Your code is fine but you need to put the sound file in the
same directory as your Flex app or specify a different directory
for the source. Flex is looking for the sound but cannot find it
which is why you are getting the error.
ya, it's works. thank's.
after i check my code. i have fault in the source url :
i just copy paste url from windows explorer :
and it must be "C:/ConvertedFiles/pakmardi.mp3".