My Dad recently "ripped" a bunch of old vinyl (or even acetate) records into his MB Air. He has them in both the native format from my USB turntable and also MP3 which was then imported to iTunes. Naturally some of the recordings are pretty scratchy. Now to the question. He also just bought an iPad Pro. I was wondering if there are any suggestions for some easy to use software (freeware would be good, doubt he'd shell out more than a few bucks) for cleaning up some of the scratch, crackle and pop? Or is there something on the MB he could use easier?