I am using Finale 2008 on Windows Vista.  The playback was working fine two nights ago.  Yesterday morning -- nothing!  I made absolutely NO changes.  The system arbitrarily decided to stop allowing playback. ???  I reloaded the driver - nothing.  I shut down 2008 and reopened ---- nothing.  No programs were added or deleted.  Is there a way to get back to default settings? Why or how did this happen?