Class 375 has no sounds.

[NYTriStateEngineer]

Hey everyone!

I recently installed the Class 375/377 so I could download 9of13's NEC Commuter Reskin pack. While I have enjoyed NJ Transit trains being on the NEC (since DTG has yet to make it, which I don't understand why, seeing as how NJT doesn't really charge for licensing AFAIK), there's just one issue for me. The Class 375 that he repainted for NJT and SEPTA doesn't make any noise. No traction motors, horn. The only sounds you hear are the trucks along the tracks and that's it. I know it's not an issue with his pack because the DB101 he reskinned works perfectly. Is there anything I can do to fix it.