Hardware
Components:
Arduino compatible board with Xbee connector
http://blogs.iad.zhdk.ch/embodied-interaction/microcontroller/
Xbee
http://www.sparkfun.com/products/8665
IMU 9dof stick
http://www.sparkfun.com/products/10321
http://www.sparkfun.com/datasheets/Sensors/IMU/9DoF-Stick-v12.pdf
http://code.tinyclr.com/project/227/sparkfun-stick-imu-driver/
http://www.varesano.net/blog/fabio/initial-implementation-9-domdof-marg-imu-orientation-filter-adxl345-itg3200-and-hmc5843-a
Bluetooth headset PSI 1
http://www.amazon.co.uk/Conrad-bluetooth-headset-PSI-1/dp/B00284XCN8
Small active loudspeakers
http://www.amazon.de/Hama-00014479-Stereo-Mini-Lautsprecher/dp/B000JFWW8E/ref=sr_1_1?ie=UTF8&qid=1301396546&sr=1-1