This is a sampler patch for REAKTOR which uses a 'jittering' playhead - that is, it moves backwards and forwards rapidly - in order to create glitchy sounds. You can customise the strength of this effect, as well as alternating between different 'jitter shapes'.
Demo track contains a 'before and after' for a scratch sample.
Please take a look at the included readme for more detailed information. Feedback is appreciated - I'm still figuring this whole thing out!