Hi!
write the line player=me; topmost of your models action.
If "player" is used by an other model you have to create an own pointer for your model, e.g.: entity* my_player; write the line my_player=me; topmost of your models action and replace all "player" with "my_player" in the music-scripts above.
The best is you learn to understand how to work with pointer/handles/entities/...