Is it legal to use these SFX in Kongregate? Kongregate.com never charges anyone to play a game, all they do is allow for the creator of a game to make a maximum of 50% revenue.
P.S.I thought I already made one like this, but I never found the forum I posted it up for, because it says I never made any posts. Oh well.
Commercial use is allowed, with the exception of advertising. So as long as your game is not an advertisement and you credit properly, it should be fine.