.isPlaying = false;
                    this.updateUI();
                }
            }
            
            pause() {
                this.audio.pause();
                this.isPlaying = false;
                this.updateUI();
            }
            
            setVolume(volume) {
                this.audio.volume = volume;
                document.getElementById('volume-display').textContent = `${Math.round(volume * 100)}%`;
            }
            
            updateUI() {
                cons