If someone would like to give it a try, you may find an ipk on http://zaurus.maxg.info
Please note that it depends on some package that you will find in the pdaX feeds (see http://mail.pdaxrom.org/rc10/)
It was built with quite a lot of codecs, most AVI and all MPG files should open without reencoding, if they are playable by the Zaurus (ie not too big !)
If you just install the package and open a video, you won't notice any difference with the 1.0pre5 of the pdaX feed.
However, I included an optimized config file in the IPK. Install it by typing
cp /etc/mplayer/mplayer.conf ~/.mplayer/conf
This will use Xfbdev for video output, which is rather fast. I got the best result without X (fbdev doesn't need a started X server). In the pdaX root console try
mplayer /path/to/video/file -fs
So, do you notice any difference ? Please give some feedbacks !
P.S : this was only tested on SL-C1000. SL-6000 users, I'm curious to know whether it plays videos in portrait or landscape mode ?
Have fun !
---------- Edit ---------
I've added the IPK of ScummVM 0.7.1 as well. It compiled flawlessy. Now I can play the Curse of Monkey Island, Fight of the Amazon Queen and Broken Sword on the Zaurus, yay ! Use CTRL+F or CTRL+G if you have some lag, it sometimes helps.
Hope you'll like it !