Loading new mp3 to replace current

1

im just starting out with as3 my first projects are to rebuild alot of my old as projects.
im starting with an mp3 player…
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var musicURL:URLRequest = new URLRequest("music.mp3");
var sndMusic:Sound = new Sound(musicURL);
var channel1:SoundChannel = new SoundChannel();

function stopClick(evt:Event):void {
channel1.stop();
}
bStop.addEventListener(MouseEvent.CLICK, stopClick);


function playmusicClick(evt:Event):void {
channel1.stop();
channel1 = sndMusic.play();
}
bMusicPlay.addEventListener(MouseEvent.CLICK, playmusicClick);

//LOAD NEW MP3 INTO CHANNEL 1

function playmusicClick2(evt:Event):void {

<b>musicURL=URLRequest("music.mp3");
sndMusic=Sound(musicURL);</b>

channel1.stop();
channel1 = sndMusic.play();
}
bMusicPlay2.addEventListener(MouseEvent.CLICK, playmusicClick2);

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im having trouble reusing the urlrequest, sound on channel1.
it works if i recreate the objects URL request and Sound

function playmusicClick2(evt:Event):void {
channel1.stop();
var musicURL:URLRequest = new URLRequest("music2.mp3");
var sndMusic:Sound = new Sound(musicURL);
channel1 = sndMusic.play();
}
bMusicPlay2.addEventListener(MouseEvent.CLICK, playmusicClick2);

im guessing i would be able to reuse the already created URLRequest and Sound objects correct?
how would i reuse those objects?

thanks for any help!

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