Is there any software that allows you to play .avi, .asf, or .rm files on a Windows CE based PDA? Windows Media Player supports AVI, but it only transfers the audio portion to the PDA.
In case it matters, I have a Cassiopeia E-125.
You must also have phenomenal vision, Dude. 
[squints to see display and turns widget back and forth in the light–is Bruce Willis kissing her or strangling her? I can’t tell…]
Does any of this help? I have no clue. The result of a Google search under “Cassiopeia E-125 video”.
http://www.3dgamegear.com/gameware/handheld/casio2/index.shtml