You would have a couple options here.
- Ignoring the USB for a moment, you could use the headphones output into the Trackers input with the same kind of cable I linked before.
- Sampling over USB is currently in a public Beta. If you’d like to give it a try, you can find it at the link below.
Tracker Plus 1.1.0 & Tracker Mini 2.1.0 Sampling over USB audio Beta