SOUND: Fade in & Fade out

Hi every one :slight_smile:
this my first post

the code below load external sound file “bg.mp3”
the sound will play automatically.

i have a a buuton that load FLV
i want to FADE OUT the sound “bg.mp3” if i loaded the flv.
and fade in if i close the FLV

[AS]
var musicURL:URLRequest = new URLRequest(“bg.mp3”);
var sndMusic:Sound = new Sound(musicURL);
var channel1:SoundChannel;
channel1 = sndMusic.play();
[/AS]

Thanks for your help