ill teach u pp sense everyone else thinks its a pointless feature...ok we sampled a 4 bar loop but its totally off sync with the track ur currently using and u dont trust akai bpm detector because i dont. so were not gonna use that bpm detector..instead were gonna use mathmatics to get the accurate bpm.. the original bpm is very important for pp.. go ahead and loop 4 bars of ur sample or 1 bar
heres the calculator ur gonna be using
http://mp3.deepsound.net/eng/samples_calculs.php
go down to "To find the bpm of a loop when its length in samples is known" and set that up. next ur gonna have to drop 16 slices and find all the downbeats add a slice marker there...now convert to pp and use the bpm that the calculator generated.. and there u go u have a dead on accurate loop..i use this pp for arpigios shit is sick for making them 303 sounds