I have 11 years of Flash Development experience and I'd be willing to take on this project.
This would take 5 days to finish.
Some questions though:
1. For the working version you have already what do you mean by fix wav distortion? Does this mean it is not playing wav files cleanly?
2. So if the working version is okay does this mean I have only 2 tasks? Adding the volume and fixing the wav distortion?