Adding Sound to Bouncing Ball

Hi. So here's the deal. I have a as 3.0 .fla where a ball is just roaming around hitting walls and I would like to play a sound each time the ball hits one of the stage's wall, just like this.

I have this on my file:

Code:

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var snd:Sound = new Sound(new URLRequest("TennisBall.wav"));

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And on each if (when the ball hits one wall and changes it's course) I have:

Quote:

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snd.play();

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Each time I run the game, I get no sound and the following error message:

Quote:

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Error #2044: Unhandled IOErrorEvent:. text=Error #2032: Stream Error.
at game_fla::MainTimeline/game_fla::frame1()
ArgumentError: Error #2068: Invalid sound.
at flash.media::Sound/play()
at game_fla::MainTimeline/moveBall()

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What am I doing wrong here? All the code is placed on the first frame in the timeline. :(

Thanks.

are you certain you can load an external wav file? I havent tested this lately, but older versions of flash only supported external mp3 not wav.

Not sure what you mean as I started messing around with flash. I´m using flash cs3.

try loading mp3 instead of wav

How do I do that? Is my previous code correct?