Bachus you maybe need to read it a little better....

"the full windows OS installer disk for the all groove and Mediastation too.
In this way then the user can choose wich OS booting: Linux or windows."

The full OS Installer disk is the key. If you had a MS you would understand what OS installer disk means. usually it is the ISO for end users to burn and instal disk with the (currently) Linux Kubuntu distro, WITH all the media Station drivers.

Thats how I understood his comment. Maybe Dom can clarify a little further.