Harmy said:

I have a different problem though and that is that my BD player only shows ten audio tracks (and for some reason, it shows the 1st nine and the last one). I hope this is just the player's restriction for MKV and not some general BD format restriction. I can't remember if any of my commercial BDs has more than 10 language tracks, but the most I can recall is around 8. This could be why Encore won't import more than 8 tracks. I hope not.

EDIT: I just found a commercial BD that has over 12 audio tracks, so it should be fine.

Harmy, I have the same exact issue on my BD player, except it recognizes the first ten tracks, in order. I can't find any BD spec. that limits the number of tracks (not to say that it doesn't exist in some dark corner), so think that it probably is an MKV restriction within the player.