Comment by eichin

it's a little weird but most of the sub $50 ESP-32 boards on waveshare include an MP3 player as one of many demo bits of code (primarily because it shows off code for "read from microSD card" and "drive the DAC".) It's not quite what you're asking for, just a benchmark that it's kind of "too easy to build" which might get in the way of actual products.