All about T-Racks. The T-RackS demo is fully functional for a grace period of 10 days. After 10 days the demo will expire. After having installed the demo, when using T-RackS, always click CANCEL on the Authorization Wizard. This is because this Demo cannot be Authorized, and will emit a small noise, from time to time, once the 10-day trial period has expired. Sound cool? Download T-Racks.