With a little trick, you can make Zune
think of any file as an image file and hence can send it to other Zune player.

Before starting this hack, you need to put Zune USB Drive Hack into place. With this hack you can put any file into your Zune from your computer as your Zune is just any other USB drive hard disk.

You can just replace the extension on file on your computer to .jpg and sync it with your Zune
. Then send this file wirelessly to other Zune player from your Zune. Remember to include some more actual .jpg files with it. Then receiver zune can sync it up with PC and rename it back.

I know its not a great hack, but just if you want to tryl.