message: Update PlaylistSoundConfig to 0.7.9
diff: /**
  * Playlist Sound Configuration Sheet
  - *
  - * @param sound - The sound object being configured
  + */
  +declare class PlaylistSoundConfig extends FormApplication<PlaylistSoundConfig.Data, Playlist.Sound> {
  + /**
  + * @param playlist - The Playlist entity within which the Sound is configured
  + * @param sound - An Object for the Playlist Sound data
  * @param options - Additional application rendering options
  */
  -declare class PlaylistSoundConfig extends FormApplication {
  - _updateObject(event?: Event, formData?: object): Promise<Playlist.Sound>;
  + constructor(playlist: PlaylistSoundConfig['playlist'], sound: Playlist.Sound, options: PlaylistSoundConfig.Options);
  +
  + playlist: Playlist;
  +
  + /**
  + * @override
  + */
  + static get defaultOptions(): PlaylistSoundConfig.Options;
  +
  + /**
  + * @override
  + */
  + get title(): string;
  +
  + /**
  + * @param options - (unused)
  + * @override
  + */
  + getData(options?: Application.RenderOptions): PlaylistSoundConfig.Data;
  +
  + /**
  + * @param event - (unused)
  + * @override
  + */
  + protected _updateObject(event: Event, formData: PlaylistSoundConfig.Data): Promise<Playlist>;
  +
  + /**
  + * @override
  + */
  + activateListeners(html: JQuery): void;
  +
  + /**
  + * Auto-populate the track name using the provided filename, if a name is not already set
  + */
  + protected _onSourceChange(event: Event): void;
  +}
  +
  +declare namespace PlaylistSoundConfig {
  + interface Data extends Duplicated<PlaylistSoundConfig['object']> {
  + lvolume: number;
  + }
  +
  + interface Options extends FormApplication.Options {
  + /**
  + * @defaultValue `'track-config'`
  + */
  + id: string;
  +
  + /**
  + * @defaultValue `'templates/playlist/edit-track.html'`
  + */
  + template: string;
  +
  + /**
  + * @defaultValue `360`
  + */
  + width: number;
  + }
  }
  