Question about Audio sound triggers

[Xermygames]

If you ever used the Titanium client (either to play on p1999 or other servers), you'd probably know and remember that mobs play a 'hurt' sound every single time they fully get hit, regardless from whom it receives the hit.

However, on the more recent used clients, such as SoF, Underfoot, RoF2 etc. , this audio trigger system has been changed to play a 'hurt' sound only when it receives a full hit from the main player / computer user / you only. The sound only triggers from your hit, and it doesn't triggers from the other players blows anymore.

I am trying to revert to this old sound trigger system from the Underfoot Client for exemple, to the Titanium's one. I am just being curious into modifying and fooling around with the clients, is all.

Does anyone who has more experience know how make something like this happen?