No audio on new screen recording

Question

I am trying to save Apple's iPod tutorial (http://www.apple.com/support/ipod/tutorials/) on my mac.  I have succeeded in capturing the video portion of the tutorial, but there is no audio.
In Quicktime, I select File>New Screen Recording.  This gives a Screen Recording screen where I select for Microphone: Built-in Input: Line In; also I select audio play through volume to full.  In Safari, I start the tutorial web video and then in QT hit the record button and then select Start Recording.  When the web video is finished I hit in QT stop recording in the menu bar.  The video is saved in my mac Movie folder.  I double-click the saved video and it opens in QT.  I hit the QT Play button and the video starts playing but there is no audio.  What is wrong?  I'd appreciate any help.
Owen

Answer 1

This URL can be found in the source code for the web page you referenced above, in the "Activity" window after you select the clip you want
I did this and found the URL given in your EXAMPLE DEFAULT.
This was two separate options:
1) You can open the "View Source" window under the View menu and search the web page source code for all video links (both Guided Tours and TV Ads).
2) The Activity window only loads the reference URL after you select a clip for viewing but you seem to have a handle on this already.
or in the Finder "Info" window for the non-playing downloadable reference file.
It is not clear to me how to do this
If you copy the reference link in the Safari Activity window and paste it to the Safari "Download" window, the file it downloads from this web page will not open directly in the QT Player app. (I.e., you get a "Can't open this file" modal message.) However, if you highlight the MOV icon and open the Finder "Info" window, you can still get the full URL reference that will open in the QT Player "Open URL/Location" File menu option.
NOTE: In many cases the file downloaded directly by the Download window is a normal standalone or reference file which can be opened in the QT Player. Unfortunately, that is not the case for the page you gave.
Use the "Control-Click" shortcut to open the context menu and select the "Copy Link" option for the example default tour link above
I started playing the movie and did a control click but don't get a Copy Link option.  Can't I just copy and paste the URL address from the movie window?
Was referring to the "Example" link I posted in my last comment. If you "Control-Click" this link, the "Context" menu contains both "Copy Link" and "Download Linked File" options. The "Copy Link" option is handy for copying the associated link to your system's "Clipboard." If you then open the QT Player app, select the "Open Location/URL" option, you can then use the "Command-V" shortcut to paste the copied link to the QT player for opening. (You can also paste the URL to Safari to open the file via the default plug-in.)
NOTE: On some web sites you can simply "Control-Click" the movie, a poster image, or text link and use the "Download Linked File" option to download a movie file directly. Unfortunely, the ability to do this depends on how the page is coded/resources are located so don't be surprised if you end up with something other than you wanted or expected.
Since I am running OS 10.6.7, if I understand you, I don't need to purchase QT7 Pro to do this.
I assume you can. I can do it under OS 10.6.8 Snow Leopard which allows me to copy the data to a new MOV file container without recompressing the data.