Point-of-Interest Sound File

I am not sure either Mappoint or Street Trip can allow me to do the followings. I try to use a GPS with PDA and create some point-of-interest locations. With this device when I move close to these locations, it will play a sound file or video file. Please advise how can I do that.

Hi,

I dont think you can. However if you make your own program using mappoint ActiveX then you can of course.