Lookie what I found. It is Motu Audio Cousole {this is a hidden app which only can be run when ALL music applications are CLOSED.

I can now set the MOTU Hareware to 44100. Next comes the big trial...

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BIAB – 2025, Reaper (current), i7-12700F Processor, 32GB DDR4-3200MHz RAM, 1TB WD Black NVMe SSD, 2TB WDC Blue SSD, 1TB WD Blue, 2 TB SK NVMe, 6 TB External, Motu Audio Express 6x6