I have mentioned this before. In version 28, in Theater View, when I switch to the JRiver input on my Home Theater Receiver, it attempts to play the audio from the last item that was played (audio or video). When I stop this, and switch to another input and back to JRiver, it happens again. This has not happened with any previous versions.
Also, there are odd behaviors in the Interact Forum, when I try to use the search function, or even post a reply. I am filing this form out using JRiver 27, because of this oddity.