I know every programmer thinks his favorite language is the best tool for every situation, but damn this would be so easy to do on a nix system with bit of BASH scripting. Are you seriously COPYING and then deleting each track? My mind is blown.
In other news, I couldn't stand the limitations of the built-in mp3 player, including lack of ability to sort or choose tracks. After rooting and installing
mplayer + kinamp, I'm totally happy.