Test 1) Test that instance.loadMovieNum method loads sound SWF into level 1
loadMovieNum - Load sfx in level 1
Test 2) Test that LoadMovie method loads sound SWF into level 1
LoadMovie - Load sfx2 in level 1
Test 3) Use loadMovieNum method to stop playback by loading a silent sound into level 1 while another sound plays.
loadMovieNum - Load silent sound in level 1 (stop by playing silent sound)
Test 4) Test that loadMovieNum can load SWF into level 0.
Load sfx1 into level 0 (IE will not reload same SWF into level 0, so sound will only play once for windows IE browser)