>It looks like I will probably put it here: ~/Library/Application Support/Moi/moi.ini
Great.

>.. (which is stored in the path you show above there contained inside the .app itself currently)
I just discovered that the "open package" procedure I described is not needed to edit the ini file. You provide an easy way to edit the ini file from inside MoIs options which works well. Especially because I'm forced to close MoI before I do this. The ini file opens in Windows Notepad program supplied by Wine.