iTunes’ built-in cutting function is a great help for people who want to crop their music. However, you can’t preview the cut result so the whole operation process might be in vain due to the inaccurate cutting. Want to preview the trimmed file in advance for one-time cutting success? I highly recommend WonderFox Free HD Video Converter Factory which allows previewing your cutting song and exactly crop the file. Next, let me show you how to cut a song with this highly-evaluated free tool in detail.