My bad sorry. If you used my bin file and just changed the lines to get your paint to show up I used some modified sounds for my locomotive. 3/4 of the way down there is a EngineSound entry.
Says:
<ChildName d:type="cDeltaString">EngineSound</ChildName>
<BlueprintID>
<iBlueprintLibrary-cAbsoluteBlueprintID>
<BlueprintSetID>
<iBlueprintLibrary-cBlueprintSetID>
<Provider d:type="cDeltaString">RSC</Provider>
<Product d:type="cDeltaString">SD70Pack01</Product>
</iBlueprintLibrary-cBlueprintSetID>
</BlueprintSetID>
<BlueprintID d:type="cDeltaString">Audio\RailVehicles\Diesel\SD70ACe\70a-Helper Engine Sound.xml</BlueprintID>
Needs to say:
<ChildName d:type="cDeltaString">EngineSound</ChildName>
<BlueprintID>
<iBlueprintLibrary-cAbsoluteBlueprintID>
<BlueprintSetID>
<iBlueprintLibrary-cBlueprintSetID>
<Provider d:type="cDeltaString">RSC</Provider>
<Product d:type="cDeltaString">ShermanHill</Product>
</iBlueprintLibrary-cBlueprintSetID>
</BlueprintSetID>
<BlueprintID d:type="cDeltaString">Audio\RailVehicles\Diesel\SD70M\Engine\SD70MEngineSound.xml</BlueprintID>
The only things you need to change are under product type should be ShermanHill and under Audio change it to SD70M\Engine/SD70MEngineSound.xml.
It should work then.
