Heyo, your Bluetooth volume app is fantastic! Quick FR though: is there a way to specify the app that gets autoplay? YouTube likes to be annoying and accept autoplay with no visible controls, and requires a force stop of the YouTube application.
Hm, I wonder if just having an "auto open app" would be enough, allowing the user to select their app of choice (play music, pocketcasts, whatever). Would be a simple enough Intent to fire off on your end.