increments, but this can be set to any amount. Also implemented a counter for playing time, which can
pretty easily be used to determine the length of the file, in seconds, before playing it. The time
isn't displayed anywhere right now, but all this can be useful if this thing is turned into a codec, or
at least gets a nice UI.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15418 a1c6a512-1295-4272-9138-f99709370657
