this routing in your interface's control panel applet (it comes with the interface),the player or singer will be able to monitor the backing tracks and get his or her performance in sync without any time delay whatsoever
if your interface doesn't have zero-latency monitoring, you can accomplish the same thing if you gave an analog or digital hardware console. just connect the interface input to an aux, bus direct, or digital output on the mixer to avoid recording the entire temp mix into the new track. while there is some latency in digital mixer,it's kept very low (2 ms or less) thanks to operating that's specifically optimized for the task.