Audio Tag is not selectable or editable

Good question, the audio element is quite particular so it'd definitely require a custom component, probably following the ComponentVideo (and its custom view) For sure you could add it by yourself but I think it might be good handling it already in the core, so PRs are welcome :)

@artf can you give an easy snippet that shows a normal working demo of audio element cuz I tried to define custom component type for audio element but it does not seems to work and it is either not selectable or editable