How to use the command system

[NotAJocke]

I've read the documentation, I don't understand what to do with a Parameter.

I'm trying to update the manager's volume from another thread

Thanks in advance

[tesselode]

You can wrap handles in Arc<Mutex<_>> if you need to share them across threads. You don't necessarily need a Parameter; you can change the volume of the main mixer track (which will affect the volume of all audio) using AudioManager::main_track and TrackHandle::set_volume.