Is this version of Playscii intended to build on 64-bit versions of Mac OS?

[BrendanJercich]

Commentary on the Itch storefront seems to hint as much: https://itch.io/post/4747062 But I'm having trouble running it on Monterey/12.4. Specifically, I get the same error in response to python3 playscii.py on this repo that I do on the main repo from Heptapod, which is:

Traceback (most recent call last):
  File "/Users/brendan/Library/Mobile Documents/com~apple~CloudDocs/Code/playscii-source/env/lib/python3.9/site-packages/sdl2/sdlmixer.py", line 79, in <module>
    dll = DLL("SDL2_mixer", ["SDL2_mixer", "SDL2_mixer-2.0"],
  File "/Users/brendan/Library/Mobile Documents/com~apple~CloudDocs/Code/playscii-source/env/lib/python3.9/site-packages/sdl2/dll.py", line 194, in __init__
    raise RuntimeError("could not find any library for %s (%s)" %
RuntimeError: could not find any library for SDL2_mixer (PYSDL2_DLL_PATH: .)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/brendan/Library/Mobile Documents/com~apple~CloudDocs/Code/playscii-source/playscii.py", line 31, in <module>
    from sdl2 import video, sdlmixer
  File "/Users/brendan/Library/Mobile Documents/com~apple~CloudDocs/Code/playscii-source/env/lib/python3.9/site-packages/sdl2/sdlmixer.py", line 82, in <module>
    raise ImportError(exc)
ImportError: could not find any library for SDL2_mixer (PYSDL2_DLL_PATH: .)

I have no experience with SDL, so I'm fumbling in the dark here, but I have tried setting the PYSDL2_DLL_PATH environment variable to point to (eg) the sdl2dll directory tucked away in python3.9/site-packages in this copy of the code, which doesn't seem to affect anything.

Are you able to run Playscii on 64-bit Mac OS? Have you seen this issue before?