We read every piece of feedback, and take your input very seriously.
To see all available qualifiers, see our documentation.
See issue #10.
Looks like there is no API to set it on a ListItem, have to set them on a playing video. The YouTube addon does it here (see addSubtitles):
http://code.google.com/p/youtubexbmc/source/browse/trunk/YouTubePlayer.py