How do I get a .nw applications images/audio out of package

So, I'm using the .nw export and all the audio, images and animations which are the biggest files get put into package.nw, but I do not want this.

I share my game via dropbox with friends so they have to download the whole package.nw every time, at 250MB it's not much for me but I have friends with slow internet connection and they have a hard time downloading it...

Notes: I have the music with correct filetypes and have read how to do it for html.

It's basically a zip file, you can make a patch that will just add/replace file in the original package using a cmd zip compressor.

I think I saw a plugin a while ago for handling zip files, try looking for it.