(forum editor note: question split from another thread)
I’m having the same problem with KA videos which are in French. We are running Linux Mint 20 and have tried to access the videos with Chrome, Firefox, and Opera. While the video portions work great, they have NO audio. We can download the videos and then play them on our computer using either VLC Media Player or celluloid. This is a BIG problem for us as we donate computers and a server which holds Kolibri to schools all over Haiti. The Math lessons are GREAT, but without audio, they’re of limited value. Please let me know if there is a solution to this problem.