Using TS09, I have managed to have realistic sound inside of tunnels and bridges. Using "HP track bridgesound". But here comes TS12 and the track is not compatible so it does not show! First, if NV3 makes obsolete very nice assets, they should provide with a substitution. But this is not a perfect World, so, I went to the config of the HP track and copied the part that pertains to "tracksound" and pasted it to another track. It does not work (all this in 09 just to try). The modified track is not there after commiting and all that. So the question for any one that knows, is how to add these sound files to another track, so it can be used with the same nice sounds of the Hp track above.