Recommended 路 for beginners
How to Play audio with Arduino
Why people recommend it
A tutorial on making an Arduino play audio and speech through a small speaker, offered as proof it works and a simple route to trying it.
Watch for: One member drives the speaker through a transistor; another wires it directly
In their words
I then used an executable from this tutorial to extract the data from an MP3.
luek baja on electronics.stackexchange.com, Mar 2023. CC BY-SA.