Yes, I have switched over. Pattern 2 is red when I keep pattern pressed, but I can still only hear a loop of pattern one. I have set the default options for changing patterns so that when I press pattern + 2 while pattern 1 is playing, the sequencer jumps to pattern 2 after pattern one reached the last step of the scale. Any idea what could be the problem? This so far seems the best option of looping my samples and I take it from you that it should indeed work.
Thanks @sezare56 for the hint. But deranger‘s first solution won‘t work, because the sample would start at the beginning instead of the middle of my sample after 128 steps. I guess I will have to try the scale function then.