Well, like I said, the keyboard does have an audio out port (size 1/4in). I have an adapter that has on one end a male 1/4in jack. On the other end is a female connection (size 3.5mm). On my computer, I don't have an audio in port, only USB (damn chromebooks!) What I am trying to do (since this model of keyboard doesn't have a record function) is record keyboard sounds on my computer. From there, I will use Audacity or a similar program to arrange the sounds/create loops/etc. You said that USB doesn't carry audio, does that preclude me from doing any of this since my computer doesn't have audio in?