Detect system audio

Hi there. Is there a way to route system audio in Logic to Scaler such that it can detect chords from system audio/streaming songs?

That depends on your DAW and system but if you have something like loopback you can send it to your DAW and have Scaler Audio on that channel. That’s really a setup process for your platform and DAW. Scaler just listens on an audio channel you pit it on. It depends on the input of that audio channel.