MP3 Player library testing

Creating a library for mp3-player, until now tested in Rich UNO R3 with QJ008-16S chip. (Biomaker KIT)
Repeatedly repeated because the pulses greatly interfere with the sound.
I think it will be finished soon.

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This looks promising. Does it work with this device?

They are similar, but I’m not sure. I have that hardware but for now I don’t have much time.