Replacing audio in QT movie doesn't change overall size of movie?

H-264 movie made for web distribution. My best video compressor only creates AIF audio files ... which are mighty big.
I made an MP3 audio file in Logic.
I replaced the original AIF audio in the Quicktime movie with the MP3 audio ... (which is 23 megs smaller) but 'info' says the QT movie is still the same size.
How can I replace audio track in QT movie (with a smaller size audio track ... and see the difference registered in the QT movie 'info'?
All ears,
Ben

Open your audio/video QuickTime file and then open the the Movie Properties window.
Highlight (single click) on the "Video" track and "Extract" (upper left of that window) to make a new video only version.
Open your audio QuickTime file, select all (Command-A) and copy (Command-C). This stores your audio track on the Clipboard.
Switch back to your "extracted" video track, select all (Command-A) and choose "Add to Selection & Scale" (Edit menu).
Test this file and then "Save As" to make a self contained QuickTime .mov file from these parts.

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Using the code below, and clicking "Rotate" button demonstrates this. System.out.println() shows that the sizes have changed internally, but visibly, they do not change. (also nothing shows up at all until the first time "Rotate" is clicked. That, the wrongly clipped border, and the messed up rotation clipping and text placement are separate issues.)
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import javax.swing.*;
import javax.swing.text.*;
import javax.swing.border.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
public class Rotate extends JPanel {
    private TextPanel textPane;
    private JLayeredPane parent;
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        setLayout(new BoxLayout(this, BoxLayout.PAGE_AXIS));
        JToolBar toolBar = buildToolbar();
        add(toolBar);
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            System.err.println("Couldn't insert initial text into text pane.");
        Border myBorder = BorderFactory.createLineBorder( Color.red );
        textPane.setBorder(myBorder);
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        parent.add(textPane);
        textPane.setDefaultBounds(120, 120, 240, 120);
    private JToolBar buildToolbar() {
        JToolBar toolBar = new JToolBar();
        toolBar.setRollover( true );
        toolBar.setFloatable( false );
        JButton rotateButton = new JButton("Rotate");
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        //Make sure we have nice window decorations.
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        //Create and set up the content pane.
        JComponent newContentPane = new Rotate();
        newContentPane.setOpaque(true); //content panes must be opaque
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        //creating and showing this application's GUI.
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            public void run() {
                createAndShowGUI();
class TextPanel extends JTextPane {
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    private int tx, ty;
    private int wide, high;
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    //          1 = rotation 90 degree clockwise
    //          2 = rotation 180 degrees
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        tx = 0;
        ty = 0;
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            setSize(high,wide);
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I spent a few mintues playing with it. I tore up some of the code but I think it works better. It will still need some tweaking:
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextPane;
import javax.swing.JToolBar;
import javax.swing.text.BadLocationException;
import javax.swing.text.StyledDocument;
public class Rotate2 extends JPanel{
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        textPane.setPreferredSize(new Dimension(100, 100));
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        JToolBar toolBar = new JToolBar();
        toolBar.setRollover( true );
        toolBar.setFloatable( false );
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        rotateButton.setToolTipText( "Rotate text editing pane" );
        rotateButton.addActionListener( new ActionListener() {
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// Discoverer Desktop 10.1.2.1
// Discoverer Desktop Client 10.1.2.48.18
// EUL Library 10.1.2.48.18
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Take each of these steps that you haven't already tried. Stop when the problem is resolved.
To restart an unresponsive computer, press and hold the power button for a few seconds until the power shuts off, then release, wait a few more seconds, and press it again briefly.
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If the startup process stops at a blank gray screen with no Apple logo or spinning "daisy wheel," then the startup volume may be full. If you had previously seen warnings of low disk space, this is almost certainly the case. You might be able to start up in safe mode even though you can't start up normally. Otherwise, start up from an external drive, or else use the technique in Step 1b, 1c, or 1d to mount the internal drive and delete some files. According to Apple documentation, you need at least 9 GB of available space on the startup volume (as shown in the Finder Info window) for normal operation.
Step 3
Sometimes a startup failure can be resolved by resetting the NVRAM.
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If a desktop Mac hangs at a plain gray screen with a movable cursor, the keyboard may not be recognized. Press and hold the button on the side of an Apple wireless keyboard to make it discoverable. If need be, replace or recharge the batteries. If you're using a USB keyboard connected to a hub, connect it to a built-in port.
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Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to start up, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can start up now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
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When you start up in safe mode, it's normal to see a dark gray progress bar on a light gray background. If the progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, the startup volume is corrupt and the drive is probably malfunctioning. In that case, go to Step 11. If you ever have another problem with the drive, replace it immediately.
If you can start and log in in safe mode, empty the Trash, and then open the Finder Info window on the startup volume ("Macintosh HD," unless you gave it a different name.) Check that you have at least 9 GB of available space, as shown in the window. If you don't, copy as many files as necessary to another volume (not another folder on the same volume) and delete the originals. Deletion isn't complete until you empty the Trash again. Do this until the available space is more than 9 GB. Then restart as usual (i.e., not in safe mode.)
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Launch Disk Utility in Recovery mode (see Step 1.) Select the startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
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Step 12
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Replacing audio in QT movie doesn't change overall size of movie?

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