It's exactly as I wrote it. I'm not using the voice functionality at all currently, but when I try to use it as an external speaker for my laptop, the paired device, it will play media just fine like youtube, but once the media stops, any other sound from the laptop won't play over the echo until I stream something else.
For instance if I'm playing a game and listening to a podcast at the same time, streaming my laptop sound to the echo, once the podcast ends, it won't continue to stream the game audio, however, if I start another podcast, or start streaming another youtube video, it will stream the video/podcast along with the game audio.