Thanks for adding this! It appears there are issues with playing it with the Itch app, but I have no idea why...I tried to read Itch's "Integration guide" for the app, but it wasn't very helpful in figuring out the issue. I couldn't find anything that would point me in the direction of figuring out why it can be played fine on the site but gives errors in the app...
I think the issue might be that the filepath has an escape character in it (the dollar sign, %24), and while that will work in the browser (the browser needs to escape it, in fact), it may not work with the desktop file manager. This is why I think it works fine in the web version but not in the desktop app.