I doudt very much if a stolen player would ever get as far as booting the thing and if it was stolen by someone that knew what it was and how it worked could probably get round it as i imagine it would be difficult to beat the upgrade process that would flush hijack.

I would bet that anytime a player gets stolen is because it is a cool looking CD PLAYER not a mp3 player.

You need to concentrate on not having it stolen in the first place