If your file is not a wav (mp3?) you may use the free program Cdex to add a
riff wav header and it will then embed or some other prog to convert to wav
To make sure wavs always embed
Tools > options>general
Change the "link sounds with file size greater than" to 50000
If you want to send the mp3 as a link
Put the mp3 in a folder with the presentation > reinsert it and email the
folder
--
Try creating a new folder then save your presentation and song file into that
folder.
Reestablish your link to the song.
Right click on the folder, then Send to > Compressed (ZIP) folder
Attached this to your email