PaRappa the Rapper Decompilation
The instructions for this should largely be the same as PSXFunkin without the iso makes.
You must have a PaRappa the Rapper iso to create a playable iso. Extract the contents to a folder here named iso/, and make sure the XAs and STRs are of 2336-length sectors.
I used jPSXdec to extract the iso contents, which exports XA and STR as 2352-length sectors. There's a tool here (syncstrip) that will cut these down to 2336-length sectors.