You can install Flash Player to your hard drive, like I do, and activate it with a script. I am sure it would also work with other storage also, if you specify the mount points. Your mount points will be different than mine, of course. Off subject, I also have a RealPlayer icon and Windows Media Codecs install with the same simple script I use to easily activate Flash Player. I install the two Flash Player files on my hard drive at /mnt/sda1/flash. I install RealPlayer8 with the installation program at /mnt/sda1/RealPlayer8 instead of the default. I unzip Win32 codecs at /mnt/sda1/essential-20050412 from the mplayer site. I then write a script in a text editor named Multimedia. It goes:

#!/bin/bash

mkdir /UNIONFS/usr/lib/win32
cp /mnt/sda1/essential-20050412/* /UNIONFS/usr/lib/win32
ln -s /mnt/sda1/RealPlayer8/realplay /home/root/Desktop/RealPlayer8
cp /mnt/sda1/flash/flashplayer.xpt /UNIONFS/usr/lib/mozilla-firefox/plugins
cp /mnt/sda1/flash/libflashplayer.so /UNIONFS/usr/lib/mozilla-firefox/plugins

Then make sure the script is executable (right click on Properties, check "executable" under permissions). And make sure it is available to all users, too. Each time you reboot, just click on the script wherever you have it and you are ready to use RealPlayer, Flash for Firefox, and Xine with windows codecs. Of course, I run as root by booting as Knoppix 2, but once you have installed the stuff to your hard drive, it should work running as user. The /home/root would be replaced, of course, by /home/knoppix or whatever your home directory desktop is.