OK, here we go:
example branch pluginhost-with-audioplayer
I invested some time to provide a clean example, but it might not be perfect 
Also documentation is poor…
My example’s current status is more sophisticated, but partially in experimental or ugly state.
I can publish it as soon as it is cleaner.
Additionally, it will only fully work with the revised multibus API.
It will be including a multifile player with audio thumbnails and a recorder.