I installed Studio One 4 Artist and hooked up headphones to an AudioBox USB that I bought a long time ago and never used. I hear computer noises in the headphones until I open up Studio One. When the program is open, all sound is gone, can't hear computer noises or any playback in Studio One. I played around with a drum track, and I can't hear a thing when I press play. It's clearly a software problem.
What has to be done to the Studio One 4 Artist program to get the sound to work when it's open?