Format Factory is a great free file conversion program. While there are some files not supported, I think you can get it done with this. I think Sony Acid is wav files, and they should be convertible to mp3 with format factory. Make sure after you install and start up, that you click the audio tab on the left, then select "all to mp3" and then at the bottom you browse for you song file that you want to convert. Browse for your output folder at the bottom then click ok at the top. Then it will go to another window where you click start.
Thanks! I see where i can add the file to library in itunes and it should work, but it isnt yet, and im gonna download the format factory, I think i might have figured it out using the itunes technique with windows media player. Thanks again!!