hey guys. I can't seem to find the video on youtube, but I've seen it before. it was a video of a guy demo'ing a pedal, and he had a loop playing in the background on his DAW while he tweaked the knobs to show what a pedal could do. I'm wanting to do this, but I can't figure it out. I tried running the interface output into the front end of my pedal, and then into the input of the interface again, but it just created horrible feedback. any help?