The piggs are a proprietary type squirreled away in the program. Sadly, I no longer have access to the backups I had of the thousands of sfx in the game. Check over in the Rosetta Stone Club, @The Philotic Knight may have the files themselves and his Rosetta Stone spreadsheet can help you locate their names/locations to set up replacements in the appropriate data folders. Because of the way the game triggers the sounds, it's not as simple as swapping places with the sfx, so you'll have a few hoops to jump through to get them to play in the manner that you like..
 
	 
 
	Good luck.  🙂