Hello, I am one of very few freelancers on this website capable of building Google Chrome extensions and can offer you my services in creating such. Unfortunately, none of my extensions can be shown to you as all of them were private software. The only reference I can provide is this link:
https://www.freelancer.com/projects/HTML.1-Javascript/Chrome-extension.6649951/
showing my successful Chrome project here.
Nevertheless, my skills allow me to satisfy all your needs: popup with new articles data, play sound, setting page, icon etc.
If interested, feel free to contact me for more details. Regards, Alexander