Arduino-RFID Teddy Bear

I set out several months ago to make a location-aware Teddy bear for the kindergarten-aged kids in my school. The bear is equipped is with an Arduino Uno, WAV shield, and RFID reader. It's modeled on a project I found on [login to view URL] ([login to view URL]). Simple enough; the teddy bear touches an object with an RFID tag and and plays an audio file that corresponds with the tag number. I soldered together the WAV shield no problem. I've tested both it and the RFID reader independently and both work fine; the reader reads tag numbers, the player plays WAV files. But I've been stymied by the Arduino sketch. The [login to view URL] project provided code, but it doesn't work for my particular RFID reader (Electronic Brick 125Khz). Sketches, as provided on the [login to view URL] page, are attached. I'm taking fixed-price bids for writing a sketch that will bring Charlie to life and teach my kids.