5. In that same control panel I see that MC is still the output playback device while youtube is playing and its picking up on the sound, as the volume bars are moving.
Your statements seem to be contradictory. MC is still the output device? There
was no MC output device before (your last screenshot confirmed this). How is it
still active if it didn't exist before? I think it is just a language barrier, but the many minor inconsistencies in this statement, and others above, are confusing and make it hard to follow. If you're not a native English speaker, I know it can be very difficult. Try your best.
The
JRiver Media Center 20 device you (now) see in the Windows Sound Control Panel is
MC's brand new WDM driver. This allows MC itself to act like a sound card, which lets MC process the audio from
other external applications through the regular JRiver audio engine (enabling you to use things like MC's DSPs for audio played in your web browser, games, and other applications).
It was only just included in versions released in the last few days. You didn't have it before, which is how I knew you weren't running the latest version.
Matt was telling you to turn it off. It
does not work when MC isn't running (at least in Library Server mode in the system tray). You'd turn it off by setting your DAC as the default audio device (the one with the green checkmark). For right now, you don't want this enabled, so make sure the one circled in the picture above is not enabled.
Can you tell me the setting under
Tools > Options > Startup > Run on Windows Startup.
Also, do this:
1. Make sure your web browser is
closed.
2. Ensure that MC's new WDM Driver is NOT set as the default device in Windows.
3. Try it again. Open MC, close MC completely.
4. Open your web browser and play a video in YouTube.
5. Take a screenshot of the Sound control panel while YouTube playing.
Then, if you can manage, look in the Windows Task Manager under Processes for a Media Center 20 process. On Windows 8, if MC is closed to the System Tray (in Library Server mode) it should be listed under Background Processes, and if it is running normally, it should be listed at the top under Apps. In older versions of Windows just switch to the Processes tab and sort by Name and look under "M".
If MC is really closed, it won't be listed at all. If MC is open (either in Library Server mode, or perhaps stuck) then it will be listed. That will be useful to know.
Also, I discovered recently that MC doesn't fully close if you:
1. Launch a Link from MC in a separate Web Browser
2. Then close MC.
As long as the web browser remains running, it keeps the Media Center 20.exe process running as well. So, that's why I had you close your browser first, and then close it, and then open the browser.