The RWP link is just an older version of the tool, I should update it. I do support encoding to the VADPCM format...but the sound format of Zelda I do not support reencoding the banks, only N64Wavetables V1, V2, CtlTbls, and CtlTbls (Acclaim). I do not support EAD which is what Zelda is. I'd love for someone to take the source and add it though. Also sound Bank 0 inexplicably doesn't sound right.