foundry-vtt-macro-stop-all-playlists.js

(function({fadeDuration=5000}={}) {
    function fadeOutPlaylist(playlist, fadeDuration) {
        if (!playlist.playing) return;
        let playingSound = playlist.sounds.filter(s => s.playing).find(_ => true).sound;
        if (!!!playingSound) return; // should not happen
        let currVol = playingSound.volume;
        let globalVol = game.settings.get("core", "globalPlaylistVolume");
        if (currVol == 0) return;
        playingSound.fade(0, { duration: fadeDuration, from: currVol})
        setTimeout(() => playlist.stopAll(), fadeDuration);
        return;
    }

    game.playlists.filter(p => p.playing).forEach(p => fadeOutPlaylist(p, fadeDuration));
    ui.notifications.info("Stopping all playlists");
    
})({fadeDuration: 5000});