docs: function knParseSources(str)
  {
  	var pieces, i, rv;
  
  	pieces = str.split(',');
  	rv = [];
  
  	for (i = 0; i < pieces.length; i++) {
  		if (pieces[i].length === 0)
  			continue;
  
  		rv.push(knMakeSource(pieces[i]));
  	}
  
  	return (rv);
  }