Ok, It wont play on other machines because you have not "Finalized" the disc. Once you have finished your recording on your dvd and before you remove it from the drive, press the setup button on the remote.
Select DVD menu and press OK. Select "Finalise" and press OK then select Yes and press ok.... It normally takes forty seconds to a minute to finalize and you will see a percentage graphic on the screen. Once this has completed your disc SHOULD play on any DVD player.
The E25 is a different kettle of fish altogether. This is a macromedia encryption which prevents you from copying copyright material. I am presently searching the internet to find the easiest way to by pass this... without much joy I might add.... I will reportback if and when I find out something
Geoff, July 2010