Let the hive mind of Engadget get that for you.
"For a long time I have been searching for a portable device where I can store all of my CDs in MP3 format and stream the songs wirelessly to my HiFi system. The portable device must I've tried FM transmitters, they all suck. I don't want a docking station. Any help? Thanks!" have a display so that I easily can scroll through the playlists (I don't want to use a TV or monitor). I suppose that there must also be a second device that is connected to the HiFi system that would receive the wireless streams from the portable device.
Also, this software is dependent on the thief or whoever ends up with it connecting to the internet. It will probably happen, but until they connect you get nothing.
I haven't done research into this, but why don't they just come up with some sort of device that isn't software that, when stolen you can just report it and it gives the location or something. We can make GPS the size of a flash drive, why can't we put one in our laptops?