maybe... the creator removed it (the link)... it is because he no longer wants (and it is his wish) that it be published....
(or maybe the link fell)... is it possible to "upload" something like that to simviation? (if someone can do it)
...a good samaritan offers us the PMSOUNDS program (from Project Magenta)
pmsound offers GPWS for ALL aircraft...
you just need to have the pmsounds program open while you fly... and the gpws will work (you can also change the audios for better ones).
the link is in the comments of the video
https://www.youtube.com/watch?v=Ntlk49F8OUE
(NEED FSUIPC for work!!!!)
I repeat...the link is in the comments...not in the description of the video