Represents a discrete audio track.
Internal state used to identify the if it is the first the the audio track is trying to load
Specifies how many channels the track contains. Only used by channel control plugin.
Used for visualization in a UI.
If this is set it means that the track is already enabled and added to the DOM.
Specifies the offset of the track relative to the master in seconds.
Source of the audio track. Also used as identifier.
Callback called when the current src fails to request a new one. This can be used to provide a new pre-signed url for example when the current url times out.