Blu-ray 3d remaster with audio change

[cinique]

Hi, please, can somebody help me?

Is there any solution for situation, where I have 1 blu-ray 2d and 1 same blu-ray but 3d version. But the 3d version is not in my wanted audio language although the 2d version is. So i wanna to get this one audio channel form the 2d version and add it to the 3d version and then in the best burn the remastered 3d version with my wanted audio to the disc.

I cant find any solution for this problem, so Im placing all my hopes into Your skills here.

thanks for Your response

(and excuse my english please)

[Baldrick]

Maybe bdfix. Extract the audio with clown_bd.

If you prefer free tools you can use clown_bd to extract audio and video from the blu-rays and then reauthor to a new blu-ray with multiavchd for example.

Rip first with anydvdhd or dvdfab.

[cinique]

Thanks a lot for Your very quick response

I extracted the audio from 2D with clown_bd - that was fine.
Then I remove the unwanted audios from 3D and added the one wanted audio in multiavchd.
But when I clicked Start, it sad me, that I dont have enough free space and required space is 347GB!
Is this normal? The Blu-ray disk is 50GB and the audio file is about 0,5 GB so I cant understand for what is required too much space. Sad to say I dont have so much space on my disk. Do You thing I did something wrong?

I only want to add the audio to 3D blu-ray disk. I dont want do anything with menus, I dont want to recoding the video. Only add the one audio. Isnt there some simple way to do this?

edit:
I forgot to say, that the 3D blu-ray disk I have extracted on my HDD yet. So I have the folder with the Blu-ray, and the AC3 audio file and I only want to take this folder and the audio file, put it to some software and give folder (or iso) with blu-ray disk with my added audio. Then I will be lucky.