Hоw to switch audio streams?
1. To pull up the control panel using the player, move the focus using the remote control.
2. Press the Settings button in the lower left corner.
3. Choose Audio streams and select the required.
Note, that you can choose the soundtrack by default in the Settings section.
2. Choose System→Playback→Primary subtitle language→choose the language of the soundtrack.
If default soundtrack is not available for current video, then the video plays with the first available soundtrack.