nc8000
Headphoneus Supremus
That's what I've tried to do, numerous times.
Just to confirm the stages;
1. enable app in settings
2. reboot device
3. disable app in settings
4. profit
Anything I'm forgetting?
You have to have an option enabled in the app when you disable the app, but other than that your steps are what I did (mind you I have not rebooted in nearly a year so there might be something I'm forgetting)