I grabbed version 1.1 since my last post, a LOT of stuff was corrected, no more crashes due to music or otherwise.
And I seriously had a blast !
But now I just reached the final castle "Shadow Dungeon" and it crashes the game:
-when mario dies.
-when entering the Boss / Red door, arrrrg XD
I'm paying on real hardware via SD2SNES.
isaix, if you're still around, is there hope for a fix? I can of course provide my SRAM if needed.