LoadedTromboneTrack extension to support async audio loading

Context passed to LoadBackground callback

Track loader responsible for loading "base game customs". For example, tootmaker tracks or additional custom collections

Hook for intercepting base game track loading

TromboneTrack extension to indicate a track loaded from the local filesystem

TromboneTrack extension for drawing song graphs on the track select screen

Loaded track assets, disposed when a level ends

Tiers of custom track loader

LoadedTromboneTrack extension for pause/resume functionality

Context for pausing & resuming

TromboneTrack extension for preview clips

Current track loading progress

Represents a song graph

TromboneTrack extension to indicate sortability

Loaded audio clip & volume

Event fired to build collections

Public hooks to look up registered tracks

Event-based API for registering new tracks.

Event fired whenever track collections are reloaded.

Track collection interface

Represents a playable track