A long time ago I found out that Wiiflow can be used like a front end for retroarch, -I love this combo-
Anyway, this is the way you config Wiiflow for plugin.
[PLUGIN]
magic=46434D4D
fileTypes=.nes
romDir=media/games/roms/console/nes
dolFile=retroarch-wii/fceumm_libretro_wii.dol
bannerSound=sounds/nes.ogg
arguments={device}:/{path}/|{name}
… and from an old issue for Wiiflow accord to fix94:
Thats easy to do, the tricks are | to do multiple arguments, you dont want to use spaces or whatever, just use | to say wiiflow to use argument number two. So, if you want something like Play.dol /mp3 usb:/mp3/<mp3 file> in args form, may try arguments=/mp3|{device}:/{path}/{name} That should do the trick.
In other side Retroach can receive a lot of parameters, is there a way to achieve this together via Wii? With this option, you can send a custom config.cfg file or any accepted parameter of Retroarch.
Any help will be appreciated, thanks!!