Here are a couple of fun upgrades for the layout. They both sound great, but the best part is they will never become obsolete nor require a software update. The bell was originally a foot operated device on a Cleveland Railway streetcar, and was cleaned up, repainted and mounted to some wood to function similarly to its original configuration. The bellows whistle is a design I had originally run across on YouTube, and mine is a slight variation on that pattern. It has been tuned a bit lower, more like an N&W hooter or a tugboat. Here are a couple of very short clips where you can listen to their respective sounds.