* Our users report you can change the .wmv files by other ones and they'll play on the 360 (without Windows MediaCenter PC)! Example changing '/videos/pgr3.wmv' file with another wmv-hd video will allow to play your wmv-hd video by booting the disc and going to games>pgr3>play video.
* PI's nfo file says: "datafiles on this disc isn't signed in any way". PI is right here, but many people don't understand this correctly. They mean datafiles like wmv, png, ... aren't signed. XEX/EXE files are still signed. The reason these executables run on recordable media is no 'hacking', it's simply because Microsoft set the 'mediaflag' so it can run from DVD+-R too. Nothing is changed in the XEX files on the disc, so the signatures (in XEX header) are still valid.
* You can't use this disc to boot retail discs/games (like by placing them in the /demos/ dir) as those are set by Microsoft so you can only run them from DVDXBOX(360) media (and might have a DVD physical structure check too?).
* Everything is playable, also the game demos (each has its own XEX/EXE file)
* If you add/remove files on this demo disc it'll still boot (as long as you don't remove essential stuff like /default.XEX of course), so this demo disc has no integrity test of the DVD.
* I'll also boot from other media like CD-R (like putting 1 game demo on a CD-R).

Here are some other interesting details from Arakon on the xboxhacker.net forums:
* It's a simple ISO file you can read it with any ISO extractor. You can also browse the burned DVD in explorer.

* The Live Arcade games are infact standard flash games (atleast Hexic is). You can run Hexic in a browser that has the flash plugin installed. So the default.xex in the hexic dir might not be more then a flashplayer. He tried replacing the hexic flash file with another swf file, but the Xbox crashed (black screen) on that. If working ... it could be interesting for some homebrew flash games :)
* The playable demos are not accessible if the Xbox 360 launguage is set to German (it probably only works if set to english).
* There are more videos and pictures on the disc than those accessible via the Xbox 360 interface.

*NOTE* Do not ask us or anyone on the forums where to find this disc. This disc is copyright protected and can't be legally distributed.