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
this was also interesting as the kaboom sound file has been messed with as well, so apart from the QR sound files at the end one other file was messed with, did it contain a QR file as well? i got the impression it didn't or wasn't checked, so then there's obviously a reason why it's been messed with