THIS IS OUTDATED DO NOT USE IT
This is the Project64 EXE file alone. Extract the EXE file on a very recent build of Project64 folder (you can get one on EmuCR).
Retail 64DD IPL ROM is required. Not the IPL4ROM, watch out.
Load a disk file (they don't appear in the ROM Browser), it will ask you to load Retail 64DD IPL ROM. It will keep the path to the IPL ROM for next time you load a disk. (So you don't need to search for it again.)
I should mention that SAVING or disk swapping is NOT supported yet.
This is only to be able to play the original 64DD dumps.
ALSO ONLY INTERPRETER WORKS WITH 64DD IPL ROM (you also need to set 8 MB of RDRAM else it doesn't work)