Using reaper live

You can use it live but the results would be inpredictable, especialy if you want to select and zoom as the sound is recording. Thats a big trouble...

don't use your headphone output, and use DI boxes (with ground lift switches) to link your line out signal to the live desk would be the first step.

thanks for all your help. I'be just ordered one of these hopefully it will do the job