Audio not playing in ios safari

Testing demo version of Hype; loving it so far. Have button that cheerfully launches audio on a mouse click (tap) action in Chrome on iPad (iPad Air 8.3); nothing happens in Safari when the same button is tapped. FYI, have mp3, ogg and wav variants for audio clip stored to resources and attached to button. Um. Why?

Can you provide a link to your content (and/or a zip of the .hype file)?
Also, perhaps obvious, make sure the audio is on and volume turned up! (I know some apps respond differently)

My bad. Apparently, I did not match up the .mp3 and .ogg filenames, though the clips were identical. IOS/Chrome could handle this; IOS/Safari could not. Fixed.