title: music visualization with webgl and three.js
body: <p>Can you help me?  I try to make music visualization <a href="http://webmaster9.ru/freelance/mysicusa/" rel="nofollow">http://webmaster9.ru/freelance/mysicusa/</a> it based on <a href="http://iacopoapps.appspot.com/hopalongwebgl/" rel="nofollow">http://iacopoapps.appspot.com/hopalongwebgl/</a>
   I have signal (level of music) but cant change visual effects according music. It use </p>
  
  <pre class="lang-js prettyprint-override"><code>var materials = new THREE.ParticleBasicMaterial( { size: (3 ), map: sprite1, blending: THREE.AdditiveBlending, depthTest: false, transparent : true } );
  materials.color.setHSV(hueValues[s], DEF_SATURATION, DEF_BRIGHTNESS);
  
  var particles = new THREE.ParticleSystem( geometry, materials );
  particles.myMaterial = materials;
  </code></pre>
  
  <p>1 Can I change  opacity or brightness according music?  Probably using controls? can you show me examples?<br>
  2 Can I change  texture according music?<br>
  2 Can I add light and change light   according music? 
  Thank you</p>