We are looking to find an inexpensive way to play an MP3's. We found this Maker article.
We can buy a cheap MP3 player off Ebay but we are wondering if you have to connect the wires into the analog Pins in order for this to work or if we can use the digital pins instead.
We have 4 Potentiometers occupying the analog pins which only leaves two pins left and we need 3 from the Maker article above.
This is the other route but seems more expensive.