I don't see much ethically wrong with it. I do have my doubts about your potential earnings. Music itself will earn you peanuts(cents). Though if they click thr

I don't see much ethically wrong with it. I do have my doubts about your potential earnings. Music itself will earn you peanuts(cents). Though if they click through your affiliate link and end up buying a bunch of other items, you can make 4-5 bucks/order. With couple hundred downloads a month, I just don't see the math adding up to much significant revenue. But hey, can't hurt to try!