LOL First time doing this in a long time. Was pretty nervous. Anyways here as you see its me playing Legacy of Kain Soul Reaver the unofficial HD Remaster. It uses Flycast which means it uses the Dreamcast game. So no its not compatible with PSone or PC. As far as I know the Dreamcast version was by far the superior version to have. Dreamcast had far better textures that PC and PSone didn't get.
If you would like the mod you can grab it from:
(Please read all information on the site before downloading to setup properly)
If you want to purchase the game you can grab it from ebay.