ide-track-3.mp3',
            '/static/music/guide-track-4.mp3'
        ];
        let currentTrackIndex = 0;
        
        // Format date for API (YYYY-MM-DDTHH:MM:SS)
        function formatDateForAPI(date) {
            const year = date.getFullYear();
            const month = String(date.getMonth() + 1).padStart(2, '0');
            const day = String(date.getDate()).padStart(2, '0');
            const hours = String(date.getHours()).padStart(2, '0');
            const minutes = String(date.getMinut