if you get to a point where you begin to add tracks and you can add no more but you need a few more - you must go into the AUDIO >AUDIO HARDWARE AND DRIVERS> and go the Audio driver that you have chosen -
For each driver, there is a section, right underneath VOLUME SMOOTHING - that says MAX NUMBER OF TRACKS - this is where you adjust the program to give you more track count ( as long as you have the CPU strength and RAM to pull the horses....)