I actually found some sound modules on Amazon and saw the recommendation about just recording the pke sound from the video game, looping it and saving that as an mp3 file. Going to try that.
The PKE in Spirits Unleashed (the new video game) has movie-accurate sounds. I bet those sound files could be extracted from the PC version.
Finally at the point of building. @Holydohnut, is there any chance of you sharing your code?