So, you won't find because this program has been lost to time. However, I do wanna question what do people want, or expect of it, are you guys aware that you need to dump textures in both formats, Jabo and Rice, and it has a cmd thing that renames one file format (let's say, Jabo) with the other format's name (Rice)?
You probably won't be able to convert anything large scale like a project or something like that, as it requires you to find the proper texture to replace, this is not really a "converter", it's a "file renamer" lol, and honestly, for something like an specific individual mod (i.e. Finn Balor by kingkanyon), it would work I guess, but you can replace the textures yourself with any image editor that isn't paint. Say, you want to convert Showdown 64 to Rice, you would need to dump
every texture in Showdown in Rice's format and then set up each Jabo texture individually to be renamed the same as a specific Rice texture:
Jabo | Rice |
---|
01234567891011121314151617181920.png | WWF No Mercy#12345678#0#1_rgb.png |
20191817161514131211109876543210.png | WWF No Mercy#87654321#0#1_rgb.png |
... | ... |
If you're gonna do this, might as well do it manually instead of forever searching for an obsolete tool that will only waste your time even more, probably.