So incidentally, I have extracted the sounds from Gears 2, 3, and Judgement, but umodel isn't able to extract sounds from the first game. I can share what I have extracted with you, Micadi, but I'm hoping Gildor sees this and can help me out.
When using umodel to the Common Classes, everything gets extracted. When I unselect all classes and only have the Sound box checked, it get the following error:
assertion failed: H.Tag == PACKAGE_FILE_TAG
FCompressedChunkHeader<<:pos=2C <- appReadCompressedChunk <- FByteBulkData::SerializeDataChunk <- FByteBulkData::SerializeData <- FByteBulkData::Serialize <- USoundNodeWave::Serialize <- LoadObject:SoundNodeWave'10_2_CrashSite_CineLevel.BAIRD_EB_03B', pos=2C, ver=374/0, game=ue3 <- UObject::EndLoad <- LoadWholePackage:10_2_CrashSite_CineLevel <- CUmodelApp::ShowPackageUI <- Main:umodel_version=634
I have tried to have umodel figure out the package version on it's own and had overriden it to Unreal Engine 3 -> Gears of War, but they both produce this result.
And this occurs with pretty much all packages, it's not just limited to the 10_2_CrashSite_CineLevel.xxx.