Snes9x v1.51 Improvement 4 发布

Snes9x v1.51 Improvement 4 发布，这个和之前发布的V1.43的不同在于，它是基于官方的V1.51版上改良的，新版改动如下

- Changed to indicate ignored frames while playing a movie. (gocha)
- Win32: Added ForceOutputSound option.
- Win32: Changed to keep fast-forward when the window is activated if toggled fast-forward mode is used. (gocha)
- Win32: Fixed position saving problem with multiple moniter. (OV2)

下载：Snes9x v1.51 Improvement 4 发布