Ubuntu blu-ray vlc location of libaacs.so.0

Probably in ~/.config/vlc (or perhaps just ~/.vlc).

Don't forget that your disc may have already revoked all of the keys you've got there, so it may not work even if everything is set up.

I put that file in /usr/lib/vlc and it worked for me.

I think the instructions might be slightly misleading though. I don't think that lib64 exists. I think it's lib and lib32.

Not on a 32-bit installation (obviously); but it will exist on a 64-bit install.

Hmm, I'm relatively certain that I have Mint 64 bit installed at home and I only found a lib and lib32 folder. I thought it might have worked similar to MS' Program Files directory where 32 bit programs are installed in Program Files (x86) and 64 bit programs. I know, I know, stop thinking like a Windows user... it was the only I could make sense of it.

Maybe I'm completely crazy though and accidentally installed 32 bit when I thought I was installing 64...

Neither ~/config/vlc nor /usr/lib/vlc seem to do the trick for me. I get the error:

No suitable decoder module:
VLC does not support the audio or video format "undf". Unfortunately there is no way for you to fix this.