You will need the following hardware for this project:
- Arduino Yun
- MicroSD card with at least about 20 megabytes of space available.
- USB audio adapter or USB speakers.
- If using USB speakers, make sure both the audio and power are transferred over USB. Some USB speakers only send power over USB and audio over a 3.5mm jack--these won't work with the Yun! I had good results with this small laptop soundbar in my project.