style fixes for audioplayer and audiorecorder classes * @audioplayer/__get_properties__.m, @audioplayer/audioplayer.m, @audioplayer/display.m, @audioplayer/get.m, @audioplayer/isplaying.m, @audioplayer/pause.m, @audioplayer/play.m, @audioplayer/playblocking.m, @audioplayer/resume.m, @audioplayer/set.m, @audioplayer/stop.m, @audioplayer/subsasgn.m, @audioplayer/subsref.m, @audiorecorder/__get_properties__.m, @audiorecorder/audiorecorder.m, @audiorecorder/display.m, @audiorecorder/get.m, @audiorecorder/getaudiodata.m, @audiorecorder/getplayer.m, @audiorecorder/isrecording.m, @audiorecorder/pause.m, @audiorecorder/play.m, @audiorecorder/record.m, @audiorecorder/recordblocking.m, @audiorecorder/resume.m, @audiorecorder/set.m, @audiorecorder/stop.m, @audiorecorder/subsasgn.m, @audiorecorder/subsref.m: Style fixes. Do more basic argument checking. Use consistent style for error messages.

--- a/scripts/audio/@audiorecorder/getplayer.m	Fri Jan 02 16:54:34 2015 -0500
+++ b/scripts/audio/@audiorecorder/getplayer.m	Fri Jan 02 17:23:38 2015 -0500
@@ -23,11 +23,14 @@
 ## @end deftypefn
 
 function player = getplayer (varargin)
+
   if (nargin < 1 || nargin > 2)
     print_usage ();
   endif
+
   recorder = varargin{1};
   data = getaudiodata (recorder);
   player = audioplayer (data, get (recorder, "SampleRate"),
                         get (recorder, "BitsPerSample"));
+
 endfunction