This must be done in addition to flashing the program
(using esp idf python)
python $ADF_PATH\esp-idf\components\esptool_py\esptool\esptool.py --chip esp32 --port COM3 --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 40m --flash_size detect 0x310000 .\flash_tones\src_files\audio_tone.bin
(file names must stay the same or code will need updating)
cd flash_tones
python $ADF_PATH\tools\audio_tone\mk_audio_tone.py -r src_files -f generated -F 0