Oh skiib, you continue to act as if you registered on the forum this morning

Personally, I think that your problem is directly related to the device, i.e. its launcher.
Maybe, if you transferred the package from one device to another device, there is some conflict
Delete save folder (backup it if you have anything saved) configure software again, try again...

Otherwise navigation audio stream is mentioned so many times in different topics sound (voice/audio) related.
The information that you don't have it written in your sys file tells me that you are not using a good sys file, because the complete one is always included with the pongo skin

Quick search, [Only registered and activated users can see links. ] for example