I have tried this conversion many times in an attempt to get better sound quality in this game... (especially with the wind / background sound effects which just seem overdriven)

I am getting an error after it finishes converting (but not renaming) the files off of the Realta nua disc.

Okay it seems like the converter wants to be pointed at the folder where the installed .xp3 files are, not the compressed .xp3 files from each disc. - Applied the mirror moon translation and am attempting the conversion again now... crosses fingers and goes away for two hours