Most of them will work if you just change SonicFoundry to Sony in the import statement at the beginning of the script. While there were a few scripts that required more changes, 95% of them only require this one change. You can just open the script in Notepad and do the change yourself.
Yeah, I don't think he ever bothered filling that top link to new Vegas 5 scripts. But the link to updated Vegas 4 scripts works fine, and I believe that's what RichR was asking for.