I had a look (listen) to the audio updates, and I can kind-of hear the voices, but no matter how much I manipulated the audio, I couldn't get a clean wave file. It might be encrypted on a serial number basis.

If I could sort out the file format, I could write some userland software so we could make our own.

Here's my suggestions for new sounds: http://nt4.com/custom_alp_samples_perhaps.mp3 (sorry< i was sampling a kids toy)