seamless region copying (looping)

Hi, I have this loop in ardour that I have built from samples and recorded guitars, basses, etc that I want to copy seamlessly for couple of minutes forward (like looping). The loop is not in a beat grid, just from one mark to another and plays inside loop points. Is there any easy way to copy non-beat regions multiple times in synch without having to find & put every time a new location marker to last loop’s end ? I know I can just record everything that is looping to another ardour instance for as long as I need, but i’d like my samples to stay as separate clips.


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