I've had this addon installed and I didn't test it before but I just tried recently, and when I did I had noticed that the antlion made the sounds, however it was the default antion model, Isn't this supposed to replace the models as well? I have no addons that replace or retexture / reskin any of the antlion models in my game. (Edit : I have also noticed that some others are having the same exact problem, so I do hope that this does get fixed soon.)