Missed a closing of the settings pane

Thanks everyone for your feedback! I've improved the new AddOn by adding the possibility to change the two "names" who are searched within the YouTube player for the audio track node and the audio to select. This should solve the issues some of you have found. My guess is that the naming of the settings are also translated now, therefore the AddOn did not work for those without the english interface.
Now simply click on the AddOn Icon and there you can change the name according to your player interface.