Technically this is an oversight because we use a different input-mapping sourcefile (not the default one from desktop) and this one only provides button mapping for Wiimote.
The newest version (continious build) provides a way to enter the Debug menu
Enable TestPlay mode from command line (as you already do) and in the ingame menu you see a new option “Debug”.
When the menu is disabled (Ib e.g.) you can force call it with “Hold SHIFT and while holding press B 5 times”. SHIFT = Wiimote A, B = Wiimote 2
Yeah I agree on your points. How we do it is not the best way and could be placed in a more prominent location.
Have to check if dokuwiki allows such table coloring, not sure. But such a fancy table as on that linked page is not possible.
Only Encoding works there because that option was added years ago. The command line is a newer thing. But supporting this stuff through INI is planned for the 0.5 release which comes in a few weeks.
We can’t provide a nice zip download for this due to license issues.
I recommend you to use the RTP from Don Miguel for 2000 and RPG Advocat for 2003 if you usually play European games only.
Most published games actually use the pirated version (illegal translation), so you will have more success with the inofficial RTP translations then with the legal ones 
@Mr.Faq2014
The 3DS build got fixed and works with WAV, OGG and MP3 again.