An utility written in java by DevilMarkus : Cdt2Wav
-DevilMarkus has written a new utility in java : Cdt2Wav, so you can use it on Windows, Linux and Mac.
For Linux and Mac users, launch the cdt2wav.jar with the following parameters : cdt2wav.jar -Xms512m -Xmx512m -XX:MaxPermSize=512m (or set all to 256 if you want only 256 Mb max. ram usage).