The project it’s based on a nice little 3-axis accelerometer from STMicroelectronics with a SPI bus, which makes it handy for interfacing in microcontroller style applications. This device could be interfaced with an AVR, but the author chose to interface it with the Arduino, since it’s pretty easy to get up and running in that environment.
LIS3LV02DQ Triple Axis Accelerometer: [Link]
Remember when i told you a few words about a new revolutionary USB Module named VMUSIC2 ? The VMUSIC2 is a complete MP3 player module from FTDI, Inc. which makes it easy to integrate MP3 functionality in to your next microcontroller project. It has two interfaces: SPI or UART (serial)
This instructable will cover getting connected and controlling your VMUSIC2 module from hyperterminal. I recommend starting out this way because it will allow you to get familiar with the commands and get a feel for how it works before connecting it to your microcontroller. I will follow up with another instructable on controlling it from a microcontroller.
Getting started with VMUSIC2: [Link]