Firefox Nightly has a generic "media" icon in the Raven sidebar when playing any music, I want to change it. Is there any way I could do it?

My Firefox Nightly and Tauon Music Box (Flatpak) also have a generic "media" icon in the Raven sidebar. But not the Vivaldi Snapshot, it is Chromium according to Raven.

The code for the sound panel in raven seems to look for an icon by the name of the stream. Since it's Nightly and not AudioIPC Server or Firefox a matching icon can't be found. Adding a Nightly icon to the icon theme you use might be a solution.