Way old.... but, in case you haven't figured it out.
Have you tried installing a USB midi interface & using it to sync with GuitarTracks?
I would think it should work unless GuitarTracks is a closed system & doesn't allow you to use other midi devices.
I ain't nobody. I come in here to train my ears, to learn what I'm hearing and see how that relates to what others are hearing. There is a very good possibility I don't know what I'm talking about.