I haven’t found such think as Loop Tweaker. But I have inserted 3 secs of silence after the end of sound and 3 seconds before the start. This your mentioned “tick or Click” can be heared both at the end and at the start as soon as playing line crosses the point between silence and sound. I really need to vanish this “Click” because it would let a listener to determine starting and finishing point. And therefore to think that technology I use is useless. But I’m sure this “click” sound is inevitable because of technological/physical laws. I need to keep clean sound without that click.