In this project I use BitVoicer's speech recognition features (http://www.bitsophia.com/BitVoicer.aspx), one Arduino board and one electret microphone (https://www.sparkfun.com/products/9964) to control a few LEDs.
This project is similar to the one in my first post (http://arduino.cc/forum/index.php/topic,133051.0.html), but now I use audio streaming to send audio to BitVoicer.
The following fritzing schematic shows how I wired my Arduino board: