Sound during run
 

A student have a problem. He want to put some music during the film.
The sound begin but he wait before finish ,to run the next.
How can he run the sound . Thank for your help
Sorry for my english

So from what I understand, you want to have music running in the background, and another sound effect running at the same time. Is this correct?

Easy Way
 

An easy way is to create another "When world starts" event that references a short method that plays the background.
Then right-click the event button, and change it to a "While world is running" event.
This will loop the background music until the animation is stopped.
Other sounds you play during the animation will be layed on top of the background music.

Oops- That info was for Alice2.

In Alice3 you can add a new scene activation Listener that contains an infinite loop to play the background.