I don't know. I've taken a selection of words from this thread, the comments in the extra file and the track names, threw in the words from the book the quote was from when I ran out of mutations. Currently running every word through ~150 mutations as well as verbatim. No luck as of yet.
There's one last file that hasn't been used from the DOD game.
https://mega.co.nz/#!nUkAVbAQ!f9iGWcW8gNOwKkCIYIfuvk1e7qy_1w7zXOShJVLMTK8
The file from that link is sped up, but it looks like the sampling rate was left at 8000 Hz. Every other file in the sound folder that I checked has a rate of 22050 Hz.
Instead of speeding it up, you can change the sampling rate to 22050 Hz on the original and get something of similar length and sound to the file above, but not exactly the same.
I'll post this here for comparison if anyone's interested:
https://mega.co.nz/#!XdBm0RoT!nuAfI4-2cI60hzjqTYY2N6u2GSTU-Xp7x1iU1iAzX_0
Much better than my hack job. Some sort of NES game soundtrack?