this website
http://the.wubmachine.com let's you put an mp3 in and choose if you want it remixed dubstep, electro, or drum & bass. Needless to say putting in jpop/kpop has mixed results (mostly horrifying ones lol) but this Last Angel worked only because it was a fan remix to begin with (the original song spit out nightmare music.)
http://soundcloud.com/handsomemrfoof...-machine-remix
Have at it and post your results~! FYI it might take a few refreshes since the server gets overloaded.