Strange, this system works natively in mGalaxy, without any modification, perhaps I have already updated my version.
But you need to load with the *.cue never the *.iso (never the *.bin in reality, *.iso don't need *.cue)
Why ?
Because in the *.cue file you will have all the files
CATALOG 4949830010024
FILE "Crossed Swords (1994)(ADK)(Jp)(Track 01 of 27)[!].iso" BINARY
TRACK 01 MODE1/2048
FLAGS DCP
INDEX 01 00:00:00
FILE "Crossed Swords (1994)(ADK)(Jp)(Track 02 of 27)[!].wav" WAVE
TRACK 02 AUDIO
You can run it with the *.iso, but you will have problems, like strange crash or no music.
Have you full *.iso with no *.cue file ? Because in reality it s *.iso or *.cue+*.bin. On my system I have *.cue+*.iso so > *.cue.