Hi Pablo,
Great question. Unfortunately our current release (of our plugin) does not have audio only parameter that you could use – in templates that is.
Having that said, if you do add the embedding code directly it should work just right since our JS SDK supports it.
The reason for this is that our current WordPress plugin is using v1 of our system, while v2 is the one that has audio only.
So if you add the following code into a page or post (anywhere where HTML can be added) it will work:
<ziggeorecorder ziggeo-onlyaudio></ziggeorecorder>
PS: We are close to finishing up the newer version of our plugin which is actually using v2 completely and which would support v2 audio only.
Hope this helps and of course please do let me know if you have any other questions I might be able to help with.
Regards,
Bane