which motu? I meant headphone out of the motu into the ot line in so that the ot can record what the motu is sending to the speakers. You’ll need a splitter cable called an insert cable I believe. Or if the motu has multiple outs, I would think you could configure them internally to mirror the main outs. Does the motu have a configuration editor to set this up?

In any case you could still put the ot between the motu and your speakers and sample like that.

Or am I not getting it?