I am sure I just simply messed something up. I am not incredibly knowledgable about this software. I have created a few different songs and all of a sudden none of them will play.  I load an arrangement and it all comes up, but no sound is coming from the software.  The volume on my computer, the software, each element of music, and all of that is on and my computer is working fine.  This has not happened for the long while that I have owned this software until all of a sudden.  Please help?