Further investigation showed that the songs "jeu1.xm" and "jeu2.xm" are not missing after all but: "jeu2.xm" is played (on the even levels as it should) "jeu1.xm" is NOT played (it should play on the odd levels)
Further investigation showed that the songs "jeu1.xm" and "jeu2.xm" are not missing after all but:
"jeu2.xm" is played (on the even levels as it should)
"jeu1.xm" is NOT played (it should play on the odd levels)