double post, please delete. sorry!

I was wondering how straightforward would be to produce an effect on rhythmic, percussive material that:

a) Somehow mimics the pitch-shifting mechanics of turntablism (think gradual, continuous change of playback).
b) Would be capable of re-accomodating (syncing) playback strictly to the beat, be it 8th, 16 or 32 subdivisions. It could also be thought in terms of Hz though.

Perhaps b) is not that clear: suppose your messing around with your turntable and have a steady, pounding beat behind. Now, everytime you scratch the vinyl, the thing your playing will land at an arbitrary position around the beat (this would be noticeable especially at slower tempos or lesser subdivisions).

So, if anybody know if this is a simple thing to do in Max or otherwise, I would very much appreciate the feedback.