I am having problems with a sound file when publishing as an .exe.

The sound plays fine on every media player I have on my computer. The sound plays fine when testing from the library. The sound plays fine when publishing as a .swf or in test movie. However, when I go to publish as an .exe, it develops a constant thump.

I have tried every compression setting and still get a thump. I put the sound file in an .fla all by itself, still thumping. I have tried it as a .wav and an .mp3, still thumps. Why would it do this in .exe only? Any suggestions? This is driving my nuts.