Folklore .SGD_

[OS-PRIME]

Since i finally figured out how to deal with another problem, i have something else i need some help with. Folklore's .SGD_ files are listed under sound along with a corresponding number relating to that folk. There a sound i want to rip from a certain folk but i do not understand the format. Something i noticed about the .SDG_ files is that when looking through them with notepad+ i found a string of text that said MYPACK 1.13. Any suggestions about cracking the files? I've provided a link to them.
https://www.dropbox.com/s/oqmegtdt10r2st0/SGD_.zip?dl=0