Use AudioTools as Output Library
Espressif is retiring the legacy I2S API: So with Arduino 3.0.0 my old I2S integration will not be available any more.
In order to support a unique output API which is version independent, it is recommended to install and use the AudioTools library.
The library, documentation and examples have been updated. To prevent issues in the new ESP32 release, I suggest that you start to use the new functionality.
Further information can be found here