Previous to the most recent versions of 1.7 beta, Audioboom embeds worked well using the
whitelist function. They would just display the playable media embed.
However I’ve noticed that they now embed under the new ‘Onebox everything’ function differently - they just display the square post border and a link to the media like this:
Iframely shows that the media should be displaying the player (as it has previously done).
It’s possible that they’ve started doing something differently, but if this works in iframely, shouldn’t it work here?