Hi,
I'm thinking of buying the 'Adafruit "Music Maker" MP3 Shield for Arduino w/3W Stereo Amp - v1.0' from Adafruit : Adafruit Music Maker MP3 Shield for Arduino w/3W Stereo Amp [v1.0] : ID 1788 : $34.95 : Adafruit Industries, Unique & fun DIY electronics and kits and was wondering how you program it.