This a little demostration of the project I am working rigth now.
I developed a Bluetooth Proximity Marketing Software that send content to Bluetooth deviceĀ on the coverage area, this is a J2SE application and runs over Ubuntu. I developed a J2ME application too that interact with this server, in this application you can select what content download to the mobile device. You can get any kind of content (mp3, video, J2ME applications, JPG, GIF, etc).
On the video you can watch an example of how the mobile application interacts with the server requesting different contents.

very cool…
Thanks man!! Coming soon more things cool