Working fine on Safari 13.1 on my mac.
That's interesting. For Safari (13.1) and Firefox for me, the translucent box below 'Sounds of the Bodlean Library' appears entirely empty. However clicking randomly in it will invoke the location selection drop-down.
And perfectly on Firefox 75 on Linux.
not working on mac chrome or safari, so british and such a waste of time.
Firefox 75 on Mac works fine for me.
Chrome - oh look - a 'Play' button