I have an error where this import is not recognized, and am unable to get the speaker + mp3 working. I have the latest version of the ESP8266Audio library installed.
#include "AudioFileSourceSD_MMC.h"
fatal error: AudioFileSourceSD_MMC.h: No such file or directory
#include "AudioFileSourceSD_MMC.h"
It is possible that the files in your ESP8266Audio.zip library were not uploaded completely.
You are missing AudioFileSourceSD_MMC.h, which causes the error to be reported.
We suggest you delete the previously downloaded code and re-download the new code package package and unzip it.
Then reinstall the ESP8266Audio.zip library.
You use manual installation, installation tutorial steps to install: https://docs.sunfounder.com/projects/esp32-starter-kit/en/latest/arduino/arduino_start/add_libraries_ar.html#install-lib-man
After successful installation, go ahead and run the sample code to see how it works.