Someway to replace the brsar file?

[Race the Hedgehog]

Well, I use the Dolphin emulator, and the Gecko plugin. I need to replace the smashbros_sound.brsar, but apparently Gecko doesnt load then.
I already tried with WiiScrubber, but everytime show me the error message: "Unable to find free space! "

There's a way for me to replace the brsar file? There some kind of "Riivolution" for Dolphin?

Thanks for everyone. 

[Race the Hedgehog]

Bump.