count-in

Hello -

I'm just starting to use the save-as-WAV option to create accompaniment/backing tracks for my students, and am trying to find a way of adding or including a 1 or 2 bar count in. Does anybody have any ideas? I thought perhaps it might work to add a percussion line for the saving as WAV part, with a count-in, but it doesn't seem to incorporate that when I play the audio file.

Chris