Thanks for the code.

Though I found it easier to use the cheap DF Player, using an SD-Card for the files. It is small, stereo and decodes mp3 and wav files. It also includes a power amp to drive speakers or line out to drive external speaker amplifier.

Using it is dead simple. Either locally by push buttons or serially by a MCU.

https://wiki.dfrobot.com/DFPlayer_Mi...R0299#target_3

And here for the cheaper sell https://www.banggood.com/Geekcreit-D...ientCountry=GR

Ioannis