Good afternoon. I developed a plasmoid and now want it to be able to be controlled from The now Playing widget. What do I need to do? Thanks.
Sorry for my bad English...

I believe to get support in the Now Playing widget, your plasmoid or application will need to add MPRIS support, which means it needs to expose a certain D-Bus interface as described in that spec.

It all started with my cousin asking what kind of songs I listen to, a simple question with simple answer. This is where the idea of Now Playing integration on my website came from upsers portal