MKV audio stream switching

[a2nXp4c]

I found it strange that I was able to switch audio streams on vobsub running windows media player 10 and only having english audio on vobsub when running bsplayer. I know that bsplayer has an internal switching function, but it's easier to select it from the vobsub tray menu. It's pissing me off, just because vobsub isn't consistent.