Your friend most likely found one of the thousands of available pirated RPG scans that have been available for years via p2p networks and other sources. Virtually any RPG (including many from defunct small / indie producers from the late 70's & 80's) can be found if you have no moral qualms about using them. I'm not advocating this, just pointing out that the scans are out there and readily available while I don't think most of the titles in WoC's DRM protected release are (yet).