According toBerserk Goose, a moderator on Xbox Live The Guide Forum, downloading and creating your own playableGuitar Hero IIIdemo is as easy as following a short list of instructions (which you may find past the jump). Assuming you have the ability to download files, use a PC to sort through them and burn them to a DVD, you shouldn’t have any problem getting a sneak peek atGHIIIfar earlier than Activision would have liked.
It took me about 20 minutes to complete the instructions, the bulk of which was spent downloading the file, and I can confirm that the method used works for me. A few people seem to be having issues, but if you follow the instructions to the letter, you should be fine.

Normally this is the point at which I would make a joke about Owen Wilson’s drug habit or his avian beak of a nose, but honestly I’m too giddy to want to push him even closer tohari-kariseppuku than I already have this morning.
http://www.megaupload.com/?d=5OX44D2U

Burn to a CD or DVD
You have to get the “Content” folder and put that (with everything in it) onto the DVD/CD, the demo will be where the other demos on your 360 normally are (game blade, demos and more).

5 songs on the demo






