If so, are you encountering the same disappointment that the audio files do not play on iOS devices?

Students are complaining that their audio feedback does not play for them.   It turns out, they are correct.  Audio does not work on iOS devices (both Safari and Chrome).   There are some reports that it is also not playing on Mac's, however this is not reproducible.

 

When the student views their feedback, the audio play-bar is greyed out and shows 00:00 playtime.   You cannot click (touch) the play controls.  

Anyone have the same experience?  Any workarounds?