Yes, but it takes some trickery to make it all work. I'm going to assume
that you are running Windows XP, can you open Sound Recorder, select file |
save as and select the change button. In the format dropdown, do you have a
choice of MPEG-3 Layer? (Yes, files needed be re-encoded by the sound
recorder. Which may mean taking a MP3 and converting to a wave and then
encoding the wave back to a wave/mp3 using sound recorder.)
Once you have a wave file encoded in MP3 format, you can use the same
methods to attach the background sound by enabling Word as your e-mail
editor and creating an HTML message. Right click on a toolbar/menu in a new
message and select Web Tools. Put cursor in body and select the speaker
icon to insert the wave.
One special note: the recipients must also have a codec loaded to
understand how to play a wave file that has been encoded MP3 format. (e.g.
Windows NT/2000 would have to have use a 3rd party codec to hear the file)