libflashplayer.so ~/.mozilla/plugins
nspluginwrapper -i ~/.mozilla/plugins/libflashplayer.so
close firefox and then reopen and test, it should now play flash
hope other newbies find this useful