This app is a mouse-based loop scratcher. It's pretty simple: load an audio file, then get to whippin' that mouse around for those crazy DJ scratch noises. There are scant settings, but it's a very simple app, with one real purpose. Great for working in apps like Acid though, making your own scratch loops. The developer AnalogX makes a bunch of crazy apps, so if Scratch isn't your cup of tea, there might be something else on the site to interest you.