Sound issues with VBA GX

I am trying to play Mario and Luigi Superstar Saga. It seems like some of the sound effects do not register. Like when I am in a battle and jump on an enemy it doesn't make the noise. Any help is greatly appreciated.

A couple more examples are when Mario or Luigi levels up there is no noise when the counter is spinning for a level up. The coin sound is not correct. And the osound when entering a battle is not correct either.

Uh I've had problems with M&L too! I'm sure it's just a bug. It also happens on Contra Advance and is really annoying. >.>

Can this possibly be fixed with an update?

I got similar sound issues.
Some GBC games have some BG noise, too.