* Copy the file /libraries/SimpleSDAudio/examples/example.raw to root folder of a freshly formated SD card (don't use quick format!)
* Connect SD card to your Arduino board (using shield or whatever, SD card's chip select should go to pin 4, all other to SPI pins)
* Connect a speaker, or headphone or line-in via 100 ohm resistor in series to audio output pin (pin 9 on Arduinos with ATmega168/328, pin 44 on Arduinos with ATmega1280/2560). Connect other end of speaker/ground of line-in to GND.
* Launch Arduino IDE and try example "BareMinimumWithDebug" first
* You should hear some audio. Activate serial monitor to find some information if it does not work. Maybe you have to adjust SD cards CS pin in sketch.