MSU-1 for SNES9x Support please for RETRIX

[Slippy2k]

Hello could you please add MSU-1 in Snes9x support please for RETRIX?
RetroArch Supports MSU-1

[ghost]

@claudiuslollarius Correct me if I'm wrong, but I think this is currently not possible due to the fact that the MSU-1 support does its own I/O from within the core, and that UWP doesn't allow the traditional fopen() interface.

[Slippy2k]

MSU-1 games require a folder selection as with CD games.
I think that's called filestream in programming language :) or VFS. Unfortunately, I have no idea about that
In any case, MSU-1 SNES Roms must select a folder so that the audio tracks can be played!