You can convert ANY picture on your comuter to background wallpaper on Vista, XP.... any windows OS for that matter. For Vista, right click on an open area of your desktop... choose PERSONALIZE and follow instructions. Download and save any picture you find on the net, from email, dig camera, whatever..... to a file of your choice... use the desktop "properties" or "personalize" feature to install your own background.
Here's my current background.... taken at Indian Rocks Beach, Fla... 2003.
That said... the windows 7 stuff has sound embedded... and I've never tried that on the background function. That's more of a SCREENSAVER deal... W7 apparently has a prog to run that... you probably need another 2 gig memory to handle it on Vista or XP.. heh, heh.