John and Austin,

Thanks so much for your replies.  I thought we had the answer, but it turns
out that we're closer but not yet there.

When I read your replies I thought:  "Of John and Austin's suggestions,
which is easiest to test out?"  So first I tried changing the song's name
from "Beautiful Day" to "Day."  No luck.  And I almost skipped over the
suggestion to try moving the music file since the first song, which has
always played, is in the same (admittedly buried) file.  But I decided to try
it and it worked.  Here's the problem:

Moving the .wav file to C:\temp definitely did something -- the second file
wouldn't play when it was in that buried file, and it did play when it was
located in C:\temp.  But when I deleted the .wav file from C:\temp to make
sure that the song was actually embedded, it wouldn't play.  In short, it
seems to have been linked instead of embedded.  Then I decided to see if the
same was true for the first song, and I removed it from the buried file where
it was located.  It turns out that file WAS embedded -- it still plays even
when the "source" file is removed.

Two more pieces of info:  First, I tried deleting both music files from the
presentation, moving the both files to C:\temp, and embedding them both from
there.  I still have the same problem -- the first song plays, the second
does not.  But here's the interesting thing -- something must be happening.  
Because when I started doing all of these things in response to your
suggestions, the presentation was "only" 134MB.  Now it is 176MB, and the
second song is almost 42MB.  So it almost looks like it IS now embbeded.

Any further suggestions?

Thanks again,
Neil

Another near success.

I studied the link you sent me and made adjustments to convert the
instructions from PPT 2003 to PPT 2007.  Since I had tried Method 2, I tried
Method 1.  Incredibly, it worked.  So I saved the file and ran through the
slide presentation a second time.  This time, the second slide once again
didn't play.

Any additional suggestions greatly appreciated!
Neil

Thanks for the quick reply.

In the version that I was working on yesterday, and about which I posted my
initial question, both songs say "Contained in Presentation."

Then today, in response to a reply from Austin Myers, I made a new version
of the presentation and tried inserting it as a transition sound.  And here's
where it gets really strange:  when I first did that, the second song played.
When I immediately went back to check it, it did not play.  I've tried it a
good number of times after that (closing PPT, rebooting my computer, etc.),
and on one occassion the second song again played, but the other times it did
not.  

Might the presentation just be too big?  It's 130MB.  But I'm running it on
a Dual Core processor with 2GB of RAM.

Thanks again,
Neil