you can change them yourself bro.sound folder is not in there anymore in K13.
3k folder > resource > sound
Just find an mp3 you dislike, take yours, rename exactly the same way as it is in the folder and replace. :)
I'm just glad that GM is not into justin bieber hehe. The michael jackson is ok for me but the log in sound is a bit weird.
Oh yeah ure right. I was on beta client folder lol. It's embed. Only gm can change it. For now only option turn the music off :lol: