Can do it! I have 10 years of experience in the field, and I edited audio thousands and thousands of times. I am a pianist(have a degree in classic music), composer, arranger and sound editor. For what I understand you are willing to pay $60 for the job, yet I am not interested in more than the $52, so you can create a milestone of $5 and the 47$ after my job is done, or something like that. But, before everything, I would need to hear the sound file, to have an idea of what we are dealing with here. Have a great day!