.bnk to .sawnd?

[MaystheCraze]

I downloaded a .bnk file of Goku SFX for the Goku over Pit PSA, but the file is a .bnk file and not a .sawnd one. I use Gecko OS with the Replacement Soundbank Engine code and the newer one doesn't support .bnk files. So, is there a way to convert the .bnk to a .sawnd file so I can use it?