Double Buffering:

  This function will cause the APlayer to load the next module in the list,
  while  the  current  module  still  plays. This will normally prevent the
  silence between two modules. If you don't check this one, you  will  save
  some  ram, but you will have to wait in silence for the next module to be
  loaded and started.

  See also  for more info on this.

  Default is OFF.