So I can access the manuals and reference cards but where are located wallpapers, avatars and the soundtrack mentioned to be part of the package?? They sure aren't in the installation folder...

Gog should really add a note where to find those just like Steam does everytime there is a bonus pdf or similar..

You download the extras manually. Go to your shelf and download them.

Ha! As I always send the downloads straight to gogdownloader I never actually visited the 'shelf' page after the initial registration.. Thanks! ;-)

Hopefully with the new downloader they're making, they'll add the options to download the extras alongside the game. It would be handy!