For other that may be interested in this, Audacity has an option to Generate a Click Track , which can be saved as a wave file and imported into n-Track as a new track. This is but just one method of creating a simple click track. Ideally, some find it easier to follow along with a simple drum rhythm that could be written via a multitude of midi sequencers, such as Fruity Loops . n-Track itself has a metronome built in that is quite capable once one familiarizes themselves with it's capabilities.
As has been mentioned before, one can find tons of info at the FASoft Forum and also at Audiominds.com .
Come by and check um out .... well worth the couple of clicks on the mouse.