audio different in game than preview?

In my editor i have music, i made the audio file in audacity. It is saved as a Wave format or a .wav When i play the sound in the preview box at the side it sounds perfect but when i put the audio in game it sounds horrible it sounds like interference has been put over it. I am currently using it as a 3D sound because it sounded even worse as 2D even thought i want it for background music so ideally i would like it 2D. Does anyone know what could be causing this?

I found the problem but i have no idea y this happens. I was using a script to do audio.PlayOneShot(music); playing the music like this messed up the quality. When i turned off the script and just used play on awake it sounded great, however i dont want it to play on awake anyone know what is wrong?