Sure

Gecko doesn't support sounds.
It won't work no matter what you do with Gecko.

Actually, if you use a Phantom Wings' v.4 code, it works, however, you have to edit the code yourself to fit your wii and your hacks, and while it's hard to get the coded part down, once you're done, just putting sounds in the folder and loading EVERYTHING in Gecko is (in my opinion) much easier.