Jukebox and music script

[Lemonegg]

Hello. I have a small problem and a request. My problem is that i cant get music that is playing in one level to stop when i touch a certain NPC designated to stop the music. The music and the stopsound or music in in the same NPC, and i have no idea why it wont work. I need some help with that.
I also have a request. I have a friend drawing me some GFX for various NPCs, and one of which is a jukebox. I have not figured out how to script it to change the song when someone slashes at it with thier sword. If you could, please help me with my request. Thanks!