Vista - Play song while viewing photo

My Vista multimedia machine is brand new. Still exploring. Stumbled upon -
and watched video on - Windows Movie Maker (WMM). I have a photo I inserted
on a Word document then added text at the bottom. I want the file to trigger
a song when the Word document is opened. WMM looks like the tool I need to
accomplish this task. I've never downloaded a song before. I think Rhapsody
is a reputable source with regard to assuring I'm legal and being protected
against malicious downloads (correct me if I'm wrong). The song will cost me
a buck and I assume the procedure is pretty straight forward. I want to tie
that song to the file. That's where Move Maker comes in I guess.

Will the party I send the resulting file to need to have Windows Movie Maker
to view the result? Any other tips you can provide would be appreciated.