What I got from you said, you want to increase the number of sounds in one thing (like, for example level_up1, level_up2 and so forth). If that, you will have to program a bit, changing parts of the game to allow more than one sound. I did that on musics on maps, but I didn't tried that out on level systems... It's possibloe, but I don't know how. I could check up that, but I deleted the game quite a while ago (depression reasons 'n' such, it doesn't matter...), so I'll have to wait almost an entire day to download the game and check that. Sorry...