Ignoring Sound Objects Per Language
First of all, let's make sure that the "Use reference language as stand-in" box is not checked in the Language Manager window (Shift-J). This will prevent you from having the sound play English files (if English is the reference language) when the sound engine doesn't find the right file in the non-English language.
Let's look at the voice sounds contained within one of your random containers. If you double-click such a voice object in Wwise, the Contents Editor window will list the files used for each language.
Uncheck the "PF" box next to the languages that don't have an assigned WAV file. If you then change the active language to one of these languages, you will notice in the Project Explorer that the voice object has been grayed out, indicating that it will not be used on that platform (the object will also appear grayed out in the parent random container's list).
Using this approach, you are in fact hiding precise language-specific sound objects, per platform. Please note that you have to do this on each platform.
