Okay, I'll try to help...
For future reference, try to be as specific and detailed about the problem as possible - this will make sure you get the best help in the quickest way:
1) Title the thread as simply as possible according to the movie "Titanic - Norway box set" - that way, anyone who has the movie Titanic and possibly anyone who has that version in particular will be more likely to read your thread.
2) Yes this could be a generic problem (how to skip commentary tracks) but it's muich better to treat it as a specific problem because a specific problem is a lot easier to solve than a general problem. So describe the issue specifically and if at all possible, give a screenshot.
Onto the problem...
Make sure you are in "Expert mode" (Preferences -> General). It's been so long I forget what you get and don't get if you're not using Expert mode. It's not as scary as it sounds.
I don't know if your set is anything like the North America set, but the North America set has Blu-ray #1 with Movie + Special Features, Blu-ray #2 is Special Features, DVD #1 is Movie Part 1, and DVD #2 is Movie Part 2.
The back of the case lists the Blu-ray feature film audio as:
- English 5.1 DTS-HD audio
- English 2.0 Dolby Digital
- English Audio Description (unspecified format)
- Some other languages
- THREE commentary tracks that will be English (unspecified format)
Now armed with this information, I compare that to what MakeMKV shows me, and the answer is clear:
- The DTS-HD track is first and that's the main high quality audio I want
- The second track is 2.0 (DD Stereo), this is also a main audio track but I don't want it
- The next English track is a 5.1 track, that's going to be the Audio Description (Audio Description is often 5.1) and I definitely don't need that
- Lastly the three commentaries follow, they're all DD Stereo
Now maybe your disc isn't as easy to "solve" as this one is, but I hope this might help you figure it out!