To BeLooken, the answer of how to resolve your "problem" is indeed very simple. Also, please be aware that many members get irratated if someone posts essentially the same question on two different threads. Not only is it against the forum rules, but a member feels that their efforts to help are in vain if other postings are being made on a same subject/same poster threads that they were not even aware of.
Choosing tracks will be soon be intuative to you also after a short learning curve. For people who choose to remove certain soundtracks (not me, I keep all tracks), you gotta learn how to distinguish ... and BeLooken's method is the correct one. Because if all the soundtracks of a movie are 2-channel tracks, and none are 6-channel tracks, how are you gonna be able to choose without listening to them?
Maybe this post I made on another forum will help you better visualize a solution to the audio-track selection problems you are having.