Issues while flashing nrf5340 audio application

Hey,

So I was trying to flash the audio application on my nRF5340 audio dk. I built the program successfully using the buildprog tool provided.

The problem here is, I only have 1 development board. Is it possible to get the program working on just 1 DK?

If yes, How do I configure it to fetch audio from either BLE (connected to my phone) or LINE IN (connected to the audio jack) and then route it to the speakers connected to the Headphone OUT jack.

PS: These are the things happening after flashing the audio application

If I flash the gateway build, the RGB led in the center starts flashing green and so does LED3.

If I flash the headset build, the RGB led in the center starts flashing blue and so does LED3.

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