I'm working on a game and our team has a sound guy. He handles nearly all aspects of the sound and I noticed how much easier it would be if he didn't have to go spelunking through the project files to find all the scenes that contain Audio nodes. This thought eventually materialized into this addon.
There's more information in the github README, but the basic idea is that you can search for scenes that contain nodes with a specific name or of a specific type.
Currently it's only for 3.5, as I haven't tested it in any other version. I'm going to make a 4.0 version eventually when our team switches over to it, but I'd be willing to make a 4.0 version earlier if there are people who would find it useful right now.
I would like to maintain the simplicity of the plugin, but I welcome feedback, suggestions, and improvements.