That is not what you wrote in the first post. Using exclamation marks does not help as well
It would be best if you post the example that is not working and provide the sound file that is not working, with a detailed explanation what is not working as expected.
Anyways, a BackgroundMusic sound is not well suited for short-playing sounds but for long-playing background music. For such short sound files, use SoundEffectVPlay and a wav file.