Sound availability in CAPTCHA

From original comment:

Posted by emsearcy on April 16, 2014 at 5:24pm new
(If this should be a separate issue, my apologies.)

An early comment said,

I was under the impression voice captcha reads out what the image captcha is? In this case, mollom should not be replacing the image captcha placeholder with the voice captcha player but should just fire the sound file alongside the image captcha?

The new accessibility patch (thankfully) avoids Flash and works better with GUI screen readers (e.g. VoiceOver), but many of our sight-impaired users are using text based browsers which lack the JS functionality to replace the image with the html5 "player". It may look nice to replace the image with the player, but is there not a way to have the sound file "alongside" the image without needing JS? Maybe have both visible initially and use JS to hide the audio one and then use the current click/switch functionality from there?