PLAYACTIV () -> lSampleIsActiv

   PlayActiv() checks if you are already playing a .VOC-File


   PARAMETER:
   none

   RETURN VALUES:
                TRUE  Yes, something's being played, hear it ?
                FALSE Nope, nothing's being played at this time


   EXAMPLE:

               DO WHILE PlayActive()
                .
                .
                .
               ENDDO

               QUIT