With the ESP32-P4 not having any wireless functionality and instead focusing on being a small SoC, it makes sense to combine it with a second chip that handles features like WiFi and Bluetooth.
If you use the playFromMP3Folder() or playAdvertisement() functions, the files to be played must be organised in an extremely precise manner. The "MP3 Folder" must be in the root of the storage device ...
Currently your Arduino can only beep like a microwave oven. Mozzi brings your Arduino to life by allowing it to produce much more complex and interesting growls, sweeps and chorusing atmospherics.