[Bastiaan]

its a digital thing...

when you have a transition (without fades) where the level sudenly changes (you will see this very clearly if you zoom in down to the sample) there will be a click/pop. What you can do is make a short crossfade between the 2 regions, or go in and straighten it out with the pencil. The pencil works destructivly....so be careful with that!!!

But for loops it works perfectly. Since it does alter the soundfile, you only have to do it once, and all your transitions with that perticular loop are smoothed out.