Default audio track in mkv

How does Channels determine which audio track to play? I have mkv files that I used to create a virtual channel. Some have a commentary track that plays by default which I don’t want. Using mkvtoolnix, there is a default audio track flag that is set on the non-commentary track. Does channels use this flag to play the default audio track? Is there a way to force audio tracks in the mkv file besides setting the default flag?

I asked the developers why my device was randomly choosing the “second audio track” and they explained that when the first audio track is something like TrueHD that has to be decoded, they make Channels automatically select the format that can be passed through (like EAC3). I don’t really see why it should do that anymore now that they have a very good decoder and player with no transcoding. One of us should probably put in a feature request for a toggle to turn this off.

Yea that’s the same issue I’m having. The main audio track is flac and secondary with commentary is AC3 I think. I really would like it to choose the flac track. I guess I’ll have to go in with mkvtoolnix and remove all other audio tracks which is kind of annoying.