MKR ZERO has an on-board SD connector with dedicated SPI interfaces (SPI1) that allows you to play with MUSIC files with no extra hardware!
Watch out music makers, we’ve got some news for you! We have released two libraries for your enjoyment:
Arduino Sound library – a simple way to play and analyze audio data using Arduino on SAM D21-based boards.
I2S library – to use the I2S protocol on SAMD21-based boards. For those who don’t know, I2S (Inter-IC Sound) is an electrical serial bus interface standard for connecting digital audio devices.