How to permanently decrease volume in audio file

[jesusfr3ak4evr]

I need to decrease the overall sound output of a .wav file by 90%. I'm making a Camtasia powerpoint presentation with voice, and I want a music background. However, currently the music overpowers the voice, so I need a way to truly make it background noise. Camtasia's features aren't good enough for this operation.

Also, I can only get .wav to import into Camtasia 6.02. Does anyone know of a way to get a .mp3 file to import?

Thanks!!

 

[p997tt]

Have you tried using audacity? It's a free software. You should be able to easily decrease the volume of your wav file with it.

 

[obobski]

audacity will drop the volume of the file, through its built in features

and can convert mp3->wav and back, as long as you have lame to make mp3s