ois- Era has them built in to ganis (last time I worked there...), if you open the gani and look right near the bottom you'll see a
HTML Code:
ANI
[WEIRD STUFF HERE]
PLAYSOUND sound.wav
[WEIRD STUFF HERE]
Try deleting that line? =o (PLAYSOUND)
An alternative would be to find an empty sound file and to replace the Era effects... :[