"Torg, did you understand?"
I got options for both bIyaj'a' and biyaj'a'. That is, the only difference was the capitalization of the I. I took a screenshot. https://www.dropbox.com/s/riivjx7pqakbo31/Screenshot_20180407-092601.jpg?dl=0
Ah yes. I've seen that sort of thing before.
The tiles are picked automatically -- we don't have control over those. The ones the system doesn't expect you to pick may have odd capitalisation, e.g. all lowercase.
I think that the system currently ignores case (unfortunately), so if you pick the biyaj'a' one, it will probably accept it as well.
Thank you for the screenshot, though! That may be helpful if I collect more of them to pass on as examples of this issue for the Klingon course.
That's what we thought too. If you want to read about the other known issues in this course, read the post at: https://forum.duolingo.com/comment/26778885
The Contributors and Moderators would love to add audio and Duolingo is supposed to be working on a method that might allow us to do it, but at this time, we do not know when or if it will be added.
There is a Skill a little bit into the course which teaches the names of the Klingon letters and has a description of the pronunciations in the Tips & Notes, however, that skill also lacks audio. If you want to check out some ideas for learning the pronunciation, check out the thread at: https://forum.duolingo.com/comment/26605745
And finally, the only way I know of to complain to the administration about the lack of audio on this course is to file a bug report: https://support.duolingo.com/hc/en-us/articles/204728264-How-do-I-report-a-bug-