Unit Speech

How to you change or customize unit speeches?
Like when you click on them, they'll say something and when you click on them too much, they'll get annoyed.

You can edit the soundset in the Object Editor under Sound, that allows you to choose which pre-existing sound set you want to use. However, if you want to make new sounds, I think you have to import them to override old sound files... for example, import and override all Lord Garithos sounds with something else. Just change the pathfile of the imported file to match that of the sound you want to replace. I'm not sure if there's any way to import custom sounds/soundsets wtihout overriding the pre-existing ones.