I've had the DCS TIU and the DCS Loader software for a while now, and I've managed to successfully change sounds on my MTH PS2 Amtrak Genesis #180 locomotive with another PS2 Genesis which had different sounds. However, when I tried swapping my MTH PS3 RailKing NS ES44AC #8110 with the PS3 RailKing SD70ACe, it corrupted the sounds on my ES44AC, so I had to revert.
Is there another way to do this? I don't like the horn sound on the ES44AC, it sounds like a rock guitar, while the SD70ACe horn sounds smooth and relaxing. I need to do this as soon as possible, because there's a train show in Redford, Michigan and my club is going to be displaying (and so am I) and I really want a better horn!