I downloaded lazysod's mono audio track from here (link deleted) I bought a copy of the remastered Terminator bluray, I got myself a bluray burner and a stack of 50GB BDR-DL, I spent a few hours ripping and reading tutorials, and all I got was a lovely coaster.

What I want, is to add the mono track to the commercially released bluray. That's it, nothing else. No new colors, zero compression, the full 30ish GB video but with the mono mix. If anyone can help me with this I'd be eternally grateful. Thus far multiavchd spat out a disk that showed the fox home video logos, and indeed can play back the special features and show the pop up menu, but not the feature presentation. Adding a single audio file shouldn't be this complicated.