I went ahead and changed this post (thanks Abyssul). I've removed the link to the file - but - Abyssul has given us an even easier method. Here's what you do:
Go into webOS quick install on your home pc - you can find it here:
http://forums.precentral.net/canuck-...-v4-2-3-a.html
Run the program, select the TOOLS tab, and pick LINUX COMMANDLINE. Make sure your browser is closed on the touchpad.
You should now be in a terminal at a command line looking at your touchpad

.
Now type the following -exactly- (ALL ON ONE LINE, not two lines):
cp /usr/lib/BrowserServerPlugins/libflashplayer.so /usr/lib/BrowserServerPlugins/libflashplayer.so.bak
Now type:
cd /usr/lib/BrowserServerPlugins
Now type (again, ALL ON ONE LINE):
sed -i 's/WEB 10/WIN 10/' libflashplayer.so
Finally, type:
chmod 755 /usr/lib/BrowserServerPlugins/libflashplayer.so
TADA, hulu works.
Want to reverse the process? Simply type (ALL ONE LINE):
cp /usr/lib/BrowserServerPlugins/libflashplayer.so.bak /usr/lib/BrowserServerPlugins/libflashplayer.so