Seems like this document has quite a few flaws in terms of songs that work with NintSPC, some games are listed even though they don't seem to work, like Super Tennis and Sim Earth, even with a fixed convall.bat and a removed --np.
Still, besides that it's really useful for getting into NintSPC, great job on writing it!
While AddmusicM is obsolete now, you can just use AddmusicK with #amm, so a lot of stuff is still relevant (besides some samples related syntax. AddmusicK's readme does cover that though).
Also worth mentioning that VCMD_PERVOICE_TRANPOSE can actually be replaced with $FA $02.