ESP32-A2DP Bluetooth audio - how to transmit or what example from the library to use?

Projects Programming
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All I am trying to do is test out an ESP32 to transmit audio to a Bluetooth device, proof of concept.

I tried this example sketch: bt_music_sender_write

When plugged into my computer, the ESP32 can be seen and connected to. There is no audio, and when I remove the device from my computer and plug in the ESP32 to a wall outlet, the device displays again. So it is broadcasting Bluetooth.

I'm wondering if I should be using a different example. I tried pressing the enable and boot button. On other libraries I needed to do that in order for it to work. Any ideas on how to listen to the audio file?

Also, I needed to reduce the piano16bit.h file to 33333 lines of code for it to fit in memory.

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