might be this one:

http://puredata.hurleur.com/sujet-3199-bonked-beat-slicer

or maybe this one (that i made):

http://puredata.hurleur.com/sujet-1953-sample-slicer-user-selectable-slices

if not, search the forum for 'slicer' and pretty much everyone has had a go making one at some time or other :D