[8FS_Bulau]

Well, all I can say is that's what that thread is saying. Keep in mind, that Mod Activator in step 2 is for people who want to install MODS, but don't want the new sounds. I only listed it because you said you installed Mod Activator in the first place. If you also want the new sounds, then you should install an Eng_Sound_Mod in step 2, see here: (The link is inoperative), instead of Mod Activator.

Personally, I did not go that route. I did what cnopicilin did, and installed the Unified Installer 1.1 over my patched 4.08m. The Unified Installer gives you new sounds, plus 4.09 Mod b1m, plus a switcher, and a poop-load of new planes.