Map music is not loaded from the episode folder: in the original game, if there's a music file with filename "map" (e.g. map.xm), it is played on the map menu. This does not seem to happen in this port.
If you kill The Evil One (music will stop), the hiscrore music will not start to play when you reach exit: if the player kills a sprite with the AI property "The Evil One", the level music will stop playing. This works as intended, but in the original game when the player reaches exit, the hiscore music will still start playing. In this port, the hiscore music will start playing only in the hiscore screen if the Evil One has been killed.