The new sounds for the Rapid Transit Talent-2 lacks running sound. So when you're coasting at 160kmh and stopped at a station, there's zero difference. The only sounds you can hear are the motor sounds and the air conditioning.
If this was in beta testing then i don't know why not a single tester would complain about this. The update is some hours out and costumers like you and me spot this at first. Maybe it's better not let the trainee do the audio mix but only a person who knows what it has to sound like. In-cab sound are always to quiet in TSW2. Since TSW 2 i drive every train with windows open (if possible) to better hear the motor, rolling wheels etc. and have a sense to drive a train.