let there be sound!

https://learn.adafruit.com/introducing-the-raspberry-pi-zero/audio-outputs - either the simple variant with few resistors or the raspberry-B+ version with buffer-IC

an I2S-DAC like variant is most likely overkill.. like the

https://shop.pimoroni.com/products/phat-dac ( https://www.adafruit.com/product/3016 IC=PCM5102A )

or similar https://polyvection.com/shop/plaindac/ (IC=PCM5142)