TTSR1 Sound Track Sound Recorder And PlayerSound Track is an easy to use portable sound recorder which enables you to record your own sounds, bring back and replay automatically on your layout! It has 4 separate sound tracks, each of which can be replayed either by a controller command, touch of a button, or triggered by a Track Sensor when a Train reaches a particular place. So now you can have your favourite locomotives whistle played at the Whistle sign, or your own station announcement