Since the Men of War times, sounds in vanilla game were packed as .wav.
For instance, all current weapon sounds are saved in this format.
I was wondering what else formats can game use? Need that reduce overall size of a mod, as .wav sounds are practically uncompressed and thus they add pretty much weight to any large scale mods (for instance, OGG sound is 2,5 times smaller than similar WAV without any quality loss; and specialized formats like .fsb can compress sound even more effective).

I was trying to convert files from .WAV to .OGG, but ogg don't seem to work in both MOW and CTA. One fellow found out that MOW can use mp3 format, but mp3 isn't really a cool option.

Any other thoughts?