Aside from that April Joke (I also remember it), FFIX wasn't ever released for PC. However, if you want to play it on a PC and have a fast enough computer, you can try an emulator called ePSXe. It plays otherwise just as well as the PSX version, except you can choose the resolution and use your video card to enhance the game with 3D graphics, so the game will look a lot better on a PC than on a PSX.