How to stop music in the script editor?

Well, here is the question.
How can I stop music from playing in the script editor?
Thanks in advance,
Mark
PS. Is there some kind of catalog, where all those commands are explained.
Then I don't have to ask all these questions.
How can I stop music from playing in the script editor?
Thanks in advance,
Mark
PS. Is there some kind of catalog, where all those commands are explained.
Then I don't have to ask all these questions.