To upload files to the standalone, go to the root game directory (where your EXE is), and just upload each folder, typing in the directory’s name relative to the game directory.
Here. I’ll give an example:
You open the html file, press ‘]’ to allow making changes to the files before actually starting the game.
Press ‘`’ to upload files, let’s say you’re uploading the music.
In the upload dialog, You would go to the place where the fallout exe is on your computer, then go to DATA/SOUND/MUSIC and then select all files in it and upload.
It will ask where you would upload it to, you would type DATA/SOUND/MUSIC.
Then, to actually save what you uploaded, you click ‘=‘